“Our tribal minds make it easy to divide us, but without our long period of tribal living there’d be nothing to divide in the first place. There’d be only small families of foragers – not nearly as sociable as today’s hunter-gatherers – eking out a living and losing most of their members to starvation during every prolonged drought. The coevolution of tribal minds and tribal cultures didn’t just prepare us for war; it also prepared us for far more peaceful coexistence.”
