Tuesday, November 15, 2016
The Empirical Data for Human Progress through the Liberal Enlightenment
Human life today is better than it has ever been in human history, because we enjoy the benefits of two centuries of human progress through the Liberal Enlightenment. Our time is the best of all times that human beings have ever known.
And yet most human beings around the world deny this. As the above chart indicates, in surveys asking people whether the world is getter better, most people (94% in the United States, 96% in Great Britain and Germany) say no. Many of those Americans who believe everything is getting worse voted for Donald Trump, because he appealed to their fear that America and the whole world are in decline, and because he persuaded them that only the leadership of a strongman can save them.
This popular pessimism is contradicted by empirical data that shows more human progress in the past two hundred years than at any time in previous human history. For example, in public opinion surveys, most people around the world say that world poverty has been increasing. In the United States, only 8% of the people believe that over the last 30 years the proportion of the world population living in extreme poverty has decreased. But these 8% are correct.
In this chart, the top line shows the proportion of the world's population living in extreme poverty, defined as living on less than $2 a day (measured in international dollars according to prices of 2011), from 1820 to 1990. In 1820, 94% of the world's population lived in extreme poverty. In 1990, it was down to 52%. For the second line, poverty is defined as living on less than $1 a day. In 1820, 84% of the world's population lived in such poverty. In 1990, it was down to 24%. The shorter line to the right is based on World Bank data for 1980 to 2015 showing the level of poverty defined as living on less than $1.90 a day. In 1980, 44% of the world population was living in such severe poverty. By 2015, this was down to 9.6%. This shows a steady decrease in extreme poverty over the last two hundred years, with the decrease accelerating over the past 30 years. Moreover, economic historians have found evidence that for all of human history prior to about 1800 over 95% of human beings lived in such extreme poverty.
Perhaps the best place to find this kind of data is "Our World in Data" -- an online publication by Max Roser (an economist at Oxford University) that surveys the data on the development of human living conditions at a global scale. Most of the data is presented in visual charts and global maps that show historical trends across time.
This data shows that human life in general is better today in at least ten ways:
(1) There are more lives and longer lives.
(2) Life is healthier
(3) Life is richer and less impoverished.
(4) Life shows more equality of opportunity.
(5) Life is more peaceful.
(6) Life is freer.
(7) Family life is better.
(8) Life is more environmentally sustainable.
(9) Life is more enlightened.
(10) Life is more virtuous.
Relying largely on the data collected by Roser, I will be writing a series of blog posts presenting some of the evidence for these ten progressive trends as caused by the norms and institutions of the Liberal Enlightenment that promote increasing freedom, knowledge, and technology.
I can foresee, however, that most readers will not be convinced by this evidence. The reason for this is that the human mind has evolved cognitive biases that make it hard for us to believe that human life is improving and easy for us to feel worried and dissatisfied.
One such bias is what psychologists Daniel Kahneman and Amos Tversky call the "availability heuristic." The more memorable an event is, because it's horribly shocking, the more probable we think it is.
So, for example, when we see shocking reports about terrorist attacks, we assume that such attacks are highly probable, and so we become terrified. I remember a friend of mine in Manhattan, Kansas, telling me that when she first saw the television coverage of the 9/11 terrorist attacks in New York City and Washington, DC, she left her office, picked up her son at his elementary school, and returned home where she hugged him for hours. Of course, she knew intellectually that her son in Kansas was in no danger of being attacked by terrorists. But emotionally she felt as if her family was under attack. Many Americans and many people around the world felt the same way that day.
In fact, that's the whole aim of terrorists--to throw an entire community of people into a state of panic. After the killing of 14 people in a terrorist attack by radical Muslims in San Bernardino, California, in December of 2015, Trump proposed that all Muslims should be banned from entering the United States. But very few Muslims become terrorists. And the statistical possibility of being killed by a terrorist in the United States is extremely low. Ordinary homicide is more likely. But even homicidal violence in the United States has been declining since a peak in the early 1990s. Nevertheless, the reports of terrorist attacks have such a shocking impact on us that we are inclined to be thrown into a panic that distorts our judgment about what should be done to protect ourselves.
The great danger here is that if we do not recognize the human progress brought to us by liberal norms and institutions, we might become so fearful and angry that we will turn away from our liberal principles and embrace the illiberal rhetoric of a demagogue who promises to save us.
Although the human progress achieved by the Liberal Enlightenment is real, it is not inevitable, as should be clear from the catastrophic suffering brought into the middle of the 20th century by the illiberal regimes of Stalin, Hitler, and Mao. The recent resurgence of ethnic nationalism in its attack on liberal globalism suggests that this could happen again.