[dternyak]

How do you understand that the entire world was communist until 10,000 years ago?

The natural order of the world appears to more closely resemble capitalism via the "eat what you kill" philosophy.

I imagine you are imagining close-knit tribes that would share resources freely internally. If so, would you agree that tribe members that leech off of the tribe and don't contribute were likely expelled from the group?

We certainly all do seem to have this innate fear of being abandoned by our group, so I think it's fair to say that we're adapted to avoid this outcome.