A tournament of its iterated variant was proposed by Robert (*) Axelrod and won by Anatol Rapoport's "tit for tat" strategy.
This scenario was used to model the evolution of reciprocal altruism in a 1971 paper by Robert Trivers. Proposed by Merril Flood and Melvin Dresher, this scenario tends to be defined by the conditions T greater than R greater than P greater than S, though related variants relax some of those conditions. A tournament of its iterated variant was proposed by Robert (*) Axelrod and won by Anatol Rapoport's "tit for tat" strategy. For 10 points, name this zero-sum problem of game theory, whose title characters must agree either to stick to their story or to rat each other out.
This scenario was used to model the evolution of reciprocal altruism in a 1971 paper by Robert Trivers.
{prisoner’s dilemma}