 It is not clear, however, what consequences Gordon’s conceptual argument would have for mindreading, if any. Even if a capacity to self-project were needed for representing mental states as such, would lack of this capacity necessarily impair mindreading? That is, couldn't one predict explain, predict, and coordinate behavior using a theory of internal states, without conceptualizing these as states of an I or subject? As a more general point, Simulation Theorists have never provided a principled account of what would constitute a “significant impairment” of mindreading capacity.