tit for tat
A game-theoretic strategy brought to the attention of philosophers by Robert Axelrod, in his The Evolution of Cooperation (1984). The question is how to perform to maximize gain in an interaction that consists of an extended sequence of prisoners' dilemmas . The program that won the first competition amongst strategies for solving this problem was one that (a) always co-operated unless (b) on the immediately preceding round, its opponent had defected, in which case it defected. The strategy was both nice, in that it never initiated a cycle of defecting, and also forgiving, in that it punished defection only once. The success of the strategy seemed to give some justification for partially retributive social rules, and might explain the common moral tendency to favour them. However, further work has shown that tit for tat is only the optimum strategy in certain specific circumstances.

Philosophy dictionary. . 2011.

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  • Tit-for-Tat — (auf deutsch „wie du mir, so ich dir“), ist eine durch Robert Axelrods Buch Die Evolution der Kooperation bekannt gewordene Strategie für ein Spiel im Sinne der Spieltheorie. Sie bezeichnet eine Variante der Verhaltensregel „Auge um Auge, Zahn um …   Deutsch Wikipedia

  • Tit-for-tat — (auf deutsch „wie du mir, so ich dir“), ist eine durch Robert Axelrods Buch Die Evolution der Kooperation bekannt gewordene Strategie für ein Spiel im Sinne der Spieltheorie. Sie bezeichnet eine Variante der Verhaltensregel „Auge um Auge, Zahn um …   Deutsch Wikipedia

  • Tit for tat — is a highly effective strategy in game theory for the iterated prisoner s dilemma. It was first introduced by Anatol Rapoport in Robert Axelrod s two tournaments, held around 1980. Based on the English saying meaning equivalent retaliation ( tit… …   Wikipedia

  • Tit for tat — Saltar a navegación, búsqueda Tit for tat es una estrategia óptima en teoría de juegos para el dilema del prisionero iterado. Su nombre proviene de la expresión inglesa tip for tap , que significa represalia equivalente (toma y daca)(tanto tip… …   Wikipedia Español

  • tit-for-tat — adjective Thesaurus: wanting and taking revengesynonym Main entry: tit for tat * * * tit for tat adj tit for tat bombings • • • Main Entry: ↑tit for tat …   Useful english dictionary

  • Tit for tat — Tit Tit, n. 1. A small horse. Tusser. [1913 Webster] 2. A woman; used in contempt. Burton. [1913 Webster] 3. A morsel; a bit. Halliwell. [1913 Webster] 4. [OE.; cf. Icel. titter a tit or small bird. The word probably meant originally, something… …   The Collaborative International Dictionary of English

  • Tit for tat — (engl. Redewendung, auf deutsch sinngemäß „wie du mir, so ich dir“) bezeichnet: Tit for tat (Spieltheorie), Strategie für ein Spiel im Sinne der Spieltheorie Tit for Tat, Originaltitel einer US amerikanischen Filmkomödie von Charley Rogers (1935) …   Deutsch Wikipedia

  • tit for tat — n [U] [Date: 1500 1600; Origin: Probably from tip for tap tit for tat (1500 1600), from tip light blow ( TIP1) and tap light blow ] informal something bad that you do to someone because they have done something bad to you …   Dictionary of contemporary English

  • tit for tat — noun singular or uncount INFORMAL something you do to harm someone because they have harmed you ╾ ,tit for tat adjective …   Usage of the words and phrases in modern English

  • tit for tat — 1550s, possibly an alteration of tip for tap blow for blow, from TIP (Cf. tip) (v.3) tap + TAP (Cf. tap) touch lightly. Perhaps infl. by TIT (Cf. tit) (n.2) …   Etymology dictionary

  • tit for tat — If someone responds to an insult by being rude back, it s tit for tat repaying something negative the same way …   The small dictionary of idiomes

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