# Idea A decision involves only one actor or agent whose actions don't depend on the actions of others. In a game, however, the objective and actions of an actor depend on the actions and objectives of others. Your optimal decision depends on the decisions of others. In [[game theory]], it's assumed that other actors are all acting rationally. # References - https://www.coursera.org/learn/model-thinking/lecture/C4Ekm/rational-actor-models