“People may be constrained in two basic ways: physically, by confining them in jails, mental hospitals, and so forth; and symbolically, by confining them in occupations, social roles, and so forth. Actually, confinement of the second type is more common and pervasive in the day-to-day conduct of society’s business; as a rule, only when the symbolic, or socially informal, confinement of conduct fails or proves inadequate, is recourse taken to physical, or socially formal, confinement…. When people perform their social roles properly – in other words, when social expectations are adequately met – their behavior is considered normal. Though obvious, this deserves emphasis: a waiter must wait on tables; a secretary must type; a father must earn a living; a mother must cook and sew and take care of her children. Classic systems of psychiatric nosology had nothing to say about these people, so long as they remained neatly imprisoned in their respective social cells; or, as we say about the Negroes, so long as they “knew their place.” But when such persons broke out of “jail” and asserted their liberty, they became of interest to the psychiatrist.”