According to wikipedia, the $300 vs $100 is fine for a one-shot prisoner’s dilemma. But an iterated prisoner’s dilemma would require (defect against cooperate)+(cooperate against defect) < 2*(cooperate cooperate), since the best outcome is supposed to be permanent cooperate/cooperate rather than alternating cooperation/defection.
However, the fact that this games gives out the same 0$ for both cooperate/defect and defect/defect means it nevertheless doesn’t count as an ordinary prisoner’s dilemma. Defecting against someone who defects needs to be strictly better than cooperating against a defector. In fact, in this case, every EA is likely going to put some positive valuation on $300 to both miri and amf, so cooperating against a defector is actively preferred to defecting against a defector.
According to wikipedia, the $300 vs $100 is fine for a one-shot prisoner’s dilemma. But an iterated prisoner’s dilemma would require (defect against cooperate)+(cooperate against defect) < 2*(cooperate cooperate), since the best outcome is supposed to be permanent cooperate/cooperate rather than alternating cooperation/defection.
However, the fact that this games gives out the same 0$ for both cooperate/defect and defect/defect means it nevertheless doesn’t count as an ordinary prisoner’s dilemma. Defecting against someone who defects needs to be strictly better than cooperating against a defector. In fact, in this case, every EA is likely going to put some positive valuation on $300 to both miri and amf, so cooperating against a defector is actively preferred to defecting against a defector.