Are humans cooperative or competitive in the state of nature? Philosophical and empirical angles.

“Social Contract”

“If humans are naturally cooperative within groups, does the existence of modern "nations" help us scale that cooperation, or does it just create larger, more dangerous "out-groups"?”

“If Rousseau was right that society "corrupts" us, would it even be possible to return to a simpler, more cooperative way of living in a world of 8 billion people?”