Deontic Logic
Anderson advocated the view that sentences of the form "It ought to be (the case) that A" should be interpreted logically as:
- Not-A entails v,
where v means something like a norm has been violated. He developed systems of deontic relevance logic containing a special constant v (notation varies) for this purpose. Such systems have sometimes been characterized as "reductions" of deontic logic to alethic modal logic. This is misleading at best, however, since alethic modal logics generally do not contain anything like Anderson's special v constant.
Read more about this topic: Alan Ross Anderson
Famous quotes containing the word logic:
“Neither Aristotelian nor Russellian rules give the exact logic of any expression of ordinary language; for ordinary language has no exact logic.”
—Sir Peter Frederick Strawson (b. 1919)