| Egoism and altruism are opposite categories which are kept controversial in the fields of ethnics and philosophy. Went with economics separating from ethnics and developing into an independent science, the controversy has been embodied between economic egoism and economic altruism in the field of economics.(1)kin selection, that is, individual creature provides help to or sacrifices for kin relatives;(2)reciprocal selection, that is, individual creature provides help to each other without kin relationship for some... |
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