在我看来，人类的合作行为的最根本原因是：「合作博弈」
the study of how cooperation can emerge and persist (also known as cooperation theory) as elucidated by the application of game theory, a 1981 paper by political scientist Robert Axelrod and evolutionary biologist W. D. Hamilton (Axelrod & Hamilton 1981) in the scientific literature, or a 1984 book by Axelrod (Axelrod 1984) that expanded the paper and popularized the study.
