  Although Parfit’s focus on the nature of normative facts helps to illuminate exactly what is supposed to be deficient about the naturalist’s account, it is not clear that this Triviality Objection is any more forceful than the Open Question Argument. Parfit’s central motivating thoughts are that (a) natural-moral identity claims are substantive rather than trivial, and therefore (b) moral claims contain different information than natural claims do, which makes it plausible that (c) moral claims concern a different kind of fact. These are exactly the central thoughts behind Moore’s Open Question Argument, and so we can expect naturalists to respond to this objection in largely the same way that they respond to the Open Question Argument. And, indeed, this is what we find. Naturalists have typically responded to the Triviality Objection by saying that moral-natural identities contain additional information in virtue of the fact that they tell us something about the nature of the moral facts in question. Thus, moral-natural identities are informative in the same way that other natural identity claims (like water = H\(_2\)O) are (Copp 2017).