> for almost all human history working all a day was the norm. References for that? Didn't they do studies showing that e.g. hunter-gather type tribes such as

> for almost all human history working all a day was the norm. References for that? Didn't they do studies showing that e.g. hunter-gather type tribes such as Kalahari bushmen had about the same amount of downtime as modern Westerners? At any rate, the sort of work you're doing makes a huge difference as to how sustainable doing it 60 hours a week is. (Quote from article linked below: “Our hunter-gatherer ancestors almost certainly did not endure ‘nasty, brutish, and short‘ lives,” he writes of seminal studies of the Ju/’hoansi, a hunter-gatherer group living in southern Africa. “The Ju/’hoansi were revealed to be well fed, content, and longer-lived than people in many agricultural societies, and by rarely having to work more than 15 hours per week had plenty of time and energy to devote to leisure.”)