Wow, what a paper! The Evolutionary Dominance of Ethnocentric Cooperation http://jasss.soc.surrey.ac.uk/16/3/7.html pic.twitter.com/Z0v2od1F1C
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Read Progressive Rascism. It's an eye opener!
Multi-level cultural group selection as the basis of the evolution of cooperation. States wouldn't have evolved if people of different ethnicities didn't cooperate. So any finding that ethnocentrism is 'dominant' has to be wrong. They are all around us.
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