But we now know that hunter-gatherers like the Ju/’hoansi did not live constantly on the edge of starvation. Rather, they were usually well nourished; lived longer than people in most farming societies; rarely worked more than fifteen hours a week; and spent the bulk of their time at rest and leisure. We also know that they could do this because they did not routinely store food, cared little for accumulating wealth or status, and worked almost exclusively to meet only their short-term material needs. Where the economic problem insists that we are all cursed to live in the purgatory between our infinite desires and limited means, hunter-gatherers had few material desires, which could be satisfied with a few hours of effort. Their economic life was organized around the presumption of abundance rather than a preoccupation with scarcity. And this being so, there is good reason to believe that because our ancestors hunted and gathered for well over 95 percent of Homo sapiens’ 300,000-year-old history, the assumptions about human nature in the problem of scarcity and our attitudes to work have their roots in farming.

Foraging may be much less productive and generate far lower energy yields than farming but it is also much less risky. This is firstly because foragers tended to live well within the natural limits imposed by their environments rather than skate perpetually on its dangerous verges, and secondly because where subsistence farmers typically relied on one or two staple crops, foragers in even the bleakest environments relied on dozens of different food sources and so were usually able to adjust their diets to align with an ecosystem’s own dynamic responses to changing conditions. Typically, in complex ecosystems when weather one year proves unsuitable for one set of plant species, it almost inevitably suits others. But in farming societies when harvests fail as a result of, for example, a sustained drought, then catastrophe looms.

Where foragers stoically accepted occasional hardships, farmers persuaded themselves that things could always be better if they worked a little harder. Farmers who put in the extra hours would, over time, usually do better than lazier ones who only ever made contingency for the one or two risks they considered to be the most likely. Thus among the Ju/’hoansi’s farming neighbors along the Kavango River the wealthiest ones were usually the most risk-averse—those who worked hardest to build good enclosures to protect their cattle and goats from predators at night; who spent long summer days diligently chasing birds, monkeys, and others drawn to their fields; who planted their seeds a little deeper; who went to the trouble of dragging bucketloads of water from the river to irrigate their crops just in case, as occasionally happened, the rains arrived late.

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.

The principal purpose, however, has been to loosen the claw-like grasp that scarcity economics has held over our working lives, and to diminish our corresponding and unsustainable preoccupation with economic growth. For by recognizing that many of the core assumptions that underwrite our economic institutions are an artifact of the agricultural revolution, amplified by our migration into cities, frees us to imagine a whole range of new, more sustainable possible futures for ourselves, and rise to the challenge of harnessing our restless energy, purposefulness, and creativity to shaping our destiny.