[SauronOfMordor]

Besides cave art, being patiently detail oriented is probably necessary to making arrows and other necessary tools.

A tribe which had good makers of tools and weapons had a big advantage.

[SunkenCiv]

I wholeheartedly agree. Also, the length of time those stone-knapping techniques persisted says something about ttheir social cohesion and organization.

[Trailerpark Badass]

Or even just one, from whom the others could learn. I’ve definitely noticed that the most talented toolmakers I’vecome across have what could be called “autistic” traits.