One reason people often disagree about what's immoral is that they have different values. But there's another important reason that I think few are aware of: there are at least four different kinds of moral evaluations of behavior, and it's easy to conflate them. I argue that only one of these categories is actually sufficient grounds for judging an *action* as immoral, despite many people using the other categories to evaluate the morality of actions. I think they are making a subtle (and comm...