Abstract

Recent work by Matthew Bedke and Max Hayward develops a new attack on metaethical non-naturalists: that they are committed to an immoral state of mind, because they must be willing to change their mind about the moral importance of certain actions given possible evidence about the layout of the non-natural realm. For example, they must be willing to decrease their credence that torturing babies is bad, if they ever get evidence that torturing babies is not in the extension of a non-natural property. The present paper aims to both develop the strongest version of this argument and propose a response to it. The first section argues that the strongest version of this attack does not depend on whether accepting non-naturalism commits one to believing a certain kind of conditional proposition. Rather, it depends on whether accepting non-naturalism commits one to having a certain kind of conditional credences. Moreover, the moral criticism at hand does not hinge on the causal inertness of non-natural properties. And in so far as the argument does not depend on causal inertness, the people threatened by immorality are not just non-naturalists, but metaethicists in general (Sect. 2). This is because the worry hinges instead on particular relationships of epistemic dependence between our metaethical and some of our ethical views. But it is not clear that those relationships obtain; we could adopt metaethical methodologies that preclude morally problematic dependence of relevant first order views on evidence about our metaethical theories (Sect. 3).