Showing posts sorted by relevance for query reliable but fallible Alvin. Sort by date Show all posts
Showing posts sorted by relevance for query reliable but fallible Alvin. Sort by date Show all posts

Friday, July 15, 2011

Plantinga's Evolutionary Argument Against Naturalism

One of the primary doctrines of traditional theism is that God created human beings in His image. And if God is pure Mind, that suggests that it is primarily in the human mind that we see that divine image.

That's Thomas Aquinas's teaching. "Since human beings are said to be in the image of God in virtue of their having a nature that includes an intellect, such a nature is most in the image of God in virtue of being most able to imitate God" (ST, I, q. 93, a. 4). "Only in rational creatures is there found a likeness of God which counts as an image. . . . As far as a likeness of the divine nature is concerned, rational creatures seem somehow to attain a representation of that type in virtue of imitating God not only in this, that he is and lives, but especially in this, that he understands" (I, q. 93, a. 6).

One of the best arguments for theism is that this theistic doctrine of the human mind as created by God in His image provides the necessary support for the validity of human thought, including the validity of modern science. If we embrace Naturalism--the view that nothing exists except Nature, and so there is no God or nothing like God--we are caught in self-contradiction: if human thought originated not from a divine Mind but from the irrational causes of Nature, then we cannot trust our minds as reliable, and thus we cannot trust our belief in Naturalism. Naturalism destroys itself by destroying the rationality of believing in Naturalism, or anything else. Insofar as science--including evolutionary science--depends on the validity of human thought, and insofar as theism is the indispensable support for trusting in the validity of human thought, science is not only compatible with theism, science depends upon theism.

When I was a college freshman, I first learned this argument from reading C. S. Lewis's book Miracles, and it impressed me as one of the most powerful arguments for theism. 25 years later, as a college professor, I heard Alvin Plantinga present a more sophisticated version of the same argument when he gave a seminar presentation at my university on his paper "Naturalism Defeated."

I agree with Lewis and Plantinga that theistic religion and evolutionary science are compatible, because while science requires a methodological naturalism, it does not require the metaphysical naturalism that denies theism. I also agree with them that the theistic belief in the divine creation of the human mind can support our confidence in scientific reasoning, including evolutionary reasoning. But I disagree with their claim that evolutionary science is self-contradictory or incoherent without theism.

Plantinga has presented his argument in various writings, including the paper "Naturalism Defeated." A short summary of the argument is in the Introduction to Naturalism Defeated?: Essays on Plantinga's Evolutionary Argument against Naturalism, edited by James Beilby (Cornell University Press, 2002), which includes critiques of the argument by various authors and Plantinga's reply to the critiques. One of the best critiques in this volume is Evan Fales, "Darwin's Doubt, Calvin's Calvary." Plantinga's argument also comes up in his debate with Daniel Dennett in their recent book Science and Religion: Are They Compatible? (Oxford University Press, 2011).

Without going into all the technical details that are so dear to the hearts of analytic philosophers, here's the core of the argument in four steps.

(1) If we understand naturalism as the belief that there is no God--no supernatural Mind outside of Nature that created Nature--and if the naturalist is also a Darwinian who believes that evolutionary science explains the origins of all life, including human life, then the Darwinian naturalist must believe that the mental faculties of human beings originated through evolution by natural selection favoring those random mutations that were adaptive for survival and reproduction.

(2) Natural selection rewards adaptive behavior and punishes maladaptive behavior. But natural selection does not care about the truth or falsity of an animal's beliefs. If beliefs produce adaptive behavior, they will be rewarded by natural selection regardless of whether the beliefs are true or false. Therefore, the evolution of adaptive behavior in our prehistoric ancestors did not guarantee or make it probable that our cognitive faculties would be reliable in generating mostly true beliefs.

(3) From this it follows that the Darwinian naturalist has no good reason to trust his cognitive faculties as reliable. But then it follows that the Darwinian naturalist has no good reason to feel confident that his belief in naturalism is true. Consequently, Darwinian naturalism is self-defeating in that it contradicts itself.

(4) Darwinian science--and science generally--can escape this self-defeating position by rejecting naturalism and accepting theism, because theism believes that our human minds were created by God in His image such that we can understand the intelligible world He has created, and therefore we can be confident in the reliability of our divinely created cognitive faculties. This is compatible with evolutionary science, because we can assume that God has guided the evolutionary process, perhaps by causing those random mutations that He foresaw as facilitating the evolution of the human mind in its capacity for correctly understanding the world. This is also necessary for evolutionary science because it supports our confidence in the validity of human reason and escapes the incoherence of naturalism.

Like Lewis, Plantinga is a theistic evolutionist. He accepts the truth of Darwinian evolutionary science, because he believes that God could have used the evolutionary process to carry out his creative plan, which required miraculous acts by God to guide the evolutionary process towards human beings as having minds manifesting the intellectual image of God.

Dennett and other critics of Plantinga have objected that science requires naturalism, because in all scientific inquiry, the scientist must assume that everything can be explained by natural regularities or laws that are never broken by miraculous events. Otherwise, every regularity or law of science would have to be stated with the qualification unless God performs a miracle and suspends His laws. Such arbitrariness in the order of nature would make natural science impossible. Indeed, the very idea of nature as the stable order of the universe would be denied by the thought that everything is the momentary product of God's arbitrary will.

Plantinga's response is to argue that natural science requires methodological naturalism, but not metaphysical naturalism. Metaphysical naturalism denies that there is any divine reality beyond nature, and that's the naturalism that renders evolutionary science self-defeating. But methodological naturalism is the assumption that we can explain everything in purely natural terms without invoking anything supernatural. The theist can accept this, because the theist assumes that God has created the order of nature and that He will not interrupt that order arbitrarily. Although miracles are possible, the natural scientist does not normally have to be open to miraculous events in the practice of science. This combination of methodological naturalism and theistic belief in the miraculous power of God is what Plantinga calls "Augustinian science"--the sort of science that Augustine would endorse.

While I agree that theism and evolution can be compatible, I don't agree that theism is absolutely necessary for evolutionary science, because I don't agree that combining Darwinism with metaphysical naturalism creates an incoherent position.

The weak link in Plantinga's argument for metaphysical naturalism as self-defeating is step 2, where he assumes that adaptive behavior is completely unrelated to true belief. The evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible. The mental abilities of animals, including human beings, are fallible because evolution produces adaptations that are good enough but not perfect, and this results in the mental fallibility that is familiar to us.

But despite this fallibility, the mental faculties cannot be absolutely unreliable. Even Plantinga concedes (in his debate with Dennett) that in the evolution of animals, "adaptive behavior requires accurate indicators" (70). So, for example, a frog must have sensory equipment that allows him to accurately detect flies so that he can catch them with his tongue. Similarly, the immune system of the human body must accurately indicate the presence of foreign bodies and then accurately devise responses to destroy the invaders. But then Plantinga argues that these accurate indicators don't require true beliefs. It's not clear that the frog has any beliefs. And the human being is probably not even aware of what the immune system is doing exactly.

What this shows, of course, is that much of an animal's adaptive behavior through mental activity does not require conscious reasoning at all. But for those animals who do develop some capacity for conscious reasoning--and most preeminently human beings--the accuracy of this conscious reasoning will be important for adaptation. As Evan Fales argues in response to Plantinga, the highest mental capacities of human beings are so biologically expensive in terms of the investment of energy they consume that it is implausible that evolution would have produced them unless they improved the ability of human beings to track the truth about themselves and their environment. Again, this is going to be fallible, but it's implausible that human beings could be naturally evolved for being in a state of complete and perpetual delusion.

And yet that's exactly what Plantinga asks us to imagine--that we could have been naturally evolved for a state of complete and perpetual delusion. Having taken this step of radical Cartesian skepticism, he then tells us that the only escape from such skepticism is to assume that God would never allow this to happen. But as always is the case for the Cartesian skeptic, this all depends on imagining scenarios that are utterly implausible and unsupported by even a shred of evidence.

Only those who find Cartesian skepticism plausible will find Plantinga's argument plausible.  Indeed, Plantinga's argument originated with Descartes.

For example, consider this possibility for human evolution suggested by Plantinga:

So suppose Paul is a prehistoric hominid; a hungry tiger approaches. Fleeing is perhaps the most appropriate behavior: . . . this behavior could be produced by a large number of different belief-desire pairs. . . .

Perhaps Paul very much likes the idea of being eaten, but when he sees a tiger, always runs off looking for a better prospect, because he thinks it unlikely that the tiger he sees will eat him. This will get his body parts in the right place so far as survival is concerned, without involving much by way of true belief. . . . Or perhaps he thinks the tiger is a large, friendly, cuddly pussycat and wants to pet it, but he also believes that the best way to pet it is to run away from it. . . . or perhaps he thinks the tiger is a regularly recurring illusion, and, hoping to keep his weight down, has formed the resolution to run a mile at top speed whenever presented with such an illusion; or perhaps he thinks he is about to take part in a sixteen-hundred-meter race, wants to win, and believes the appearance of the tiger is the starting signal; or perhaps . . . . Clearly there are any number of belief-cum-desire systems that equally fit a given bit of behavior.


Well, yes, these weird stories are all logically possible, as the philosophers like to say. But they are also utterly implausible, because there is no evidence that anything like this could have happened in human evolution. Plantinga's claim that there is no clear connection between adaptive behavior and true beliefs in evolutionary history depends on fantasies of his imagination unsupported by evidence. He has to do that, because if he actually looked at the evidence of human evolutionary history bearing upon the emergence of human mental faculties, he would be faced with evidence for the evolution of human cognitive capacities for exploring the world that are generally reliable, even if fallible.

He would also see evidence that human beings can use their fallible mental capacities to correct their mistakes. After all, the very capacity to recognize our fallibility presupposes our skill for reliable reasoning about ourselves and our world. There are good reasons to believe that this can be explained as an outcome of a natural evolutionary process in which divine intervention was not necessary.

Some related posts can be found here, here, here, and here.

One might also consider here the evidence that Michelangelo's Sistine Chapel's painting of "The Creation of Adam" reflects Michelangelo's knowledge of the neuroanatomy of the brain.

Does this support Plantinga's argument? Or does it suggest that what we see as the "image of God" in the human brain is a purely natural product?

