id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-1554 Prisoner's dilemma - Wikipedia .html text/html 10835 1179 66 Because betraying a partner offers a greater reward than cooperating with them, all purely rational self-interested prisoners will betray the other, meaning the only possible outcome for two purely rational prisoners is for them to betray each other.[2] In reality, humans display a systemic bias towards cooperative behavior in this and similar games despite what is predicted by simple models of "rational" self-interested action.[3][4][5][6] This bias towards cooperation has been known since the test was first conducted at RAND; the secretaries involved trusted each other and worked together for the best common outcome.[7] The prisoner's dilemma became the focus of extensive experimental research.[8][9] In casual usage, the label "prisoner's dilemma" may be applied to situations not strictly matching the formal criteria of the classic or iterative games: for instance, those in which two entities could gain important benefits from cooperating or suffer from the failure to do so, but find it difficult or expensive—not necessarily impossible—to coordinate their activities. ./cache/en-wikipedia-org-1554.html ./txt/en-wikipedia-org-1554.txt