Mar 22, 2011 - March 22, 2011 - Lecture 19 Tit for Tat...

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Tit for Tat -Professors in Toronto discuss strategies that can be used in game theory -One theory discussed is Tit for Tat and how it is a forgiving strategy -the reason for this is that in an inFnitely repeated game, where the players agree on what strategies to play, then there is always a chance of cheating -in Tit for Tat the defector is punished for one turn and then forgiven; every thing goes back to normal in the next turn and every turn after that -unless the defector cheats again, then they will be punished again for one turn and everything goes back to normal -basically, it only gives harsh consequences for one turn and then give the player the beneFt of the doubt -but we also see that if given the choice between Tit for Tat and always defecting thereafter, always defecting thereafter is more effective to keep cheating from happening ALWAYS COOPERATE : C C C C C PAVLOV: C C D D D C D C (2, 2) (0, 3) <------ Normal ±orm game representation D (3, 0) (1, 1) ALWAYS DE±ECT: D
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Mar 22, 2011 - March 22, 2011 - Lecture 19 Tit for Tat...

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