An outcome is a Nash equilibrium if and only if both players agree that the outcome is desirable.

Question

Quizplus · Accepted Answer

A Nash equilibrium occurs when neither player has an incentive to change their strategy, even if they do not necessarily agree that the outcome is desirable. It may be the case that both players prefer a different outcome, but if changing strategies would lead to a worse outcome for them, they will both stick with the Nash equilibrium.

An Outcome Is a Nash Equilibrium If and Only If