 Pereboom’s argument has inspired a number of objections. For example, it could be argued that in Case 1, the manipulation to which Plum is subject undermines his responsibility for some reason besides the fact that the manipulation causally determines his behavior, which would stop the generalization from Case 1 to the subsequent cases (Fischer 2004, Mele 2005, Demetriou 2010; for a response to this line of argument, see Matheson 2016; Pereboom addresses this concern in his 2014 presentation of the argument; also see Shabo 2010). Alternatively, it might be argued, on compatibilist grounds, that Plum is responsible in Case 4, and this conclusion might be extended to the earlier cases since Plum fulfills the same compatibilist-friendly conditions on responsibility in those cases (McKenna 2008).