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Tit For Tat

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Tit for tat is a strategy which, according to game theory, is the most effective choice for iterated games based on mutual cooperation or defection.

Tit for tat is a strategy which, according to game theory, is the most effective choice for iterated games based on mutual cooperation or defection. Both players benefit if they cooperate, but one benefits and the other loses out if only they defect, and both lose out to a lesser extent if they simultaneously defect. As abstract as such games sound, they have important implications for understanding everything from group selection in biology to cooperation in economics. Under tit for tat, a player will begin by cooperating, then in subsequent iterations will replicate whatever their…

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