Is there a Distinct Metaphilosophical Companions in Guilt Argument (and Does it Work)?

Abstract

Companions in guilt arguments are widespread in defenses of moral realism and criticisms of error theory. Recently, a number of philosophers have argued that the companions in guilt argument fails because it makes untenable assumptions about the existence of categorical epistemic reasons. In this article, I develop an alternative version of the companions in guilt argument that does not succumb to this criticism, as it begins with the claim that there is a presumptive case in favor of attributing a belief in categorical norms of philosophical argumentation to proponents of the error theory. I then point to an instability in the error-theoretic position and explore the extent to which this instability poses a serious philosophical problem. While this argument has a narrower scope than the traditional companions in guilt arguments, I conclude that it nonetheless poses a significant challenge to any philosophical attempt to deny the categoricity of moral reasons.