Many moral realists have employed a strategy for arguing for moral realism by

claiming that if epistemic normativity is categorical and that if this epistemic

normativity exists, then categorical normativity exists. In this paper, we will

discuss that argument, examine a way out, and respond to the objections people

have recently raised in the literature. In the end, we conclude that the

objections to our way out will do little in the way of motivating those who

already do not believe in categorical normativity, thereby severing the power

the aforementioned parity argument is designed to possess.

Keywords: Moral error theory, Meta-ethics, Companions in guilt, Nihilism.