Editing Prisoner's dilemma (section)

=== Pure and impure prisoner's dilemma ===
A prisoner's dilemma is considered "impure" if a mixed strategy may give better expected payoffs than a pure strategy. This creates the interesting possibility that the moral action from a utilitarian perspective (i.e., aiming at maximizing the good of an action) may require randomization of one's strategy, such as cooperating with 80% chance and defecting with 20% chance.<ref>{{Cite journal |last1=Kuhn |first1=Steven T. |last2=Moresi |first2=Serge |date=October 1995 |title=Pure and Utilitarian Prisoner's Dilemmas |url=https://www.cambridge.org/core/product/identifier/S0266267100003424/type/journal_article |journal=Economics and Philosophy |language=en |volume=11 |issue=2 |pages=333–343 |doi=10.1017/S0266267100003424 |issn=0266-2671}}</ref>