Later, Aumann and Brandenburger (1995), re-interpreted Nash equilibrium as an equilibrium in "beliefs", rather than actions. For instance, in rock paper scissors an equilibrium in beliefs would have each player "believing" the other was equally likely to play each strategy. This interpretation weakens the descriptive power of Nash equilibrium, however, since it is possible in such an equilibrium for each player to "actually" play a pure strategy of Rock in each play of the game, even though over time the probabilities are those of the mixed strategy.