The concept of role in sociology, which explicitly involves the expectations that other. have about one’s behavior, as well as one’s expectations about how others will behave toward him,can in part be interpreted in terms of the stability of “convergent expectations,” of the same type that are involved in the coordination game. Oneis trapped in a particular role, or by another’s role, because it is the only role that in the circumstances can be identified by a process of tacit consent.

Thomas C. Schelling, The strategy of conflict, Cambridge, MA, 1980, p. 102