 We mentioned at the outset that the work of theorists in this area does not usually speak to other work of the same kind. Paul Katsafanas is a recent exception to this generalization. Some types of explanation may produce more in the way of self-knowledge than others; some principles may unify an agent more deeply or robustly. But Katsafanas 2013, chs. 3 and 4, argues that neither Velleman nor Korsgaard is in a position to show that having more rather than less of, respectively, the former or the latter feature is a constitutive end of action; consequently, neither has the resources to reconstruct the comparative notion we need, that of one’s having more reason to pursue one course of action than another.