 Nowak and Sigmund replace the “perfect” strategies of  Figure 14  with uniformly stochastic ones, reflecting a world of noisy signals and actions. The closest to All Defect will now be a strategy .01, .01, .01, indicating a strategy that has only a 99% chance of defecting initially and in response to either cooperation or defection. The closest to Tit for Tat will be a strategy .99, .99, .01, indicating merely a high probability of starting with cooperation and responding to cooperation with cooperation, defection with defection. Using the mathematical fiction of an infinite game, Nowak and Sigmund are able to ignore the initial value.