G.E. Moore’s open question arguments (OQAs) have been targeted by unsympathetic philosophers for close to a century. Perhaps the most serious criticism directed towards Moore’s OQAs is that they beg the question against targeted theories. After presenting an OQA extracted from §13 of Principia Ethica, I lodge this question-begging objection before articulating Moore’s autobiographical efforts to mitigate its force. I then suggest that Moore’s OQAs are incomplete, awaiting the final stage of construction, an explanation of the ‘open question’ phenomenon—the inclination (...) of many philosophers to endorse the central premises of Moore’s OQAs. After a brief investigation of noncognitivist attempts to explain the phenomenon, I propose a semantic explanation, a cognitivist explanation that commits its proponents neither to mysterious nonnatural properties nor to perilous positions regarding the paradox of analysis. I conclude by arguing that Moore’s completed OQAs are successful, but his deployment of them in efforts to refute metaethical naturalism, even analytic or semantic versions, is not. (shrink)

At the beginning of the twentieth century, G. E. Moore’s open question argument convinced many philosophers that moral statements were not equivalent to statements made using non- moral or descriptive terms. For any non- moral description of an object or object it seemed that competent speakers could without confusion doubt that the action or object was appropriately characterized using moral terms such as ‘good’ or ‘right’. The question of whether the action or object so described was good or right was (...) always open, even to competent speakers. In the absence of any systematic theory to explain the possibility of synthetic as opposed to analytic identities, many were convinced this demonstrated that moral properties could not be identified with any natural properties. Thus Moore and others concluded that moral properties such as goodness were irreducible sui generis properties, not identical to natural. (shrink)

§13 of Principia Ethica contains G. E. Moore’s most famous open question arguments. Several of Moore’s contemporaries defended various forms of metaethical nonnaturalism—a doctrine Moore himself endorsed—by appeal to OQAs. Some contemporary cognitivists embrace the force of Moore’s OQAs against metaethical naturalism. And those who posit noncognitivist meaning components of ethical terms have traditionally used OQAs to fuel their own emotivist, prescriptivist, and expressivist metaethical programs. Despite this influence, Moore’s OQAs have been ridiculed in recent decades. Their deployment has been (...) labeled “accident prone,” “simple to dismiss,” and just plain invalid. Critics accuse Moore of begging the question. Others argue that his OQAs founder upon the paradox of analysis. And still others argue that Moore’s open question argumentation is incompatible with the Kripke–Putnam causal theory of reference and thus it “simply fails; it is bankrupt”. I aim to show that there is something of continuing value in Moore’s open question efforts. I present and criticize Nicholas Sturgeon’s influential interpretation of Moore’s OQAs as a means to motivate and explicate my own interpretation of Moore’s thoughts in §13 of Principia Ethica. I then articulate the role that OQAs are intended to play in Moore’s overall argumentative strategies to undermine metaethical naturalism and thereby provide some theoretical support for metaethical nonnaturalism. Finally, I attend to the most prominent objections to Moore’s theorizing and attempt to evaluate the extent to which Moore’s efforts are successful. My hope is to display both the promising portions of Moore’s metaethical argumentation in Principia Ethica as well as its limitations. (shrink)

Perhaps the two main contemporary formulations of ethical naturalism – Synthetic Ethical Naturalism (SEN) and Analytical Descriptivism – seem to conflict with plausible views about cases where moral debate and disagreement is possible. Both lack safeguards to avoid divergence of reference across different communities, which can scupper the prospects for genuine moral disagreement. I explore the prospects for supplementing both views with Lewis's notion of eligibility, arguing that this can solve the problem for a modified form of analytical descriptivism, and (...) for a modified form of SEN too (though perhaps more controversially). I close by considering the appropriateness of using the notions of eligibility and joint-carving in ethics. (shrink)

Millianism is a thesis in philosophy of language that the meaning of a proper name is simply its referent. Millianism faces certain puzzles called Frege's Puzzles. Some Millians defend the view by appealing to a metaphysics of belief that involves Ways of Believing. In the first part of this paper, I argue that ethical naturalists can adopt this Millian strategy to resist Moore’s Open Question argument. While this strategy of responding to the Open Question Argument has already appeared in the (...) literature, I show that the Millian strategy can be easily extended to other versions of the Open Question Argument that are alleged to be stronger than the original formulation. The allegedly stronger versions of the Open Question Argument are not straightforwardly Frege's Puzzles, but they still have analogue versions that have been presented against Millianism. What the Ways Millian can say against those analogue versions can easily be applied to these other versions of the Open Question Argument. (shrink)