But he was intrigued by the fact that all immediate-return societies also spurned hierarchy, did not have chiefs, leaders, or institutional authority figures, and were intolerant of any meaningful material wealth differentials between individuals. He concluded that foragers’ attitudes to work were not purely a function of their confidence in the providence of their environment, but were also sustained by social norms and customs that ensured food and other material resources were evenly distributed. In other words, that no one was able to lord it over anyone else. And among them, one of the most important was “demand sharing.

Of these myriad new professions that emerged when people congregated in cities, two entirely new classes of work were especially important. The first was a by-product of the invention of writing, and the second of the emergence and increasing power of the merchants who controlled the allocation and distribution of energy and other resources procured from the countryside.

Over the course of the seventeenth and eighteenth centuries, the desire of poorer people in cities across Europe to consume what were once luxuries enjoyed only by the very rich was just as influential in shaping the history of work as the invention of technologies to exploit the energy in fossil fuels. Without it, there would have been no markets for mass-produced items, and without markets the factories would never have been built. It also rewrote the rules by which much of the economy operated. The growth of Britain’s economy increasingly came to depend on people employed in manufacturing and other industries reinvesting their wages in the very same products they and their factory workers manufactured.

He was also the first to realize that in the modern era most people went to work to make money rather than products, and that it was the factories themselves that made actual things.

Thus, while those who are very wealthy like to believe that they are worthy of the financial rewards they have accrued, many poorer people don’t want to mess with the dream that they too might achieve such riches if only they work hard enough. For them to concede that perhaps the system was stacked against them—that money had become far better at begetting more money than working long hard shifts—would be tantamount to abandoning their sense of agency and their cherished beliefs that what made their countries different was that anyone who worked hard enough could be whatever they wished to be.