Tuesday, May 14, 2019

Bees Know Nothing: The Evolutionary Psychology of Zero and Plantinga's Evolutionary Argument Against Naturalism




                             Alvin Plantinga's Evolutionary Argument Against Naturalism

I have written some posts answering Plantinga's evolutionary argument against naturalism (here and here).  Plantinga claims that the theistic doctrine of the human mind created by God in His image provides the necessary support for the validity of human thought, including the validity of natural science.  If we embrace Naturalism--the view that nothing exists except Nature, and so there is no God or nothing like God (like Plato's Idea of the Good)--we are caught in self-contradiction: if human thought originated not from a divine Mind but from the irrational causes of Nature, then we cannot trust our minds as reliable sources of true beliefs, and thus we cannot trust our belief in Naturalism as being true.  Naturalism thus destroys itself by destroying the rationality of believing in Naturalism, or anything else.  Insofar as science--including evolutionary science--depends on the validity of human thought, and insofar as theism is the indispensable support for trusting in the validity of human thought, science is not only compatible with theism, science depends upon theism.

As I have argued, the weak link in Plantinga's argument is his assumption that the evolutionary natural selection of the mind for adaptive behavior is completely unrelated to true beliefs.  He argues that natural selection rewards adaptive behavior and punishes maladaptive behavior.  But natural selection does not care about the truth or falsity of an animal's beliefs.  If beliefs produce adaptive behavior, they will be favored by natural selection regardless of whether the beliefs are true or false.  Therefore, he infers, the evolution of adaptive behavior in our prehistoric ancestors did not guarantee or even make it probable that our cognitive faculties would be reliable in generating mostly true beliefs.  For all we know, we could have naturally evolved for being in a state of complete and perpetual delusion.

Against this line of reasoning, I have argued that the evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible.  The mental abilities of animals, including human beings, are fallible because evolution produces mental adaptations that are good enough (for survival and reproduction) but not perfect, and this results in the mental fallibility that is familiar to us.  But despite this fallibility, the mental faculties of animals cannot be absolutely unreliable or delusional.

Plantinga concedes this point when he says that in the evolution of animals, "adaptive behavior requires accurate indicators."  So, for example, a frog must have sensory equipment that allows him to accurate detect flies so that he can catch them with his tongue.  A frog with a brain prone to put him into a completely delusional view of the world around him would not survive and reproduce.

Another good example of the adaptive value of "accurate indicators" is the waggle dance of honey bees.  The accuracy of the bee's waggle dance in communicating with other bees shows the capacity for natural evolution--even without any divine guidance--to produce animal cognition and communication that gives the animal an accurate--even if fallible--representation of the world as it pertains to the needs of the animal.

Last year, we saw another example of this from the honey bees when scientists published research showing that bees have some knowledge of arithmetic as even including the concept of zero, which is a difficult concept even for human beings as indicated by the fact that some human civilizations have not had the concept of zero as a number.  The difficulty of this concept should be clear: How can "nothing" be "something"?  How can the absence of quantity be quantifiable or countable?

The scientists testing bees for their number sense devised a simple but clever experimental procedure (Howard et al. 2018; Nieder 2018).







Two groups of 10 bees each were lured to a rotating screen with four panels showing different numbers of black shapes.  Half of the bees were rewarded with a sugar solution for flying to the display showing a greater number of items, while the other half were rewarded for flying to the display showing a lesser number of items.  The bees who were taught the "less than" rule were then tested with some panels having multiple items and others being blank.  Most of the bees flew to the blank panels, suggesting that they somehow understood that the blank panel was "less than" the panels with one or more shapes.  This seemed to show some understanding of the concept of zero.

Until about 50 years ago, scientists generally assumed that the capacity for counting was uniquely human.  But then experiments showed that crows and ravens could carry out simple numerical tasks.  And now there is plenty of evidence that many different species of animals have some number sense, although they do not have the human capacity for comprehending mathematical symbolism.

In humans and other primates, the core areas of the brain for processing numerical quantity are in the left and right parietal lobes and the left frontal lobe (Butterworth et al. 2017; Butterworth 2017).  The abnormal development of the parietal lobes is associated with dyscalculia, a congenital disability in learning about numbers and arithmetic (Butterworth et al. 2011).  Given the small size of the bee brain--about the size of a sesame seed--it is remarkable that bees have any capacity for counting at all.


That such a wide range of species have some number sense suggests that this is a case of convergent evolution of numerical capacity.  Different species that are very distant from one another phylogenetically have converged on the same adaptive solution to computational problems posed by their socioecological environments: being able to count the number of items in a set has been favored by natural selection because this mental capacity has enhanced the chances of survival and reproduction.

This, then, is another illustration of how the evolutionary adaptation of animal minds really does require "accurate indicators" of the world, and so Plantinga is wrong in assuming that a natural process of evolution unguided by the Mind of the Creator could never produce minds capable of generating true beliefs about the world.

But, still, the claim that bees understand the concept of zero is puzzling.  After all, doesn't the fact that the concept of zero has appeared only recently in some human civilizations suggest that conceptualizing numbers is a cultural invention rather than a purely biological activity, and that this depends on a uniquely human capacity for symbolic abstraction?

That will be the question for my next post.


REFERENCES

Butterworth, Brian, et al. 2011. "Dyscalculia: From Brain to Education." Science 332 (27 May): 1049-1053.

Butterworth, Brian, et al. 2017. "Introduction: The Origins of Numerical Abilities." Philosophical Transactions of the Royal Society B 373: 20160507.

Howard, Scarlett R., et al. 2018. "Numerical Ordering of Zero in Honey Bees." Science 360 (8 June): 1124-1126.

Nieder, Andreas. 2017. "Number Faculty Is Rooted in Our Biological Heritage." Trends in Cognitive Sciences 21 (June): 403-404.

Nieder, Andreas. 2018. "Honey Bees Zero in on the Empty Set." Science 360 (8 June): 1069-1071.

Tuesday, November 08, 2016

The Paleolithic Origin of Science and Philosophy in the Art of Tracking

This is a video from 2001 of Karoha Langwane, a /Gwi tracker from Lone Tree in the central Kalahari, Botswana, running an eight-hour-long persistence hunt of a kudu bull (a species of antelope), which requires the cognitive skill for tracking animals. Karoha might be one of the last traditional hunters practicing the persistence hunt--chasing the hunted animal in the mid-day sun for hours until it collapses from overheating and exhaustion--which was probably the earliest form of human hunting, going back two million years among our hominid ancestors. Louis Liebenberg has argued that the speculative tracking required for such hunting involves the hypothetico-deductive reasoning that underlies the cognitive abilities for science: our hunter-gatherer ancestors evolved an innate ability to use scientific reasoning when they interpreted tracks and signs and made testable predictions about animal behavior.


This is a video of Daniel Lieberman lecturing on "Brains, Brawn, and the Evolution of the Human Body."  Lieberman is a proponent of the "endurance running hypothesis"--the idea that our human bodies and brains are evolved for running long distances, because this was required for persistence hunting millions of years ago before the invention of hunting technology like bows and arrows.

The arguments here by Liebenberg and Lieberman help to resolve a paradox about human evolution first identified by Alfred Russel Wallace.  While Wallace was a co-discoverer along with Darwin of the theory of evolution by natural selection, Wallace disagreed with Darwin in that Wallace did not believe that natural selection could fully explain the evolution of human beings in their high moral and mental capacities.  In his essay on "The Limits of Natural Selection as Applied to Man," Wallace argued that the human brain was larger than it needed to be for survival as a primitive hunter-gatherer.  Natural selection, he observed, "has no power to produce absolute perfection but only relative perfection, no power to advance any being much beyond his fellow beings, but only so much beyond them as to enable it to survive them in the struggle for existence."  And yet human beings have mental powers for abstract thought, as expressed in art, science, mathematics, philosophy, and religion, that would not have been useful for the survival of our Paleolithic ancestors.  Such powers could not therefore have evolved by natural selection, because they would have been useless for the survival and reproduction of our prehistoric ancestors.

Wallace declared:
"The mental requirements of savages, and the faculties actually exercised by them, are very little above those of animals.  The higher feelings of pure morality and refined emotion, and the power of abstract reasoning and ideal conception, are useless to them, are rarely if ever manifested, and have no important relations to their habits, wants, desires, or well-being. They possess a mental organ beyond their needs.  Natural Selection could only have endowed savage man with a brain a little superior to that of an ape, whereas he actually possesses one very little inferior to that of a philosopher."
Since the evolution of such a brain could not be the work of natural selection, Wallace inferred, it must be the work of artificial selection by "some higher intelligence."  Just as human beings have artificially selected plants and animals to be bred for special traits, so this "higher intelligence" must have guided human evolution to achieve a high mental capacity.  Many readers assumed that this "higher intelligence" must be God.  But Wallace said this was a misconception, because this higher intelligence could be some kind of spiritual mind other than God.

Creationists and intelligent design theorists have seen Wallace as agreeing with their claim that natural science can see evidence of creative intelligence in the natural world, and particularly in the cognitive and moral capacities of the human mind that show evidence of supernatural design.

Similar to Wallace's argument is the argument of theistic evolutionists like C. S. Lewis and Alvin Plantinga that an evolutionary naturalism becomes self-refuting if it denies the supernatural origin of the human mind.  The reasoning is that the theistic doctrine of the human mind as created by God in His image provides the necessary support for the validity of human thought, including the validity of modern science.  If we embrace metaphysical naturalism--the view that nothing exists except nature, and so there is no God or nothing like God--we are caught in self-contradiction: if human thought originated not from a divine Mind but from the irrational causes of nature, then we cannot trust our minds as reliable, and thus we cannot trust our belief in naturalism, or anything else.  Insofar as science--including evolutionary science--depends on the validity of human thought, and insofar as theism is the indispensable support for trusting in the validity of human thought, science is not only compatible with theism, science depends upon theism.

In my posts on Plantinga's argument (here and here), I have pointed out that the weak link in Plantinga's reasoning for metaphysical naturalism as self-defeating is his assumption that adaptive behavior is completely unrelated to true belief. Plantinga asks us to imagine that we could have been naturally evolved for a state of complete and perpetual delusion.  Having taken this step of radical Cartesian skepticism, he then tells us--as Descartes did--that the only escape from such skepticism is to assume that God would never allow this to happen.  But as always is the case for the Cartesian skeptic, this all depends on imagining scenarios that are utterly implausible and unsupported by even a shred of evidence.  The evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible.  The mental abilities of animals, including human beings, are fallible because evolution produces adaptations that are good enough but not perfect, and this results in the mental fallibility that is familiar to us.

