" Experiments show that even three-year-olds have the intuition that rewards should be proportional to contributions, in places as different as Japanese cities and the camps of Turkana nomads in Kenya. Obviously, it does happen that people take more than their share-but that is universally considered exploitative, and people are eager to avoid or shun individuals who do that. "

― Pascal Boyer , Minds Make Societies: How Cognition Explains the World Humans Create