Error theories about practical deontic judgements claim that no substantive practical deontic judgement is true. Practical deontic judgements are practical in the sense that they concern actions, and they are deontic in the sense that they are about reasons, rightness, wrongness, and obligations. This paper assumes the truth of an error theory about practical deontic judgements in order to examine its ramifications. I defend three contentions. The first is that, if so-called fitting-attitude analyses of value fail, the truth of some (...) substantive evaluative judgements would not be threatened by the fact that no substantive practical deontic judgment is true. Secondly, in light of the truth of these evaluative judgements, the best thing we could do is to continue to make practical deontic judgements despite the truth of an error theory about practical deontic judgements. My third contention is that, if some evaluative judgements are unaffected by an error theory about practical deontic judgements, then such an error theory will eventually lead us to some version of consequentialism. (shrink)