ON PRIMA FACIE OBLIGATIONS AND NONMONOTONICITY
نویسندگان
چکیده
منابع مشابه
An Update Semantics for Prima Facie Obligations
The deontic logic dus is a deontic update semantics for prescriptive obligations based on the update semantics of Veltman. In dus the definition of logical validity of obligations is not based on static truth values but on dynamic action transitions. In this paper prescriptive prima facie obligations are formalized in update semantics. The logic formalizes the specificity principle, has reinsta...
متن کاملPrima Facie Obligation
This paper presents a nonmonotonic deontic logic based on commonsense entailment. It establishes criteria a successful account of obligation should satisfy, and develops a theory that satisfies them. The theory includes two conditional notions of prima facie obligation. One is constitutive; the other is epistemic, and follows nonmonotonically from the constitutive notion. The paper defines unco...
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The deontic update semantics is a dynamic semantics for prescriptive obligations based on Veltman's update semantics, in which the dynamic evaluation of connicts of hierarchic obligations naturally leads to defeasibility. In this paper we use this dynamic semantics to study the diagnostic problem of defeasible deontic logic. For example, consider a defeasible obligationòught to be done' togethe...
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Assumptions are often not considered to be definitely true, but only as prima facie justified. When an assumption is prima facie justified, there can for instance be a reason against it, by which the assumption is not actually justified. The assumption is then said to be defeated. This requires a revision of the standard conception of logical interpretation of sets of assumptions in terms of th...
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non-earthly matters are presumed invalid. In I Frederick Copleston, S.J., A History of Philosophy at pt. 4, 24-25 (1962), Father Copleston observes-with typical succinct brilliance-regarding the above passage from Aristotle: Thus if a patient who suffers from delirium tremens "sees" pink rats, the senses as such do not err; error arises when the patient judges that the pink rats are "out there,...
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ژورنال
عنوان ژورنال: Journal of Philosophical Logic
سال: 2007
ISSN: 0022-3611,1573-0433
DOI: 10.1007/s10992-007-9056-0