But despite this fallibility, the mental faculties cannot be absolutely unreliable or delusional.  Even Plantinga concedes that in the evolution of animals, "adaptive behavior requires accurate indicators."  So, for example, a frog must have sensory equipment that allows him to accurately detect flies so that he can catch them with his tongue.  And the honeybee waggle dance is a dramatic example of how evolution by natural selection favors adaptive behavior that tracks the truth about the world.

Similarly, evolution by natural selection has given human beings mental capacities that are reliable, even if fallible, in tracking the world.  If Liebenberg is right, the distinctively human mental capacities arose originally among prehistoric hunter-gatherers for the literal tracking of wild game, which created the capacity for the abstract hypothetical reasoning of modern science.

Archaeological evidence indicates that our hominid ancestors were hunting about two million years ago.  Without weapons such as bows and arrows, the only effective form of hunting was probably persistence hunting--chasing an animal during the hottest time of the day until it overheated and dropped from exhaustion.  Anatomical evidence indicates that human beings are the only primates that are designed for the endurance running required for persistence hunting. 

In easy tracking terrain, hunters could follow an animal's trail by looking for one sign after another. But in difficult terrain, the hunters had to imagine the likely route the animal might take so that they might reconstruct the animal's behavior and decide in advance where they might find signs.  This would require what Liebenberg calls "speculative tracking" that uses "hypothetico-deductive reasoning."  Based on their knowledge of animal behavior and of the physical environment, hunters had to interpret the visible signs of an animal's path in terms of some hypothesis as to how and where the animal was moving.

In modern science, the visible world is explained by a postulated invisible world.  So that, for example, physicists use particle colliders to create visible particle tracks that are explained by hypotheses about invisible structures (atoms and subatomic particles) and forces (such as gravity).  Similarly, ancient hunters tracking an antelope had to interpret visible tracks as signs to be explained by hypotheses about the invisible movements of the antelope.  This abstract mental capacity for hypothetical reasoning could evolve by natural selection because those hunters who were good at this were more likely to have antelope for dinner.

It has been observed, however, that only a few people in hunter-gatherer societies are successful at this, because only the most intelligent members of the society will have the capacity for such scientific reasoning.  Similarly, we know that only a few people--an Aristotle, an Isaac Newton, or an Albert Einstein--will have the intellectual capacity for the deepest scientific or philosophic inquiries.  And thus the philosophic or scientific life will be most fully expressed by only a few people, even though the capacity for philosophic and scientific reasoning is latent in evolved human nature.

This same capacity for imaginative, hypothetical reasoning that generates scientific and philosophic knowledge can also generate mythic fiction and superstition.  Knowledge is valuable, because if we can follow the tracks of the antelope, we find the antelope, and we can eat.  We can also derive some satisfaction in telling stories about the antelope deity, although we will never find it.


REFERENCES

Bramble, Dennis M., and Daniel Lieberman. 2004. "Endurance Running and the Evolution of Homo." Nature 432 (18 November): 345-52.

Conniff, Richard. 2008. "Yes, You Were Born to Run." Men's Health 23 (May): 132-39. Available online.

Liebenberg, Louis. 2013a. The Origin of Science: The Evolutionary Roots of Scientific Reasoning and its Implications for Citizen Science. Cape Town, South Africa: Cybertracker.org. Available online.

Liebenberg, Louis. 2013b. "Tracking Science: The Origin of Scientific Thinking in Our Paleolithic Ancestors." Skeptic Magazine 18, no. 3: 18-23. Available online.

Wallace, Alfred Russel Wallace. 1870. "The Limits of Natural Selection as Applied to Man." In Contributions to the Theory of Natural Selection: A Series of Essays. London: Macmillan.

Monday, December 26, 2016

C. S. Lewis's Natural Law of Lockean Liberalism

Did C. S. Lewis show how the ancient idea of natural law could support the modern idea of Lockean liberalism?

That he did indeed do that is the provocative claim made by Justin Buckley Dyer and Micah J. Watson in their book C. S. Lewis on Politics and the Natural Law (Cambridge University Press, 2016).  This is provocative because, as Dyer and Watson indicate, many of the Christians who have become devoted fans of Lewis's writing--and especially American evangelical Christians--will be disturbed by the thought that Lewis was a classical liberal who rejected theocracy as a form of tyranny, who believed that government should not have the power to legally enforce Christian morality, and who thought the only proper aim of government was to secure individual liberty from legal interference except when necessary to prevent harm to others.

I find their arguments largely persuasive.  But unlike Dyer and Watson, I don't share Lewis's scorn for modern science--and particularly Darwinian science--as subverting any conception of natural law.  On the contrary, as I have often argued on this blog, I see a tradition of natural law thinking--from Aristotle to Aquinas to Locke--resting on the biology of human nature that can be supported by a Darwinian science of human nature that sustains a Darwinian classical liberalism.

Lewis believed that our distinctly human capacity and propensity for making moral judgments--for judging what is good and bad, right and wrong--testifies to the existence of a universal moral law or natural law or what the Chinese called the Tao.  We disagree about how to apply this law to particular cases, but the mere fact that we can argue about this shows that we agree on some general principles of morality that are so universally held that they can be found in all human civilizations throughout history.  Lewis's Abolition of Man concludes with an Appendix that provides "illustrations of the Tao"--quotations from religious, philosophical, and legal texts around the world that are remarkably similar in the moral principles they affirm.  So, for example, the Old Testament commandment "Do not murder" (Exodus 20:13) can be found in many different texts.  Similarly, the Golden Rule--do unto others as you would have them do unto you--is recognized in all moral and religious traditions as a fundamental principle of the moral law.

The best explanation of this universal moral law, Lewis argues, comes from the fundamental doctrines of orthodox Christianity--particularly, Creation, Fall, and Human Nature, or "our created-yet-fallen human nature."  We were originally created by God in His Image as a Mind capable of grasping the moral law. But while we were originally created good, we used our free will to fall away from God through pride or disobedience, and our human nature became so corrupted or sinful that we could not perfectly follow the moral law that we could know by reason.  There is a natural moral law, but we fail to keep it. To keep it, we need to be redeemed by God's forgiveness.  Those who accept that divine forgiveness will have eternal happiness in Heaven with God.  Those who reject that divine forgiveness will have eternal punishment in Hell far from God.

Dyer and Watson assume that these Christian doctrines must be rejected by "post-Darwinian thought," because Darwinian materialism requires a materialist explanation of the origins of life that denies any conception of the universe as intelligently designed for some divine purpose.  According to the Darwinians, human life is meaningless because it has no natural purpose or telos.  To support this conclusion, Dyer and Watson quote from Richard Dawkins and his famous claim that Darwinian evolutionary theory made it possible to be "an intellectually fulfilled atheist" (18-20).

But this ignores the fact that Lewis was a theistic evolutionist (as I have indicated here).  Actually, Dyer and Watson acknowledge this in one passage: "To be clear, Lewis saw no conflict between reason and a biological theory that explains the progressive development of life on earth by means of natural selection. That theory, he allowed, may be proved more or less accurate by successive discoveries" (24-25).  But then they generally assume that Dawkins is correct in claiming that Darwinian science must be atheistic.  And thus they pass over in silence prominent theistic evolutionists like Francis Collins, whose Christian faith was much influenced by reading Lewis.

This also ignores the fact that Darwin himself employed the Thomistic idea of "dual causality" in claiming that an evolutionary science of "secondary causes" left open the possibility of "primary causes" in the divine creation of the laws of nature (see here and here).  Darwin thought that seeing God as the ultimate source of the moral law could reinforce the moral sense: "the conviction of the existence of an all-seeing Deity has had a potent influence on the advance of morality" (2004, 682).  And yet he also thought that people could obey the natural moral law even without seeing its divine source.  Dyer and Watson see Lewis as taking the same position: "One can recognize and practice elements of the natural law without acknowledging its ultimate source" in God (91).

Also, in denying that Darwinian science can be teleological, Dyer and Watson ignore the ways in which biological science must recognize immanent teleology (as opposed to cosmic teleology) in the goal-directed character of living beings (as indicated here).

Furthermore, Dyer and Watson fail to notice that what Lewis does in looking for anthropological evidence of the universal moral law as the Tao corresponds to what evolutionary moral psychologists have done (beginning with Darwin) in looking for the moral universals of evolved human nature.  In the Descent of Man, Darwin declared: "I fully subscribe to the judgment of those writers who maintain that of all the differences between man and the lower animals, the moral sense or conscience is by far the most important" (2004, 120).  And just as Lewis saw the Golden Rule as one of the finest expressions of this conscience, Darwin thought that the Golden Rule "lies at the foundation of morality" (151).  Collecting and analyzing the massive evidence for moral universals has been the work of many Darwinian moral psychologists, beginning with Edward Westermarck in The Origin and Development of the Moral Ideas (1906).

I am sure, however, that Dyer and Watson would object that while Lewis defends the universal moral law as an objective cosmic reality that human reason can grasp as true, Darwinian moral psychology must explain morality as rooted in subjective human emotions that have no cosmic truth.  After all, doesn't Darwin show the influence of emotivist philosophers--such as David Hume and Adam Smith--in grounding morality in moral sentiments rather than moral reason?

Moreover, Dyer and Watson agree with Lewis's argument that insofar as Darwinian science rests on a scientific naturalism that denies any supernatural origins for human reason, this science cannot assert anything to be true without falling into self-contradiction.  If human rationality is the product of an irrational process of evolution that has not been guided by the Divine Mind, then we have no good reason to trust that human rationality as valid.

Although at times Lewis sounds like a Kantian rationalist in claiming that moral imperatives are known by pure reason without any impulse of desire or passion, he adopts Aristotle's account of "practical reason," as opposed to "theoretical reason," in a way that suggests that he agrees with Aristotle that moral judgment requires a combination of reason and passion (see here and here)., which is the position taken by Darwin and the evolutionary moral psychologists.

"Thought by itself moves nothing," Aristotle declares in the Nicomachean Ethics, although reason can guide the desires that do move us.  Desires (orexis) always moves us, but thought never moves us without desire.  Deliberate choice by practical reasoning requires a conjunction of desire and reason into "desiring thought" or "thinking desire."  In his Rhetoric, Aristotle shows how the psychology of the moral emotions, working through social praise and blame, supports a natural moral sense.

