Journal of Philosophical Logic

, Volume 26, Issue 4, pp 423-448

First online:

Situationist Deontic Logic

  • Sven Ove HanssonAffiliated withDepartment of Philosophy, Uppsala University

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Situationist deontic logic is a model of that fraction of normative discourse which refers to only one situation and one set of alternatives. As we can see from a whole series of well-known paradoxes, standard deontic logic (SDL) is seriously mistaken even at the situationist level. In this paper it is shown how a more realistic deontic logic can be based on the assumption that prescriptive predicates satisfy the property of contranegativity. A satisfactory account of situation-specific norms is a necessary prerequisite for a successful treatment of more complex normative structures.

deontic logic norms situations preference logic