 Yet another distinction is between obligation dilemmas and prohibition dilemmas. The former are situations in which more than one feasible action is obligatory. The latter involve cases in which all feasible actions are forbidden. Some (especially, Valentyne 1987 and 1989) argue that plausible principles of deontic logic may well render obligation dilemmas impossible; but they do not preclude the possibility of prohibition dilemmas. The case of Sartre’s student, if genuinely dilemmatic, is an obligation dilemma; Sophie’s case is a prohibition dilemma. There is another reason that friends of dilemmas emphasize this distinction. Some think that the “disjunctive solution” used by opponents of dilemmas—when equally strong precepts conflict, the agent is required to act on one or the other—is more plausible when applied to obligation dilemmas than when applied to prohibition dilemmas.