Moreover, Lewis's "Illustrations of the Tao" in The Abolition of Man are illustrations of the universal moral psychology of the human species as animals naturally inclined to feel moral sentiments of approval and disapproval.

One can see this by noticing how selective Lewis is in his choice of illustrations.  For example, under the category of "the law of general beneficence," he quotes the Biblical injunction "Do not murder."  Why doesn't he also quote these commands of Moses to his soldiers fighting against the Mideanites--"Kill all the male children and kill all the women who have ever slept with a man; but spare the lives of the young girls who have never slept with a man, and keep them for yourselves" (Numbers 31:17-18)?  Doesn't Lewis quote the first passage because he knows it will elicit the reader's sympathetic approval, while he knows that the second passage (or other passages in the Bible that display brutal violence) would provoke moral emotions of disapproval?  Does this explain why the first belongs to "the Tao," but the second does not?  Lewis is passing the Bible through the moral filter of human moral sentiments so that he can correct the Bible's mistakes.

Similarly, when Lewis provides illustrations of the Tao that concern "Duties to Children and Posterity," he does not quote God's command to Abraham to sacrifice his son Isaac (Genesis 22).  Nor does Lewis quote from the Biblical story of how Jepthah sacrificed his daughter to God after God had given him victory over the Ammonites (Judges 11:30-40).  Such stories violate natural law, because they offend our moral emotions.

Evolutionary neuroscience has confirmed the importance of such moral emotions by showing that people with damage to certain emotional control centers of the brain are diminished in their moral judgment, or even totally lacking any moral sense (like psychopaths), not because of any defect in cognitive reasoning, but because they lack the moral emotions (like guilt, shame, indignation, and love).  Thus, neuroscience has refuted Kantian moral rationalism by showing that it is neurologically impossible (see here and here).

But then, Dyer and Watson argue, such evolutionary scientific research presumes that we can trust in the validity of human reasoning, but an evolutionary account of the origins of the human mind denies that such trust is justified, and thus such evolutionary science, like all purely naturalistic reasoning, is self-defeating unless we believe that the human mind has been created by a Divine Mind.  That's Lewis's famous argument from reason that has been elaborated by Alvin Plantinga. 

But as I have argued (here and here), this argument from reason originated with Rene Descartes, and its weakness is the implausibility of radical Cartesian skepticism.  The core of the argument moves in four steps.

(1) If we understand naturalism as the belief that there is no God--no supernatural Mind outside of Nature that created Nature--and if the naturalist is also a Darwinian who believes that evolutionary science explains the origins of all life, including human life, then the Darwinian naturalist must believe that the mental faculties of human beings originated through evolution by natural selection favoring those random mutations that were adaptive for survival and reproduction.

(2) Natural selection rewards adaptive behavior and punishes maladaptive behavior. But natural selection does not care about the truth or falsity of an animal's beliefs. If beliefs produce adaptive behavior, they will be rewarded by natural selection regardless of whether the beliefs are true or false. Therefore, the evolution of adaptive behavior in our prehistoric ancestors did not guarantee or make it probable that our cognitive faculties would be reliable in generating mostly true beliefs.

(3) From this it follows that the Darwinian naturalist has no good reason to trust his cognitive faculties as reliable. But then it follows that the Darwinian naturalist has no good reason to feel confident that his belief in naturalism is true. Consequently, Darwinian naturalism is self-defeating in that it contradicts itself.

(4) Darwinian science--and science generally--can escape this self-defeating position by rejecting naturalism and accepting theism, because theism believes that our human minds were created by God in His image such that we can understand the intelligible world He has created, and therefore we can be confident in the reliability of our divinely created cognitive faculties. This is compatible with evolutionary science, because we can assume that God has guided the evolutionary process, perhaps by causing those random mutations that He foresaw as facilitating the evolution of the human mind in its capacity for correctly understanding the world. This is also necessary for evolutionary science because it supports our confidence in the validity of human reason and escapes the incoherence of naturalism.

The weak link in Plantinga's argument for metaphysical naturalism as self-defeating is step 2, where he assumes that adaptive behavior is completely unrelated to true belief. The evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible. The mental abilities of animals, including human beings, are fallible because evolution produces adaptations that are good enough but not perfect, and this results in the mental fallibility that is familiar to us.

But despite this fallibility, the mental faculties cannot be absolutely unreliable, so that we might be in a state of utter delusion, as the Cartesian skeptic claims. Even Plantinga concedes (in his debate with Daniel Dennett) that in the evolution of animals, "adaptive behavior requires accurate indicators."  So, for example, a frog must have sensory equipment that allows him to accurately detect flies so that he can catch them with his tongue.

The waggle dance of honeybees is another dramatic example of how evolution by natural selection favors adaptive behavior that tracks the truth about the world.

This suggests that we can account for the natural evolution of reliable cognitive faculties without assuming a theistic explanation of human mental capacity as a product of divine creation in the image of God.

Even without attributing any conscious beliefs to honeybees, the remarkable accuracy of their waggle dance illustrates how natural evolution--even without divine guidance--can produce animal cognition and communication that shows an accurate representation of the world as related to the needs of the animal.

Or would Lewis and Plantinga argue that this can only be explained as the work of God--that the cognitive abilities of honeybees show that they have been created in the image of God--because otherwise we would have no reason to believe in the accuracy of their dance?

In my next post, I will take up the account of Lewis's Lockean Liberalism provided by Dyer and Watson.

Some of my other posts on Lewis are here, here, and here.

Monday, October 18, 2021

Divine Revelation in "The Last Duel"--The Book and the Movie

 

                                                         Movie Trailer for "The Last Duel" 


The new movie The Last Duel has had its first general theatre release this past weekend.  It is a historical drama based on a book with the same name by Eric Jager.  It's about the last legal trial by combat in France in 1386.    

The film stars Matt Damon as Jean de Carrouges, a knight who challenges Jacques Le Gris (played by Adam Driver) to a legal duel after Carrouges's wife, Marguerite (played by Jodie Comer), accuses Le Gris of raping her.  Ben Affleck stars as Count Pierre d'Alencon, the lord to whom Carrouges and Le Gris are pledged as vassals.  The Director is Ridley Scott.

In the Middle Ages, in legal cases where it was difficult for the courts to reach a decision, one of the parties in the dispute could challenge the other to a duel, in which God would intervene to allow the innocent party to kill the guilty party, who would be condemned to eternal damnation.  In this case, Carrouges was fighting as the champion of his wife, so that if he were killed, this would show God's judgment that both he and his wife were guilty of lying under oath, and Marguerite would be immediately stripped naked and burned at the stake.  Both of their souls would be eternally punished in Hell, while Le Gris's soul would win eternal reward in Heaven.

The screenplay for the movie was written by Damon, Affleck, and Nicole Holofcener.  The screenplay follows closely Jager's book The Last Duel: A True Story of Crime, Scandal, and Trial by Combat (2004).  Jager is a professor of English at UCLA who specializes in medieval literature.  Once he became fascinated by the story, he spent ten years researching and writing the book.  His research is meticulous, which required archival research in France and elsewhere.  Almost every detail in his book is supported by citations of his sources in the notes to the book.  But unlike most such works of historical scholarship, the book has such a vivid narrative style that it reads like a novel.

The movie is very good.  But as we often say, the book is better than the movie.  Most importantly, the book is better in provoking us to think about the religious beliefs that drive the drama of this story.  In at least one scene, however, where the movie's script follows the exact words of the book, the movie does force the audience to wonder about the religious beliefs of these people.

Here's how the book relates Le Gris's last words, after a long brutal fight in the enclosed field for judicial combat, just before Carrouges kills him:

"As the two men struggled, and the huge crowd watched the spectacle in fascinated horror, Carrouges began shouting at Le Gris.  His voice was muffled by his visor, but the nearest spectators could make out his words:

"'Confess!  Confess your crime!'"

"Le Gris shook his head even more violently, as if refusing to admit his guilt even as he resisted the knight's efforts to unlock his visor."

Finally, Carrouges broke the lock, and the visor sprang open, exposing Le Gris's face.

"Le Gris blinked at the light and at his enemy's visored face, which hovered just a few inches away."

"Carrouges drew his dagger, again shouting: 'Confess!'"

"Le Gris, pinned down by the relentless knight, shouted back, trying to make himself heard by all at the field:

"'In the name of God, and on the peril and damnation of my soul, I am innocent of the crime!'"

"'Then be you damned!' cried the knight" (178-79). 

Carrouges then plunged his dagger into Le Gris's throat and mouth up to his brain.

It is almost unbelievable that a man like Le Gris would have had the will and the strength to shout his sacred oath of innocence in these circumstances, because, according to the religious beliefs of the time, if he were really guilty, refusing to confess his guilt before he died would condemn his soul to eternal damnation.

Did Le Gris, Carrouges, and Marguerite really believe what they were professing about God's revelation of his eternal judgment of guilt and innocence?  Did God in fact miraculously intervene to give Carrouges the strength and skill to defeat Le Gris and thus show the innocence of Carrouges and Marguerite and Le Gris's guilt?  If God did this, how would anyone know this to be true?  Would it depend on whether we thought the evidence supported the case of Carrouges and Marguerite?  It was said that Carrouges was sick with a fever when he entered the combat, and Le Gris was healthier and stronger.  If so, does that suggest that only divine intervention could have given Carrouges the ability to prevail?

"Does he truly believe his innocence at the end?" Affleck said of Le Gris in an interview for the Los Angeles Times.  "They took the idea of damnation seriously.  They were very religious.  That was at the root of everything.  And that's one of the things we didn't focus as much on: They truly believed God would make happen whatever was the fair thing to happen, so it would be God's will.  And for him to have to invoke that at the moment of his death and to protest his innocence is interesting." 

If religious belief was "at the root of everything" in this story, then Jager's book really is better than the movie because the book says a lot about the religious beliefs in medieval France, even though Jager clearly suggests that he does not himself share those beliefs, and even though his historical narrative gives us reasons to believe that there was no Revelation of God's will in such a way as to resolve any of the moral and political problems of medieval France.


THE FAILURE OF REVELATION?

Jager draws our attention to the fact that in medieval Europe, there was no Revelation of God's truth to resolve the many conflicts in the religious communities.  By the fourteenth century, Christendom had faced the Muslim threat for more than six hundred years.  Ten years after surviving his duel, Carrouges was killed in 1396 while fighting in the Last Crusade against the Ottoman Turks in the city of Nicopolis, in present-day Bulgaria.  Both Christians and Muslims believed that they were defending the true Revelation against the infidels.  Either there was no Revelation, or there was, but it was not clear enough to settle this dispute.  

