In essence, the game relies on the familiar strategy of tit-for-tat, in which one player (say an established dealer) agrees to comply with the rules of the game until the other side violates them but will punish that player by defecting from the cooperative solution if the other player has done so in the previous round. In general, the established dealer adopts a strategy that promises cooperation to those who cooperate and punishment to those who defect.

Lisa Bernestein, Opting out of the Legal Sys…, loc. 193