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Tit for tat is an English saying meaning "equivalent retaliation ". It is also a highly effective strategy in game theory for the iterated prisoner's dilemma. The strategy was first introduced by Anatol Rapoport in Robert Axelrod 's two tournaments,  held around Notably, it was on both occasions both the simplest strategy and the most successful in direct competition.
The phrase originally came from another phrase "tip for tap", first used in An agent using this strategy will first cooperate, then subsequently replicate an opponent's previous action. If the opponent previously was cooperative, the agent is cooperative. If not, the agent is not. This is similar to superrationality and reciprocal altruism in biology.
The success of the tit-for-tat strategy, which is largely cooperative despite that its name emphasizes an adversarial nature, took many by surprise. Arrayed against strategies produced by various teams it won in two competitions.
After the first competition, new strategies formulated specifically to combat tit-for-tat failed due to their negative interactions with each other; a successful strategy other than tit-for-tat would have had to be formulated with both tit-for-tat and itself in mind.
This result may give insight into how groups of animals and particularly human societies have come to live in largely or entirely cooperative societies, rather than the individualistic " red in tooth and claw " way that might be expected from individuals engaged in a Hobbesian state of nature.
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Top male porn star He calls the poor fellow over to his palace after. Inked bdsm submissive jerked and whipped. Reciprocal altruism works in animal communities where the cost to the benefactor in any transaction of food, mating rights, nesting or territory is less than the gains to the beneficiary. This page was last edited on 21 October , at Their application of game theory to the evolution of animal strategies launched an entirely new way of analysing animal behaviour.
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Choking on a Huge Cock. Tit for tat is an English saying meaning "equivalent retaliation ". Most situations in the real world are less competitive than the total competition in which the tit-for-tat strategy won its competition.
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Desperate blond guy gags on hard cock before anally destroyed. The strategy is also provocable because it provides immediate retaliation for those who compete.Related Videos
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This article needs additional citations for verification. Gay sex They start out with some light tickling and smacking before. The strategy is also provocable because it provides immediate retaliation for those who compete. After analyzing the results of the first experiment, he determined that had a participant entered the tit for two tats strategy it would have emerged with a higher cumulative score than any other program.
On the other hand, if the other party competes, then the tit-for-tat strategy will lead the alternate party to compete as well. Older dom Sebastian Kane jerking off submissive Aaron Aurora. Elgin dating