Christianity was even at war with itself over conflicting interpretations of Revelation.  From 1378 to 1417, Christendom was divided into warring camps led first by two rival popes (in Rome and Avignon) and then by three popes (with a third pope in Pisa).  Previously, in 1054, there was a split between Western Christianity and Eastern Christianity, which is today the separation of the Catholic Church from the Eastern Orthodox Churches.  And, of course, in the 16th century, the Protestant churches would split off.  

These disagreements over Revelation threw Medieval Christian societies into violent conflict.  For example, in 1339 the English invaded France, initiating what came to be known as the Hundred Years War, in which Carrouges and Le Gris fought on the side of France.  By 1378, the Roman pope was blessing England's war of conquest in France, while the Avignon pope was blessing the French against the English.  This led to many atrocities, such as the English raid on Brittany in 1380, during which the English attacked a convent, raping and torturing the nuns.

Jesus prayed to God that all believers would be as one, that they would come to complete unity, "so that the world may believe that you have sent me" (John 17:21).  It seems then that Christians could give witness to the truth of Revelation by showing their agreement about that Revelation.

But in fact Christians have never achieved that goal of Christian unity in their interpretation of Revelation.  Previously, I have written about the failure of Revelation to bring Christian unity in the debate over creation and evolution.  As I indicated, there are three possible explanations for this.  Either there has been no Revelation of God's teaching.  Or there has been a Revelation, but it is so obscure that it conveys no clear teaching.  Or there has been a clear Revelation of that teaching, but human beings have been so blinded by biased thinking that they cannot see it.


CAN WE KNOW THE TRUTH BY REASON ALONE?

If we cannot rely on God's Revelation of the truth, perhaps through a divine judgment revealed in a trial by combat, then we must rely on our human reason to search for the truth.  To decide whether Marguerite was telling the truth about Le Gris raping her, we must use our reason in examining the evidence to decide whether it is probable or not that she was telling the truth.

But can we trust reason without Revelation to lead us to the truth?  Some Christian philosophers like Alvin Plantinga would say no, because we must accept at least one revealed truth--that God has created the human mind in His image--if we are to trust our minds.  If we embrace Naturalism--the view that nothing exists except Nature, and so there is no God or nothing like God--we are caught in self-contradiction: if human thought originated not from a divine Mind but from the irrational causes of Nature, then we cannot trust our minds as reliable, and thus we cannot trust our belief in Naturalism. Naturalism destroys itself by destroying the rationality of believing in Naturalism, or anything else.

As I have previously argued, however, the weak link in Plantinga's argument for metaphysical naturalism as self-defeating is his assumption that adaptive behavior is completely unrelated to true belief. The evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible. The mental abilities of animals, including human beings, are fallible because evolution produces adaptations that are good enough but not perfect, and this results in the mental fallibility that is familiar to us.  But despite this fallibility, the mental faculties cannot be absolutely unreliable. Even Plantinga concedes (in his debate with Daniel Dennett) that in the evolution of animals, "adaptive behavior requires accurate indicators."

In the case of judging criminal guilt or innocence, we must rely on our evolved adaptations for detecting and punishing cheaters.  As Morris Hoffman has said, "evolution built us to punish cheaters."

But even if that evolved capacity for judgment in criminal cases is reliable, it is not infallible; and in a case like Marguerite's accusation of rape, there can be disagreement over what counts as the truth.  Le Gris's lawyer--Jean Le Coq--kept a private journal where he wrote out his thoughts about the case.  At one point, he wrote: "No one really knew the truth of the matter."

The movie is divided into three chapters, suggesting three different points of view.  The first chapter is entitled "The Truth According to Jean de Carrouges."  The second chapter is "The Truth According to Jacques Le Gris."  The third is "The Truth According to Marguerite de Carrouges."  So there was a different truth for each of these three people.  And yet, immediately after the title for the third chapter has faded from the movie screen, "The Truth" is flashed on the screen.  So the script writers want the audience to see that there really is only one truth, and it's Margarite's.  

This third chapter of the movie was written by Nicole Holofcener, who invented many details for her story that are not found in Jager's book, which allowed her to turn this into a modern "Me Too" story of how women suffer from the patriarchal oppression of men.  Actually, Damon and Affleck allowed Holofcener to push the entire movie towards this theme.

When Jager has been asked about the historical accuracy of Holofcener's writing, he has said that it is at least 75% accurate.  Most importantly, he agrees with her conclusion that the evidence in the case favors Marguerite's story as most likely true.

In his book, Jager makes four arguments for why we should be persuaded by Marguerite's accusations.  First, some people have suggested that even if she was raped, she might have been mistaken in identifying Le Gris as the rapist.  Marguerite had met Le Gris only once, a little over a year before the night of the rape.  So she may have had only a vague memory of what he looked like.  And if she did not have a clear view of the rapist's face, she might have mistakenly thought the rapist looked like Le Gris.  But as Jager observes, this is implausible.  Marguerite swore in court that two men were responsible for her rape, and that she had a clear view of both men.  She said that Adam Louvel--a friend of Le Gris--helped Le Gris in holding her down on her bed, while Le Gris raped her.  She also said that Louvel was the first one to appear at her door, and that he specifically mentioned Le Gris by name before Le Gris entered her room.  This makes it highly unlikely that she was mistaken in identifying both men.

Jager's second argument concerns the story that sometime after Carrouges won his duel, a man later confessed to being Marguerite's rapist, which vindicated Le Gris's innocence.  Jager points out the implausibility of this considering that Marguerite had accused two men as responsible for her rape.

Jager's third argument responds to the claim that Marguerite knowingly lied in accusing Le Gris, either because she was trying to cover up her adultery, or because Carrouges forced her to fabricate this lie to get vengeance against a man he hated.  This was the claim made by Le Gris in his testimony.  Jager notes the obvious problem with this:  if she was lying, why did she include Adam Louvel in her charges?  Why would she add to her burden of proof by including Louvel in her charges?  If either Louvel or Le Gris had a good alibi, that would deny her story.

Jager's fourth argument is his strongest.  It is hard to come up with any good motivation for Marguerite to lie given that she had very little to gain from this and everything to lose.  She knew that if it was decided that she was lying, she would be executed; and according to her religious beliefs, her soul would be condemned to eternal punishment by God.  Surely the risk of such punishment would have deterred her from falsely charging Le Gris with rape.

There is another complicating factor in this case that I have not yet mentioned.  Marguerite and Carrouges had tried without success for five years to conceive a child.  But when Marguerite and Carrouges appealed their case to the Parlement of Paris, she was pregnant.  She had told Carrouges that she was pregnant at the same time that she told him about the rape, four days after it had occurred on January 18, 1386.  Jager judges that the child was born sometime between early September, nine months after Carrouges had returned from fighting in Scotland, and the middle of October, nine months after the rape.  The duel occurred on December 29, 1386.

Had she been impregnated by Carrouges or by Le Gris?  According to medieval law, if Le Gris was the father, that would prove that he did not rape her, because Galen had taught that sexual intercourse could not cause a pregnancy unless the woman's "seed" was produced by her orgasm; and if she had an orgasm that showed that she was not raped because she had enjoyed the coitus.

Now we know that if a rapist impregnates his victim, that does not show that she felt sexual pleasure, because a woman's orgasm is not required for ovulation.  This should be known by common-sense experience as much as by science, since many women have been fertile without experiencing orgasm.

It seems unlikely, however, that Marguerite was impregnated by Le Gris only four days before she told Carrouges that she was pregnant.

For all of these reasons, we can conclude that it is highly probable that Marguerite was telling the truth about her being raped by Le Gris.  We can reach this conclusion by using our reason to examine the evidence and then to logically draw inferences from that evidence.  Even if this is not a demonstrative proof, it is a probable truth beyond a reasonable doubt.

We can do this by reason alone without any need to appeal to some Revelation of the truth by God through trial by battle or some other means.  We can see this, beginning in the early modern period of European history, as European legal systems shifted to relying on judges and juries to decide legal disputes, which provided an alternative to oaths, ordeals, combat, and other appeals to divine intervention.  Thus did the state take over the role first played by God.

Tuesday, August 24, 2021

Darwinian Conservatism Versus Metaphysical Conservatism: A Reply to Wiley, Price, and Sunshine

Conservatives need Charles Darwin.  

Explaining why that is so was the purpose of my article in the Fall 2010 issue of The Intercollegiate Review. My article was entitled "Darwinian Conservatism Versus Metaphysical Conservatism."  This was followed by John West's article criticizing my argument entitled "Darwin, Scientism, and the Misguided Quest for Darwinian Conservatism."  My article can be found online.  Some of the writing in this article came from blog posts herehere, and here.

Last week, the Theology Pugcast had a one-hour podcast discussion of my article.  The three discussants were C. R. Wiley (a pastor in Vancouver, Washington), Thomas Price (a professor at Gordon Conwell Theological Seminary), and Glenn Sunshine (Professor Emeritus of History at Central Connecticut State University).  (I am grateful to Clifford Bates for drawing my attention to this podcast.)

The three discussants reach a common conclusion: Arnhart is wrong because he disagrees with us.  They offer many assertions about how they are right, and I am wrong.  But they offer very little evidence or argumentation to prove their assertions.  Watch the video, if I am wrong, please correct me.  Notice how Price laughs at the beginning, as if it is ridiculous that anyone would disagree with them.

I will comment on nine points of disagreement.


1.  ARE THERE ANY DARWINIAN CONSERVATIVES?

Wiley begins by saying that he was shocked to see my article in The Intercollegiate Review, because while he generally agrees with the articles in IR, he disagrees fundamentally with my article.  When he saw the title of the article, he assumed it would criticize Darwinian Conservatism and support Metaphysical Conservatism; and so he was deeply disturbed to see that it actually defended Darwinian Conservatism.

At first, he seems to deny that there are any Darwinian conservatives, because after all conservatism must be anti-Darwinian.  But then he says that maybe there are some Darwinian conservatives, although he implies that they can't be real conservatives.

He is silent about my history of the incipient ideas of evolutionary conservatism beginning with David Hume, Adam Smith, and Edmund Burke, of how those ideas were picked up by Charles Darwin in his account of the evolution of morality, and of how those ideas were revived by conservatives like Friedrich Hayek and James Q. Wilson.

