  Many think it a desideratum in metaethical theorizing that a candidate theory be consistent with all or most normative theories actually defended by serious normative ethical proponents. This idea has played some role in the debate over the embedding problem insofar as some of the proposals have been inconsistent with substantive positions taken in the debate about the possibility of moral dilemmas (Gibbard 1990, 88; van Roojen 1996, 324). But even aside from that particular issue, the desideratum can make a good deal of work for the non-cognitivist because of the variety of kinds of moral theory and the variety of differing but allegedly consistent judgments proposed by theorists.