G.E. Moore’s open question arguments have been targeted by unsympathetic philosophers for close to a century. Perhaps the most serious criticism directed towards Moore’s OQAs is that they be...

Reasons are considerations that figure in sound reasoning. This is considered by many philosophers to be little more than a platitude. I argue that it actually has surprising and far-reaching metanormative implications. The view that reasons are linked to sound reasoning seems platitudinous only because we tend to assume that soundness is a normative property, in which case the view merely relates one normative phenomenon (reasons) to another (soundness). I argue that soundness is also a descriptive phenomenon, one we can (...) pick out with purely descriptive terms, and that the connection between normative reasons and sound reasoning therefore provides the basis for a reductive account of reasons. Like all proposed reductions, this one must confront some version of G. E. Moore’s open question argument. I argue that a reductive view rooted in the idea that reasons figure in sound reasoning is well-equipped to meet the open question challenge head on. (shrink)

An increasing number of moral realists and anti-realists have recently attempted to support their views by appeal to science. Arguments of this kind are typically criticized on the object-level. In addition, however, one occasionally also comes across a more sweeping metatheoretical skepticism. Scientific contributions to the question of the existence of objective moral truths, it is claimed, are impossible in principle; most prominently, because such arguments impermissibly derive normative from descriptive propositions, such arguments beg the question against non-naturalist moral realism, (...) science cannot inform conceptual accounts of moral judgements, and the conceptual is logically prior to the empirical. My main aim in this paper is to clarify and critically assess these four objections. Moreover, based on this assessment, I will formulate four general requirements that science-based arguments in favor of moral realism and anti-realism should meet. It will turn out that these arguments are limited in several ways, and that some existing arguments have been unsound. Yet it is still possible in principle for the empirical sciences to contribute to the moral realism/anti-realism debate. (shrink)

Moore's Open Question Argument has been heavily debated ever since it was presented over 100 years ago. In the current paper, it is argued that for the realist, and contrary to the received view by many theorists in the debate, the argument in fact lends strong support for non-naturalism. In particular, David Brink's naturalist defense utilizing direct reference theory is scrutinized. It is argued that an application of direct reference to moral kinds, rather than defusing the Open Question Argument, actually (...) underscores the non-naturalist conclusion. The naturalist argument depends heavily on the analogue between natural kinds and moral kinds. It is argued that the Open Question Argument provides prima facie evidence against the idea that moral kinds are natural kinds, and that the naturalist arguments do not overturn this evidence. Moreover, it is argued that similar reasons to those which render direct reference unviable for moral terms also meet two further potential objections against the Open Question Argument, and it is concluded that the argument carries considerable force against the moral naturalist. (shrink)

I assume that there exists a general phenomenon, the phenomenon of the explanatory gap, surrounding consciousness, normativity, intentionality, and more. Explanatory gaps are often thought to foreclose reductive possibilities wherever they appear. In response, reductivists who grant the existence of these gaps have offered countless local solutions. But typically such reductivist responses have had a serious shortcoming: because they appeal to essentially domain-specific features, they cannot be fully generalized, and in this sense these responses have been not just local but (...) parochial. Here I do better. Taking for granted that the explanatory gap is a genuine phenomenon, I offer a fully general diagnosis that unifies these previously fragmented reductivist responses. (shrink)

Over the course of summarizing Volume Three and Does Anything Really Matter?, I argue that Parfit does not give us strong reason to think that Naturalists, Expressivists, and Non-Realist Cognitivists agree.