Altruism is real and developed because it confers an evolutionary advantage that is ultimately greater than the benefits of selfishness, an international team of mathematicians claims to have proved. Evolutionary biologists have sometimes struggled with the idea that genuine altruism can exist, given the belief that all life is shaped by a constant Darwinian battle that allows only the “survival of the fittest”. Amid such a bitter contest, why would one organism help another without getting something in return?
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