How to explain the possibility of wholesale moral error: a reply to Akhlaghi

Farbod Akhlaghi (2021) argues that noncognitivists and naturalists cannot explain the epistemic possibility of wholesale moral error. This would show that noncognitivism and naturalism are false. I argue that noncognitivists and naturalists have no trouble explaining the epistemic possibility of wholesale moral error and that the requirement to explain this possibility is plausible only on one particular conception of epistemic possibility.