I set this empirical and evolutionary line of conservative thought against the transcendent and metaphysical conservatism of people like Russell Kirk and Richard Weaver.  Kirk said that the "first canon" of conservative thought was "belief that a divine intent rules society as well as conscience, forging an eternal chain of right and duty," and consequently "politics is the art of apprehending and applying the Justice which is above nature," which assumes "a transcendent moral order."  He connected this to "Burke's description of the state as a divinely ordained moral essence" and Burke's view of history as "the unfolding of Design."  According to Kirk, the primary enemy of this metaphysical conservatism was Darwinian science.  Similarly, Weaver insisted that a healthy cultural order required a "metaphysical dream of the world," so that people could imagine their cultural life as a "metaphysical community" fulfilling a cosmic purpose.  And like Kirk, Weaver worried that Darwin's theory of evolution denied this "metaphysical dream" of cosmic order by explaining human beings as products of a natural evolutionary process governed by material causes that were not directed to any cosmic purposes.

Against this metaphysical conservatism, Hayek objected to the "obscurantism" of a conservative attitude that rejected Darwin's theory of evolution as morally corrupting.  He elaborated his view of Burkean "Old Whig" liberalism as belonging to a British empiricist evolutionary tradition contrasted with a French rationalistic design tradition.  In the evolutionary tradition of Hume, Smith, and Burke, Hayek explained, "it was shown that an evident order which was not the product of a designing human intelligence need not therefore be ascribed to the design of a higher, supernatural intelligence, but that there was a third possibility--the emergence of order as the result of adaptive evolution."  Hayek suggested that Darwin's theory of biological evolution was derived from the theories of social evolution developed by the Scottish philosophers.

Notice that both sides of this debate appeal to Burke.  As I show in my article, one can see in Burke's writings the split between the metaphysical and evolutionary versions of conservatism.  On the one hand, Burke says that human morality must be grounded in a religious metaphysics of cosmic design; and he cites Plato's political theology of design (in Book 10 of Plato's Laws): the authority of human laws must be founded on a religious belief in cosmic moral order as part of a divinely designed universe in which the good are rewarded and the bad punished.  

On the other hand, Burke rejected Richard Price's religious metaphysics of history and the Christian Platonism of his moral philosophy.  Price argued against the moral naturalism of Hume and the Scottish moral sense philosophers, and he scorned the idea that morality was rooted in natural moral sentiments. He contended instead that moral knowledge was a rational activity of the mind in grasping the eternal and immutable metaphysical truths of God.  Against Price's metaphysical morality, Burke evoked those "natural feelings" and "moral sentiments" that show "the natural sense of right and wrong" and "the moral constitution of the heart" as the empirical foundation in human nature of moral experience.  Here he showed his agreement with the ideas of Hume and Smith, which would later be taken up by Darwin.

Early in his life, Burke had expressed his skepticism about metaphysical causes in his Philosophical Enquiry into the Origin of Our Ideas of the Sublime and Beautiful.  He had explained that in looking for the "efficient cause" of sublimity and beauty, he did not pretend to explain the "ultimate cause," because he was pursuing a purely empirical inquiry into sense experience:

"That great chain of causes, which linking one to another even to the throne of God himself, can never be unraveled by any inquiry of ours.  When we go but one step beyond the immediately sensible qualities of things, we go out of our depths.  All we do after, is but a faint struggle, that shows we are in an element which does not belong to us."

I assume that Wiley, Price, and Sunshine would say that I am completely wrong about this history of conservative thought as split between empirical evolutionary ideas of natural morality and transcendent metaphysical ideas of cosmic moral order.  But I can't be sure because they are silent about all of this.


2. TWO DIFFERENT METAPHYSICS?  THE PROBLEM OF ULTIMATE EXPLANATION

They do say a lot, however, in criticizing the title of my article.  "Darwinian Conservatism Versus Metaphysical Conservatism" implies that Darwinian conservatism is not metaphysical.  On the contrary, they say, my Darwinian naturalism is actually a metaphysics; and so the dispute here is between two different metaphysics.  This must be so because any fundamental view of reality must depend on some metaphysical first principles about the ultimate ground of all things.  A naturalistic metaphysics assumes that Nature is the ultimate ground of Being.  A theistic metaphysics assumes that God is the ultimate ground of Being. 

If we define metaphysics as the branch of philosophy concerned with the first principles of all things, then Darwinian naturalism might seem to be metaphysical.  But as I indicated in my article (pp. 22-23), I was using the word metaphysical in the sense of supernatural or transcendent, which is recognized in the Oxford English Dictionary, and in that sense Darwinian naturalism is not metaphysical.

Actually, I have argued that while Darwinian science, like all natural science, requires a methodological naturalism that allows for the possibility of a metaphysical theism, it does not require a metaphysical naturalism that denies metaphysical theism.  A methodological naturalism means that we must adopt as a methodological principle that all of our scientific explanations must be grounded in the laws of nature without any appeal to supernatural revelation.  But this methodological naturalism leaves open the possibility that as a matter of faith we might move beyond nature to nature's God as the First Cause of nature.  This is the basis for those scientists who have embraced theistic evolution or evolutionary creation--the idea that God created the Big Bang and the laws of nature that have allowed the evolutionary unfolding of cosmic history. 

In fact, Darwin himself was open to a theistic metaphysics, because as I have indicated in a previous post, he accepted the Thomistic principle of "dual causality" in distinguishing "secondary causes" from "primary causes." While God might by understood by faith as the First Cause of all things, the evolution of species occurred through the "secondary causes" of natural evolutionary laws, and consequently there was no need for God to miraculously intervene in nature to specially create each species.  Thus Darwin allowed for the theistic evolution that has been embraced by people like C. S. Lewis, Francis Collins, Deborah Haarsma, and Alvin Plantinga.  I have written about this in a previous post.

Darwin concluded--in both the Origin and Descent--that there was no necessary contradiction between his theory and religious belief. In the concluding chapter of the Origin, he declared: "I see no good reason why the views given in this volume should shock the religious feelings of any one." He quoted a remark by the Reverend Charles Kingsley: "it is just as noble a conception of the Deity to believe that He created a few original forms capable of self-development into other and needful forms, as to believe that He required a fresh act of creation to supply the voids caused by the action of His laws."

His famous last sentence of the book evoked the image of the Creator as First Cause, borrowing language that echoes the Biblical book of Genesis: "There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved."

This opens the possibility of a theistic evolution for those who seek a reconciliation of religious belief and evolutionary science.

At some times in his life, Darwin identified himself as a theist.  At other times, particularly in his later years, he identified himself as a skeptic or agnostic.  But he always insisted that he was not an atheist.  In any case, he never believed that the Genesis story of Creation in six days was to be taken literally.  I have written about some of this here and here.

Nevertheless, the critical point for my argument is that Darwin could explain the evolution of morality and social order as a purely natural process.  He recognized that while religious belief was often important in the cultural evolution of morality, this moral evolution could be understood as a matter of natural law without any necessary appeal to a supernatural revelation.

Wiley, Price, and Sunshine repeatedly say that this naturalistic explanation of moral evolution must fail because nature isn't self-explanatory without God.  Nature must have its transcendent source in God.  Ultimately, we must ask: Why is there anything at all?  The only possible answer, they say, is God.  But then, of course, we must ask: Why is there a God?  And why is He the way he is?

Here we face the problem of ultimate explanation: all explanation depends on some ultimate reality that is unexplained.  All explanation presupposes the observable order of the world as the final ground of explanation that cannot itself be explained.  To the question of why nature has the kind of order that it has, the only reasonable answer is that we must accept this as a brute fact of our experience.  That's just the way it is.

Why is there something rather than nothing?  Well, why not?  

There is nothing in our experience of the world that would make it likely, or even comprehensible, that something would have the power to create everything in the world out of nothing.  Indeed, we cannot even understand absolute nothingness, because we have no experience of absolute nothingness.  Therefore, if we are reasoning from our ordinary experience of the world, the existence of an omnipotent God who created everything out of nothing is highly improbable or even incomprehensible.

If we appeal to the existence of God as the ultimate cause of nature's order, we still cannot explain the ultimate cause of God.  Burke pointed to this problem in speaking of the futility of looking for the "ultimate cause."  It might seem very unlikely that a universe would exist uncaused, but it is just as unlikely that God would exist uncaused.  Since we have never directly observed God creating everything out of nothing, but every day we observe the causal regularities of nature, the existence of an uncaused nature is to the skeptical thinker far more probable than the existence of an uncaused God.

As Darwin said, "the mystery of the beginning of all things is insoluble by us."  Metaphysical conservatives like Wiley, Price, and Sunshine say the mystery is solved by believing in God as the Creator ex nihilo.  But that commits the fallacy of explaining a great mystery with an even greater mystery.

Moreover, it should be noted that the Bible never says that God created everything ex nihilo.  That "out of nothing" doctrine was imposed by some Christian theologians.  But the first two chapters of Genesis suggest that the Creator was working on some preexisting formless matter, which is not nothing!

Consequently, in our search for ultimate explanations, we must appeal either to nature (if we're a skeptic) or to God (if we're a believer) as the unexplained ground of all explanation.  Thus does the natural desire to understand lead us to this most fundamental of choices--nature or God, reason or revelation.

Darwin was a Socratic scientific philosopher who chose reason over revelation, but with the understanding that reason cannot refute revelation.

I have written many posts elaborating these points.  Some can be found herehereherehereherehere, here, and here.


3. DOES METAPHYSICAL CONSERVATISM INCLINE TOWARDS THEOCRACY?

At this point, we might wonder whether this metaphysical debate makes any difference for our moral and political life.  If I am right, it does make a difference, because metaphysical conservatism inclines towards theocracy.  Wiley, Price, and Sunshine object to this by saying that a theocratic (or God-centered) metaphysics does not necessarily dictate a theocratic politics.  "We're all in a theocratic reality," Price asserts.  But this need not dictate theocratic politics, Sunshine says, if we see that God is interested in human liberty.

In my article, I pointed to some examples of metaphysical conservatives who support theocracy.  I noted that the Intercollegiate Review had published an article by Remi Brague with the title "Are Non-Theocratic Regimes Possible?"  His answer to the question was "No."  He argued that moral and political order is impossible without the theocratic appeal to the law of God as the metaphysical standard for all human action.  

