Abstract

This article is primarily a defense of the Paradigm Case Argument (PCA). It is secondarily a comment on a recent controversy over the validity of its use in philosophy. I argue that the controversy rests on a misinterpretation. By extending the analysis of the objections (and here I invoke Descartes' famous method of possible doubt) I show that the occurrence of a paradigm and the fact that a concept is normally used to describe that paradigm logically entails not that the paradigm is instantiated, but only that it is correct to apply that concept to that paradigm. In this manner the ontological fallacy is avoided, and further, this enforces the important separation between saying something about the correct application of a concept and saying something about its meaning