Cooperation or Defect:Prisoner's Dilemma 基因间的博弈：合作还是对抗？ The Similarity and Differences Between Game Theory and Evolution BASICS 生命进化中的博弈 Natural Defection Agame theory paradox calledthe Prisoners Dilemma illustrates why the existence of cooperation in nature is unexpected.Two 总原则： people face jail sentenoes for conspiring to commit a crime Their sentences depend on whether they elect tocooperate and remain silent or defect and confess to the crime [see payaff table 有利自身生存 below].Because neither knows what the other will do,the rational choice-the one that always offers the better payoff-is to defect. INDIVIDUAL2 COOPERATE DEFECT (remain silent) (oo mfess 特点： TYnaIAIONI 1.稳定性与多样性共存 2 years in jall 4 years in jail 2 years in jail 1 year in jail 2.可遗传性 3.可扩增性 13B0 1yearin jail 3 years in jail years in jail 3 years injai基因间的博弈：合作还是对抗？ Cooperation or Defect: Prisoner’s Dilemma The Similarity and Differences Between Game Theory and Evolution 生命进化中的博弈 总原则： 有利自身生存 特点·： 1. 稳定性与多样性共存 2. 可遗传性 3. 可扩增性