Introduction
The moral error theory—i.e. moral judgements attempt to describe a reality that does not exist, and as a consequence those judgements are systematically mistaken—and the argument from analogy—the argument for thinking that morality is systematically mistaken in this way—are introduced. Interest in the argument from analogy is motivated by situating it within recent trends in both moral philosophy and epistemology. A roadmap for the book is provided. The conclusion of the book is outlined: it is that the argument from analogy fails. It is not inferred from this that the moral error theory is true. The arguments do not lead to this conclusion. But the book does claim that—for now at least—we do not know that the argument from analogy is false.