 These reflections can give rise to a couple forms of skepticism about moral responsibility (and particularly about blameworthiness). First, we might come to endorse a form of epistemic skepticism on the grounds that we rarely have insight into whether a wrongdoer was akratic—that is, was a knowing wrongdoer—at some suitable point in the etiology of a given action (Rosen 2004). Alternatively, or in addition, one might endorse a more substantive form of skepticism on the grounds that a great many normal wrongdoers don’t exhibit the sort of knowing wrongdoing supposedly required for responsibility. In other words, perhaps very many wrongdoers don’t know that they are wrongdoers and their ignorance on this score is not their fault since it doesn’t arise from an appropriate earlier instance of knowing wrongdoing. In this case, very many ordinary wrongdoers may fail to be morally responsible for their behavior. (For skeptical suggestions along these lines, see M. Zimmerman 1997 and Levy 2011.) 