  One might think that Cornell realists can respond by offering a new account of moral language. But this response faces severe difficulties, on two fronts. First, the causal reference theory is what allows Cornell realists to avoid a commitment to analytic naturalism and the accompanying Open Question Argument. If the causal reference theory is false of moral terms, the naturalist may be forced to accept a description theory of moral semantics. This would re-open the Open Question Argument as an important line of objection to naturalism.