#game-theory The [[Genome|genome]] has learned that [[Tit for tat]] is a good strategy to transmits to the next generations, what nature took million years to learn should be imitated, **it is rational to cooperate**. Cooperation is egoistic and egoism is good for the whole. Even among human [[Memetic|memetic]], it is discovered a while ago by [[The Buddha]], that egoism is good.