I also noted Dinesh D'Sousa's book The Enemy at Home: The Cultural Left and Its Responsibility for 9/11, in which he tried to persuade American conservatives that "conservatives must move closer to the traditional Muslims."  Traditional Muslims believe that America's liberal morality will destroy their religion and their way of life.  American conservatives, D'Souza insisted, should admit that the Muslims are right.  America really is morally corrupt.  American conservatives should join with fundamentalist Muslims in fighting against secular morality and fighting for theocratic morality.

Wiley, Price, and Sunshine are silent about D'Sousa's book.  But Wiley asserts that I have distorted Brague, because what he calls theocracy does not mean theocratic politics.  After all, Wiley observes, some conservatives like Doug Wilson have argued for "theocratic libertarianism."

This is a confusing use of the word "theocracy" that departs from the root meaning of the word.  The English word "theocracy" is a translation of the Greek word theocratia that was coined by Josephus as a term for ancient Israel as ruled by the Mosaic laws.  The Oxford English Dictionary defines "theocracy" as 

"A form of government in which God (or a deity) is recognized as the king or immediate ruler, and his laws are taken as the statute-book of the kingdom, these laws being usually administered by a priestly order as his ministers and agents; hence (loosely) a system of government by a sacerdotal order, claiming a divine commission; also, a state so governed: esp. applied to the commonwealth of Israel from the exodus to the election of Saul as king."

This doesn't look like libertarianism to me.  On the contrary, it looks more like the theocratic regime sought by conservative Catholic integralists who argue that politics must order the lives of citizens to direct them to the eternal salvation of their souls, and for this the temporal power of government must be subordinated to the spiritual power of the Church.  Some integralists point to the Sacramental Kingdom of St. Louis IX in medieval France as their model.  This is a Christian version of Israel under the Mosaic law or of Plato's theocratic city in the Laws. 

This suggests to me that deciding whether a G0d-centered metaphysics requires a theocratic political regime will depend upon whether one is looking to the God of the Old Testament or the God of the New Testament.  As I have indicated in a previous post, Roger Williams was expelled from the Massachusetts Bay Colony for denouncing the Puritan rule there as a theocracy enforcing Mosaic law that was contrary to the New Testament, where the Christian churches were voluntary associations that did not persecute heretics or unbelievers.  In Rhode Island, he established a political order that tolerated all religions and even atheists.  This showed how God-centered Christians could reject the theocratic God of the Old Testament and embrace the Lockean liberal principles of toleration and religious liberty suggested in the New Testament.  One can see this, for example, in the Christian Lockean liberalism of C. S. Lewis.


4.  IMMANENT TELEOLOGY VERSUS COSMIC TELEOLOGY

In a Lockean liberal society with religious liberty, where people will not be persecuted for heresy, blasphemy, or atheism, some people will be guided by a religiously-informed cosmic teleology, while others will be guided by the immanent teleology that is part of our evolved human nature.  Wiley, Price, and Sunshine say that evolutionary science cannot support any teleology.  Price says that I illicitly import formal and final causes into my reasoning.  But they assert this without responding to my argument that while the evolutionary explanation of morality cannot appeal to the cosmic teleology of the metaphysical conservatives, the evolutionary explanation does recognize the immanent teleology of living beings.  

Cosmic teleology is the metaphysical conception of all of nature as an organic whole in which all beings serve a cosmic purpose set by an intelligent designer or Creator.  By contrast, the immanent teleology of organic life is manifest in the goal-directed generation, structure, and activity of individual organisms.  Even if evolution by natural selection is not purposeful, it produces organic beings that are purposeful.  Plants and animals grow to maturity, and once grown, they act for ends set by the functional nature of the species.  Human beings act to satisfy the natural desires of their evolved human nature.

Darwin recognized the teleological character of his evolutionary science.  In an article in Nature, Asa Gray wrote: "let us recognize Darwin's great service to Natural Science in bringing back to it Teleology; so that instead of Morphology versus Teleology, we shall have Morphology wedded to Teleology."  In response to this, Darwin wrote to Gray (June 5, 1874): "What you say about Teleology pleases me especially and I do not think anyone else has ever noted that."  When Darwin read some of Aristotle's biological works, he saw that he and Aristotle were in agreement about biological teleology.  I have written about this.


5. DID DARWIN NATURALIZE GENOCIDE?

If Darwin has a teleology, Sunshine suggests, it must be an immoral teleology of survival of the fittest leading to genocide.  This must be so because Darwinian evolution is driven by competition within the species.  He quotes this passage from Darwin's Descent of Man:  "At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate and replace throughout the world the savage races" (1871, I:201; 2004 [Penguin ed.], 183).

When Sunshine says that evolution is all about competition within the species, he ignores Darwin's insistence that the evolution of human morality arises from human sociability and sympathy (Descent of Man, I:70-106; 2004, 120-151).  It is true, however, that Darwin recognized tribal conflict and group selection: "It is no argument against savage man being a social animal, that the tribes inhabiting adjacent districts are almost always at war with each other; for the social instincts never extend to all the individuals of the same species" (I.85; 2004, 132).  Darwin thought that one of the "chief causes of the low morality of savages" was "the confinement of sympathy to the same tribe" (I.97; 2004, 143).  

Nevertheless, Darwin looked forward to the cultural evolution of morality towards a universal humanitarian sympathy: "As man advances in civilization, and small tribes are united into larger communities, the simplest reason would tell each individual that he ought to extend his social instincts and sympathies to all the members of the same nation, though personally unknown to him.  This point being reached, there is only an artificial barrier to prevent his sympathies extending to the men of all nations and races" (I:100-101; 2004, 147).

This cultural evolution of morality allows us to recognize the immorality of tribal warfare, such as that endorsed by the Old Testament.  Moses said that Yahweh told him to wage holy war in which the captured enemy towns would be put under a "curse of destruction," so that "thou shalt save alive nothing that breatheth" (Deuteronomy 20:10-18).  So in the holy war against the Midianites, the soldiers of Israel killed all of the adult men, but they saved the women and children as captives.  When Moses saw this, he was enraged.  He ordered them: "So kill all the male children and kill all the women who have ever slept with a man; but spare the lives of the young girls who have never slept with a man, and keep them for yourselves" (Numbers 31:7-20).  Our evolved moral sense allows us to see the evil in such tribal brutality.

But then what should we say about the passage quoted by Sunshine, where Darwin speaks of the "civilized races" exterminating the "savage races"?  We should notice, first of all, that unlike Moses Darwin did not sanctify this as commanded by God.  We should also notice that Darwin was reporting what he had observed during his trip around the world on the Beagle, and that he recognized the evil in such tribal cruelty.  As I have noted in a post on this, Darwin condemned the Europeans who were exterminating the indigenous people of South America, Australia, and New Zealand.  Even if the Europeans were "a little superior in civilization" and superior in military power, Darwin observed, they were "inferior in every moral virtue."

Thus did Darwin show how an evolved moral sense could support his moral condemnation of European tribal brutality.


6.  WAS NIETZSCHE RIGHT ABOUT THE CHRISTIAN BASIS OF ALL MORALITY?

And yet Wiley, Price, and Sunshine say that Darwin failed to see that his morality was derived not from natural human evolution but from his Christian culture.  Although Darwin was not a Christian, he still held onto a Christian morality.  Even if he thought he was an atheist, he was a Christian in his moral practice.  Because if he had really been an atheist, who believed that there was no God to institute moral law by divine command, then he would have believed that "If God is dead, everything is permitted," and he would have become a murderous psychopath like Dostoevsky's Raskolnikov.  Wiley, Price, and Sunshine talk a lot about this point when they say that atheists like Richard Dawkins and Jurgen Habermas are actually "Christian atheists" insofar as they show the cultural influence of Christian morality.  

Wiley, Price, and Sunshine have picked up this idea from some remarks by Friedrich Nietzsche and Jordan Peterson's interpretation of those remarks.  They are very enamored of Peterson, and they say they want to have him appear in a Theology Pugcast podcast.

I have criticized this Nietzsche/Peterson/Dostoevsky idea that morality is impossible without the Christian belief in morality as created by Divine Command.  Some of my posts on this can be found herehere, and here.  On a related point, I have argued that the modern idea of universal human rights can be grounded in Darwinian biology without any need for religious beliefs (look herehere, and here).

In these posts, I have argued that Peterson's reasoning is silly.  The only reason we don't commit murder is because we believe that God commands us not to murder.  So if we believed that God was dead, we would commit murder.  Therefore, if we don't commit murder, our actions show that we are not atheists.  But then, eventually, as modern atheism becomes such a deeply felt belief that it becomes expressed in our actions--once we have consumed God's corpse, and there's nothing more to eat--we should expect that we will all become murderers.

If this were true, we would expect to see empirical historical evidence that religious belief is correlated with a low homicide rate, and declining religious belief is correlated with a high homicide rate.  But there is a lot of evidence for declining violence over the past centuries, with some of the steepest declines in the less religious countries. 

In fact, even Peterson cites Steven Pinker's Better Angels of Our Nature as supporting this conclusion: "The probability that a modern person, in a functional democratic country, will now kill or be killed is infinitesimally low compared to what it was in previous societies (and still is, in the unorganized and anarchic parts of the world)" (58).  Oddly, Peterson does not notice how this contradicts his prediction that the modern death of God must necessarily turn us all into murderous Raskolnikovs.

It's surprising to me that in all the commentary on Peterson that I have read, no one has pointed out this fundamental contradiction in his arguments.

Moreover, Peterson ignores all the problems with his Divine Command Theory of morality.  For example, what should a father do if God commands him to murder his son (Genesis 22)?  Is murder the right thing to do when God commands it?  Amazingly, even Thomas Aquinas says that murder is right if God commands it (ST, II-II, q. 64, a. 6, ad 1).  Would Wiley, Price, and Sunshine agree with this?


7.  DOES DARWIN REDUCE ALL HUMAN DESIRES TO SURVIVAL AND REPRODUCTION?

But having argued that a naturally evolved moral sense is a more reliable guide to morality than Divine Command, I know that Wiley, Price, and Sunshine would object by saying, as Wiley does, that Darwinian morality is crudely reductionist because the only moral ends are survival and reproduction.

