The simple tit-for-tat strategy has been able to dominate many more complex strategies in repeated prisoners' dilemma games.

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The simple tit-for-tat strategy, which involves cooperating on the first move and then mirroring the opponent's previous move, has been found to be successful in many studies of repeated prisoners' dilemma games. It involves a relatively low level of complexity compared to some other strategies and has consistently performed well against a variety of opponents.

The Simple Tit-For-Tat Strategy Has Been Able to Dominate Many