 A similar problem confronts soft-line replies that point to responsibility-conferring conditions not specified in a particular manipulation case (Lycan 1987; Baker 2006; Feltz 2012; Murray &amp; Lombrozo 2017). That is, even if one could point to a relevant difference between an agent in an extant manipulation case and an agent in the naturally-determined case, this may only serve as an invitation for proponents of the manipulation argument to revise the vignette on which their argument is based so that the agent now satisfies the relevant condition on which the soft-liner insists (Capes, forthcoming). The challenge, then, for defenders of the soft-line approach is to show that there is some kind of requirement for free action and moral responsibility that can be satisfied by agents in deterministic settings but which cannot (in principle) be satisfied by agents in manipulation cases. [For a recent attempt at satisfying this challenge, see Deery and Nahmias (2017); for a reply, see Capes (forthcoming).] 