 This entry assumes that PAP’s proposed condition is intended to be explanatory, not merely necessary for responsibility. (Not all necessary conditions are explanatory, as any Euthyphro-style problem will show.) That is, the intent of the principle is that when a person lacks alternatives, it is at least in part in virtue of this that she is not morally responsible (Fischer 1994: 140; Pereboom 2001: 25). As formulated, however, PAP seems too weak for this purpose, as it appears to allow any alternative action to meet its requirement. Suppose that when Kurt stole John’s lunch, he had an alternative, but it was so remote from his mind, so irrelevant to his circumstances, that he never considered it: Kurt could have sat down and whistled a tune. Although this is an alternative to stealing John’s lunch, it is not the sort that could potentially explain his responsibility. Thus finding PAP too weak, McKenna strengthens its requirements: