> Chimps are social creatures, but they’re different from humans. They don’t live in compact cities of a million people. That requires extraordinary social beha

> Chimps are social creatures, but they’re different from humans. They don’t live in compact cities of a million people. That requires extraordinary social behavior.” I don't think cities are a result of social behavior, it's more the result of economic behavior. Cities are clusters of box apartments, which don't really demonstrate social behavior.