 Here each player can choose “cooperate”, (\(\bC\)) “defect” (\(\bD\) ), or “neither” (\(\bN\)),and the payoffs are ordered as before. Defection is no longer dominant, because each player is better off choosing \(\bC\) than \(\bD\) when the other chooses \(\bN\). Nevertheless \((\bD, \bD)\) is still the unique equilibrium. Let us label a game like this in which the selfish outcome is the unique equilibrium an equilibrium PD, and one in which the selfish outcome is a pair of dominant moves a dominance PD. As will be seen below, attempts to “solve” the PD by allowing conditional strategies can create multiple-move games that are themselves equilibrium PDs.