The genesis of the modern world

Modern industrial civilization developed in countries with a large Protestant population -- mainly in England -- but is religion alone enough to explain why? There was certainly a long gap between the establishment of Protestantism in England (which stretched from Wycliffe in the 1300s to Elizabeth I in the 1500s) and the beginning of the industrial revolution in the late 1700s. I suspect that a combination of Protestantism with other factors -- such as the newly revealed one mentioned in the excerpts below -- made the difference

Gregory Clark, an economic historian at the University of California, Davis, believes that the Industrial Revolution - the surge in economic growth that occurred first in England around 1800 - occurred because of a change in the nature of the human population. The change was one in which people gradually developed the strange new behaviors required to make a modern economy work. The middle-class values of nonviolence, literacy, long working hours and a willingness to save emerged only recently in human history, Dr. Clark argues....

The Industrial Revolution, the first escape from the Malthusian trap, occurred when the efficiency of production at last accelerated, growing fast enough to outpace population growth and allow average incomes to rise. Many explanations have been offered for this spurt in efficiency, some economic and some political, but none is fully satisfactory, historians say.

Dr. Clark's first thought was that the population might have evolved greater resistance to disease. The idea came from Jared Diamond's book "Guns, Germs and Steel," which argues that Europeans were able to conquer other nations in part because of their greater immunity to disease. In support of the disease-resistance idea, cities like London were so filthy and disease ridden that a third of their populations died off every generation, and the losses were restored by immigrants from the countryside. That suggested to Dr. Clark that the surviving population of England might be the descendants of peasants.

A way to test the idea, he realized, was through analysis of ancient wills, which might reveal a connection between wealth and the number of progeny. The wills did that, but in quite the opposite direction to what he had expected. Generation after generation, the rich had more surviving children than the poor, his research showed. That meant there must have been constant downward social mobility as the poor failed to reproduce themselves and the progeny of the rich took over their occupations. "The modern population of the English is largely descended from the economic upper classes of the Middle Ages," he concluded.

As the progeny of the rich pervaded all levels of society, Dr. Clark considered, the behaviors that made for wealth could have spread with them. He has documented that several aspects of what might now be called middle-class values changed significantly from the days of hunter gatherer societies to 1800. Work hours increased, literacy and numeracy rose, and the level of interpersonal violence dropped.

Another significant change in behavior, Dr. Clark argues, was an increase in people's preference for saving over instant consumption, which he sees reflected in the steady decline in interest rates from 1200 to 1800. "Thrift, prudence, negotiation and hard work were becoming values for communities that previously had been spendthrift, impulsive, violent and leisure loving," Dr. Clark writes.

Around 1790, a steady upward trend in production efficiency first emerges in the English economy. It was this significant acceleration in the rate of productivity growth that at last made possible England's escape from the Malthusian trap and the emergence of the Industrial Revolution. It is puzzling that the Industrial Revolution did not occur first in the much larger populations of China or Japan. Dr. Clark has found data showing that their richer classes, the Samurai in Japan and the Qing dynasty in China, were surprisingly unfertile and so would have failed to generate the downward social mobility that spread production-oriented values in England.

What was being inherited, in his view, was not greater intelligence - being a hunter in a foraging society requires considerably greater skill than the repetitive actions of an agricultural laborer. Rather, it was "a repertoire of skills and dispositions that were very different from those of the pre-agrarian world." ...

Most historians have assumed that evolutionary change is too gradual to have affected human populations in the historical period. But geneticists, with information from the human genome now at their disposal, have begun to detect ever more recent instances of human evolutionary change like the spread of lactose tolerance in cattle-raising people of northern Europe just 5,000 years ago. A study in the current American Journal of Human Genetics finds evidence of natural selection at work in the population of Puerto Rico since 1513. So historians are likely to be more enthusiastic about the medieval economic data and elaborate time series that Dr. Clark has reconstructed than about his suggestion that people adapted to the Malthusian constraints of an agrarian society....

Dr. Bowles, the Santa Fe economist, said he was "not averse to the idea" that genetic transmission of capitalist values is important, but that the evidence for it was not yet there. "It's just that we don't have any idea what it is, and everything we look at ends up being awfully small," he said. Tests of most social behaviors show they are very weakly heritable. He also took issue with Dr. Clark's suggestion that the unwillingness to postpone consumption, called time preference by economists, had changed in people over the centuries. "If I were as poor as the people who take out payday loans, I might also have a high time preference," he said.

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