Moral error theory is the doctrine that our first-order moral commitments are pervaded by systematic error. It has been objected that this makes the error theory itself a position in first-order moral theory that should be judged by the standards of competing first-order moral theories :87–139, 1996) and Kramer. Kramer: “the objectivity of ethics is itself an ethical matter that rests primarily on ethical considerations. It is not something that can adequately be contested or confirmed through non-ethical reasoning” [2009, 1]). (...) This paper shows that error theorists can resist this charge if they adopt a particular understanding of the presuppositions of moral discourse. (shrink)

Ronald Dworkin charges that the error theory is a position in first-order moral theory that should be judged by the standards that are appropriately used in evaluating first-order theories. Perl and Schroeder contend that a “presuppositional error theory” can avoid Dworkin’s charge. On the presuppositional view, moral sentences, such as, “It is wrong to torture babies,” have a false presupposition. Perhaps, for example, they presuppose that there are objectively prescriptive moral standards. This proposal can be understood in different ways, depending (...) on one’s view about presupposition. In Perl and Schroeder’s view, the “at issue” proposition expressed by an assertion of can be cleanly distinguished from the presupposed proposition, and the overall content of an assertion of is the set of these two propositions. On an “entanglement view”, the presupposed proposition is entangled with the proposition expressed by an assertion of in such a way that it is not possible to distinguish cleanly between the “at issue” content and the presupposed content. Perl and Schroeder are correct that, on their view, the presuppositional error theory can avoid Dworkin’s charge. On the entanglement view, however, it cannot avoid Dworkin’s charge. Unfortunately, however, I argue, Perl and Schroeder’s view is implausible for independent reasons. Further, I contend, Perl and Schroeder do not have a solid argument against the entanglement view. They also lack a solid argument in favor of the key, controversial thesis that moral sentences presuppose that there are objectively prescriptive moral standards. (shrink)