 A third reason for being unsatisfied with Lewis’ (Subject Matter) is based upon the observation that the supervenience involved is symmetric. Just as there is no difference in the distribution of truth-values amongst the body of propositions without a reciprocating difference in their subject matter, there is no difference in their subject matter without a difference in the distribution of their truth-values (Armstrong 2004: 7–8). But we also have the firm intuition that the truth or falsity of a proposition depends upon the state of the world in a way in which the state of the world doesn’t depend upon the proposition’s truth or falsity. This means that a supervenience principle like (Subject Matter) cannot be used to articulate the asymmetric way in which truth so depends upon being; for this, it is argued, we need to rely upon a robust asymmetric notion of truth-making (Rodriguez-Pereyra 2005: 18–19). Bricker (2015: 180–183) replies on Lewis’s behalf that the oft-heard complaint that supervenience by itself is not a dependence or ontological priority relation is besides the point. Rather, Bricker argues, the metaphysical punch of Lewis’s doctrine that truth supervenes upon being “has little to do with the ‘supervenience part’ and everything to do with the ‘being’ part and the conception of fundamentality that informs it”, where by ‘fundamental’ Bricker means Lewis’s theory of natural properties and relations.