Tag Archives: obligation

Michael J. SHAFFER ABSTRACT: This paper introduces two new paradoxes for standard deontic logic (SDL). They are importantly related to, but distinct from Ross’ paradox. These two new paradoxes for SDL are the simple weakening paradox and the complex weakening paradox. Both of these paradoxes arise in virtue of the underlying logic of SDL and are consequences of the fact …

Miguel LÓPEZ-ASTORGA ABSTRACT:Although written long before, in 2012 a work by Prior presenting a system that was able to demonstrate Hintikka’s theorem was published. Maybe one of the most relevant elements of that system is an axiom that clearly relates necessity, and hence modal logic, to obligation, and hence deontic logic. This paper analyzes that axiom based upon Carnap’s method …