Ought-Implies-Can in Context

Abstract

If you ought to do something, does it follow that you are able to do it? The Kantian thesis that ought-implies-can seems intuitive and is widely accepted. Nevertheless, there are several powerful purported counterexamples. In this paper I will apply an independently motivated contextualism about ‘ought’ to make sense of the intuitions on both sides of the argument. Contextualism explains why ought-implies-can seems compelling despite being false in many contexts. The result will be that philosophers cannot in general appeal to ought-implies-can in their arguments.