The PD is different, as I mention twice in the article. > Formally, there are two Nash equilibria, at C/D and at D/C. This distinguishes it from the prisoner's

The PD is different, as I mention twice in the article. > Formally, there are two Nash equilibria, at C/D and at D/C. This distinguishes it from the prisoner's dilemma, which has an equilibrium at D/D.