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My argument is that we first evolved to sweat, not wear the skins of dead animals

We may have come from Africa, but it was during the ice age that we really got going as a species. Rapid climate change forced us to develop improved tools and technology to survive. This eventually led to farming, agriculture, cities and modern civilization.

Without the cold, we'd probably have been quite happy staying in the trees.

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Eh, no, alcoholism lead to farming.

If you need the booze, you need the bees, if you need the bees, you need to stay for the summer. If you want a year round supply you need storage, if you have storage that is not transportable, you have settled.

If you cultivate plants, you can up the numbers and found city states- but for that you allready have to be half way settled. Else that nomadic sheep guy from across the fence will drive his cattle through your fields.

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