Surely, however, survival and reproduction are important moral ends.  Whenever Moses has to give a reason for the people of Israel to obey his laws, he says that obeying the law will allow them to live and propagate themselves (Deuteronomy 4:1, 4:40, 5:29, 6:1-3, 24, 8:1, 11:8-9, 20, 22:7, 23:9-14, 25:15, 30:15-20).  The natural desires for life and parental care are human universals.  Do Wiley, Price, and Sunshine deny this?

Of course, survival and reproduction are only the minimal conditions of morality.  I argue that the natural desires for life and parental care are only two of 20 natural desires that constitute the natural standards for moral order.  Wiley, Price, and Sunshine are silent about this.


8.  PLANTINGA'S EVOLUTIONARY ARGUMENT AGAINST NATURALISM

In all of my responses here to Wiley, Price, and Sunshine, I have assumed the validity of Darwinian evolutionary science in explaining human nature and human morality.  But they say that Alvin Plantinga has proven that a purely naturalistic science cannot claim any rational validity unless it accepts a metaphysical theism. 

Plantinga argues that the theistic doctrine of the human mind as created by God in His image provides the necessary support for the validity of human thought, including the validity of modern science. If we embrace Naturalism--the view that nothing exists except Nature, and so there is no God or nothing like God--we are caught in self-contradiction: if human thought originated not from a divine Mind but from the irrational causes of Nature, then we cannot trust our minds as reliable, and thus we cannot trust our belief in Naturalism. Naturalism destroys itself by destroying the rationality of believing in Naturalism, or anything else. Insofar as science--including evolutionary science--depends on the validity of human thought, and insofar as theism is the indispensable support for trusting in the validity of human thought, science is not only compatible with theism, science depends upon theism.

Remarkably, however, Wiley, Price, and Sunshine invoke Plantinga's argument without even mentioning, much less answering, the powerful criticisms of that argument.  It's as though they think they need not concern themselves with the criticisms, because Plantinga agrees with them, and therefore he must be right.

The weak link in Plantinga's argument for metaphysical naturalism as self-defeating is his assumption that adaptive behavior is completely unrelated to true belief. The evidence of evolutionary history suggests that evolution produces cognitive faculties that are reliable but fallible. The mental abilities of animals, including human beings, are fallible because evolution produces adaptations that are good enough but not perfect, and this results in the mental fallibility that is familiar to us.

But despite this fallibility, the mental faculties cannot be absolutely unreliable. Even Plantinga concedes (in his debate with Daniel Dennett) that in the evolution of animals, "adaptive behavior requires accurate indicators."  So, for example, a frog must have sensory equipment that allows him to accurately detect flies so that he can catch them with his tongue. Similarly, the immune system of the human body must accurately indicate the presence of foreign bodies and then accurately devise responses to destroy the invaders. But then Plantinga argues that these accurate indicators don't require true beliefs. It's not clear that the frog has any beliefs. And the human being is probably not even aware of what the immune system is doing exactly.

What this shows, of course, is that much of an animal's adaptive behavior through mental activity does not require conscious reasoning at all. But for those animals who do develop some capacity for conscious reasoning--and most preeminently human beings--the accuracy of this conscious reasoning will be important for adaptation. The highest mental capacities of human beings are so biologically expensive in terms of the investment of energy they consume that it is implausible that evolution would have produced them unless they improved the ability of human beings to track the truth about themselves and their environment. Again, this is going to be fallible, but it's implausible that human beings could be naturally evolved for being in a state of complete and perpetual delusion.

And yet that's exactly what Plantinga asks us to imagine--that we could have been naturally evolved for a state of complete and perpetual delusion. Having taken this step of absurd Cartesian skepticism, he then tells us that the only escape from such skepticism is to assume that God would never allow this to happen. But as always is the case for the Cartesian skeptic, this all depends on imagining scenarios that are utterly implausible and unsupported by even a shred of evidence.

Only those who find Cartesian skepticism plausible will find Plantinga's argument plausible.  Indeed, Plantinga's argument originated with Descartes.

For example, consider this possibility for human evolution suggested by Plantinga:

So suppose Paul is a prehistoric hominid; a hungry tiger approaches. Fleeing is perhaps the most appropriate behavior: . . . this behavior could be produced by a large number of different belief-desire pairs. . . .

Perhaps Paul very much likes the idea of being eaten, but when he sees a tiger, always runs off looking for a better prospect, because he thinks it unlikely that the tiger he sees will eat him. This will get his body parts in the right place so far as survival is concerned, without involving much by way of true belief. . . . Or perhaps he thinks the tiger is a large, friendly, cuddly pussycat and wants to pet it, but he also believes that the best way to pet it is to run away from it. . . . or perhaps he thinks the tiger is a regularly recurring illusion, and, hoping to keep his weight down, has formed the resolution to run a mile at top speed whenever presented with such an illusion; or perhaps he thinks he is about to take part in a sixteen-hundred-meter race, wants to win, and believes the appearance of the tiger is the starting signal; or perhaps . . . . Clearly there are any number of belief-cum-desire systems that equally fit a given bit of behavior.

Sunshine quotes from this passage about Paul the prehistoric hominid as an example of Plantinga's profound insight.

Well, yes, these weird stories are all logically possible, as modern philosophers like to say. But they are also utterly implausible, because there is no evidence that anything like this could have happened in human evolution. Plantinga's claim that there is no clear connection between adaptive behavior and true beliefs in evolutionary history depends on fantasies of his imagination unsupported by evidence. He has to do that, because if he actually looked at the evidence of human evolutionary history bearing upon the emergence of human mental faculties, he would be faced with evidence for the evolution of human cognitive capacities for exploring the world that are generally reliable, even if fallible.

He would also see evidence that human beings can use their fallible mental capacities to correct their mistakes. After all, the very capacity to recognize our fallibility presupposes our skill for reliable reasoning about ourselves and our world. There are good reasons to believe that this can be explained as an outcome of a natural evolutionary process in which divine intervention was not necessary.

I have written about Plantinga's argument hereherehere, and here.


9.  SLAVERY, THE BIBLE, AND THE EVOLVED MORAL SENSE

One example of our evolved ability to use our fallible mental capacities to correct our moral mistakes is our ability to see that while slavery has been practiced for thousands of years, it has always been "a great crime," as Darwin called it (2004, 141-42).  And here using our evolved moral sense to correct our mistakes includes correcting the Bible's endorsement of slavery.  

I developed this argument in the last section of my Intercollegiate Review article.  Remarkably, however, Wiley began the Theology Pugcast podcast by saying that they would ignore this section of the article.  He offered no explanation for this except to say that I had "an ax to grind" in this section.

In this section of the article, I claimed that the contrast between metaphysical conservatism and evolutionary conservatism was illustrated in how they differ in their understanding of the moral debate over slavery.  Darwinian conservatism can recognize the immorality of slavery as contrary to our evolved moral sense.  Against this, my critics have argued that any moral condemnation of slavery must ultimately rest upon a religious metaphysics that sees slavery as contrary to God's law.

Hume, Smith, and Darwin saw slavery as a violation of the moral sentiments--particularly, those sentiments that enforce justice as reciprocity.  Slavery is a form of social parasitism, as can be seen in slavery among ants.  And since human slaves are not naturally adapted to their enslavement, they will resist their exploitation; and slaveholders will have to impose their rule over their slaves by force and fraud.  In the effort to justify slavery, slaveholders will espouse a fraudulent ideology of paternalism that claims that the slaves are naturally benefited by their enslavement.  Proslavery ideology in the American South asserted that black slaves were physically, morally, and intellectually inferior to whites in their biological nature, and so these black slaves were happier when they were enslaved to white masters.  One of the primary motivations for Darwin's writing of The Descent of Man was to refute this ideology of scientific racism by showing that all of the human races were members of the same human species with the same moral sense that condemned slavery as parasitic exploitation.

The critics of Darwinian conservatism have insisted, however, that a Darwinian account of morality cannot sustain a moral case against slavery, which requires a universal morality based upon the cosmic moral law of a religious metaphysics as taught by the Bible.  The problem with this reasoning is that the Bible supports slavery.

Metaphysical conservatives like Richard Weaver have admired the "older religiousness" in the American South before the Civil War, and they have recognized that part of the Southern religion was faith in the Bible as supporting slavery.  According to Weaver, slavery "is well recognized in the Old Testament, and it is not without endorsement in the New; indeed, a strict constructionism interpretation almost requires its defense."  Similarly, historian Mark Malvasi (writing in the conservative journal Modern Age) has seen the American South as the last bastion of the "Old Republic," which was founded on "a genuinely Christian slavery."

Malvasi identified the Reverend Frederick Ross's Slavery Ordained of God, published in 1857, as one of the best statements of the biblical justification for slavery.  Ross adhered to a divine command theory of morality.  Ross insisted that to look to natural standards of right and wrong independently of God's will was atheism.  (He condemned the "self-evident truths" of the Declaration of Independence as an expression of Thomas Jefferson's atheism.)  We know what is right and wrong only because, and to the extent that, we know whether God has declared it right or wrong.  And for this, we must turn to the Bible as God's revelation of His will.  Therefore, we cannot know whether slavery is right or wrong except by seeing what the Bible teaches about God's will as to slavery.

Ross noted that the Old Testament clearly endorsed slavery.  The ancient Israelites practiced it, and God commanded it.  Similarly, in the New Testament, the Christians accepted slavery as practiced by the ancient Romans.  Paul taught slaves to obey their masters, just as he taught children to obey their parents and wives to obey their husbands.

The dispute over the Bible's handling of the slavery issue divided the Christian churches in America before and during the Civil War.  Americans had looked to the Bible as the revelation of the sacred order of the universe that would resolve all moral disputes by the cosmic authority of God's law.  But in this greatest moral crisis in American history, the Bible failed to provide any clear answer in the dispute over slavery between North and South.  As Abraham Lincoln observed in his Second Inaugural Address, "Both read the same Bible, and pray to the same God; and each invokes His aid against the other."

In such a situation, human beings must appeal to some natural moral sense like that espoused by Hume, Smith, and Darwin.  Darwinian conservatives can explain this moral sense as rooted in evolved human nature and as shaped by moral sentiments, moral traditions, and practical judgments.  Unlike the metaphysical conservatives, who claim that all social order must conform to some supernatural order of intelligent design or divine creation, evolutionary conservatives see social order as the product of ordinary human experience as guided by nature, custom, and prudence.

That's why conservatives need Charles Darwin.

I have written about the debate over slavery and the Bible here and here.

I have invited Wiley, Price, and Sunshine to write a response to this post.  If they do so, I will be happy to post it here.