Real Logic is Nonmonotonic
- Cite this article as:
- Kyburg, H.E. Minds and Machines (2001) 11: 577. doi:10.1023/A:1011808015672
Charles Morgan has argued that nonmonotonic logic is ``impossible''. We show here that those arguments are mistaken, and that Morgan's preferred alternative, the representation of nonmonotonic reasoning by ``presuppositions'' fails to provide a framework in which nonmonotonic reasoning can be constructively criticised. We argue that an inductive logic, based on probabilistic acceptance, offers more than Morgan's approach through presuppositions.