They are familiar scenes: politicians bemoaning the death of family values only for extramarital affairs to be unveiled or politicians preaching financial sacrifice while their expense accounts fatten up. Moral corruption and power asymmetries are pervasive in human societies, but as it turns out, that may not be such a bad thing. Francisco Ubeda, an evolutionary biology professor at the University of Tennessee, Knoxville, and Edgar Duenez of Harvard University found that power and corruption may play a role in maintaining overall societal cooperation...
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