Might human sapience be a fluke? Evolutionary biologist Ernst Mayr said — “Nothing demonstrates the improbability of high intelligence better than th… - David Brin

Reciprocal accountability, or criticism [is] the only known antidote to error.

Indeed, the maligned American pastime of baseball may be by-far the greatest and best sport by one criterion, when it comes to emulating and training for genuinely useful Neolithic skills! Think about it. The game consists of lots of patient waiting and watching (stalking), throwing with incredible accuracy and speed, sprinting, dodging... and hitting moving objects real hard with clubs! And arguing. Hey, what else could you possibly need? Now, tell me, how do soccer or basketball prepare you to survive in the wild, hm?

We need feedback from outside ourselves. Life consists of interacting pieces, free to jiggle and rearrange themselves. That's how you make a working system, like an organism, or a culture, or a biosphere.