It Can Be Rational to Play Tit-For-Tat in a Repeated

question 95

Multiple Choice

It can be rational to play tit-for-tat in a repeated Prisoners' Dilemma game:

• A) only if the game is played an infinite number of times.
• B) if the game is played an infinite number of times, or if it is uncertain how many times it will be played.
• C) only if the game is played a finite number of times, and that number is known by all the players in advance.
• D) for n-1 of the n periods it will be played, if n is known in advance.
• E) at no time; tit-for-tat is an irrational strategy in this situation.

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