Does it ever happen that there are things we shouldn’t do and the reasons we shouldn’t do them are moral reasons, yet doing them is not morally wrong? Sur-prisingly, yes. I argue for a category that has not been recognized by moral the-orists: morally permissible moral mistakes. Sometimes (but far from always) a su-pererogatory action is the thing a person should do in failing to act, one makes a morally permissible moral mistake. Recognizing the category of morally permis-sible moral mistakes solves a puzzle about supererogation, expands the universe of possible moral views, and shows some apparently inconsistent moral views to be consistent.
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