 But when is a benighting act blameworthy? Several philosophers have suggested that we are culpable for benighting acts only when we engage in them knowing that we are doing so and knowing that we should not do so (Levy 2011, Rosen 2004, M. Zimmerman 1997). Ultimately, the suggestion is that ignorance for which one is blameworthy, and that leads to blameworthy unwitting wrongdoing, has its source in knowing wrongful behavior. Thus, if someone unwittingly does something wrong, then that person will be blameworthy only if we can explain his lack of knowledge (his “unwittingness”) by reference to something else that he knowingly did wrong.