These assumptions led to a sub-optimal outcome in the game (Confess, Confess). We can see that had both players stayed quiet, they would have received less jail time. This is an unstable equilibrium because –as we saw – both players are motivated to confess if they believe the other will stay quiet. Confess, Confess is therefore the only Nash equilibrium. A Nash equilibrium is a state in a game where no player wishes to deviate from their strategy, given what the other players are doing. If both players were able to cooperate with each other and stay Quiet however, they would have achieved a better outcome. This is an important conclusion as it shows us that two individuals may not cooperate, despite it appearing to be the best strategy for both.