Surprisingly, many ethical realists and anti-realists, naturalists and not, all accept some version of the following normative appeal to the natural (NAN): evaluative and normative facts hold solely in virtue of natural facts, where their naturalness is part of what fits them for the job. This paper argues not that NAN is false but that NAN has no adequate non-parochial justification (a justification that relies only on premises which can be accepted by more or less everyone who accepts NAN) to (...) back up this consensus. I show that we cannot establish versions of NAN which are interesting in their own right (and not merely as instances of a general naturalistic ontology) by appealing to the nature of natural properties or the kind of in-virtue-of relation to which NAN refers, plus other plausible nonparochial assumptions. On the way, I distinguish different types of 'in virtue of claims. I conclude by arguing that the way in which assessment of meta-ethical hypotheses is theory-dependent predicts the failure of non-parochial justifications of NAN. (shrink)

Vous pensez peut-être que la peine de mort est injuste ? Ou que l’avortement est moralement acceptable ? Se pourrait-il alors que vous vous trompiez ? C’est en tout cas l’avis des théoriciens de l’erreur. D’après ces philosophes, tous les jugements moraux sont faux parce qu’ils présupposent à tort l’existence de faits moraux à la fois objectifs et non naturels. Organisé autour de ce défi nihiliste, le présent ouvrage aborde les principales théories métaéthiques comme autant de tentatives, plus ou moins (...) fructueuses, de sauver la morale. Les théories qu’on y rencontre combinent invariablement une thèse psychologique (sur la nature des jugements moraux) et une thèse ontologique (sur l’existence d’une réalité morale conforme auxdits présupposés). Dans le style argumentatif sobre et précis qui caractérise la philosophie analytique, ce manuel de métaéthique – le premier en langue française – entreprend d’évaluer minutieusement un ensemble de théories sur la morale. Bien que destiné en premier lieu aux enseignants de philosophie et à leurs étudiants, il se veut accessible à tous ceux qu’intéresse l’éthique. (shrink)

Sumário: 1. El caso del método científico, Alberto Oliva; 2. Un capítulo de la prehistoria de las ciencias humanas: la defensa por Vico de la tópica, Jorge Alberto Molina; 3. La figura de lo cognoscible y los mundos, Pablo Vélez León; 4. Lebenswelt de Husserl y las neurociencias, Vanessa Fontana; 5. El uso estético del concepto de mundos posibles, Jairo Dias Carvalho; 6. Realismo normativo no naturalista y mundos morales imposibles, Alcino Eduardo Bonella; 7. En la lógica de pragmatismo, Hércules (...) de Araujo Feitosa, Luiz Henrique da Cruz Silvestrini; 8 La lógica, el tiempo y el lenguaje natural: un sistema formal para tiempos de portugués, Carlos Luciano Manholi. / Temas em filosofia contemporânea II / Jonas Rafael Becker Arenhart, Jaimir Conte, Cezar Augusto Mortari (orgs.) – Florianópolis : NEL/UFSC, 2016. 167 p. : tabs. - (Rumos da epistemologia ; v. 14); ISBN 978-85-87253-27-9 (papel); ISBN 978-85-87253-26-2 (e-book). (shrink)

In his paper "Supervenience Revisisted", Simon Blackburn redeployed his novel modal argument against moral realism as an argument against Donald Davidson's position of 'anomalous monism' in the philosophy of mind (Blackburn 1985).' I shall assess this redeployment. In the first part of this paper, I shall lay out Blackburn's argument. In the second and longer part I shall examine Davidson's denial of psychophysical laws in the light of this argument.

Can a certain sort of property supervene on another sort of property without reducing to it? Many philosophers find the superveniencel irreducibility combination attractive in the philosophy of mind and in moral philosophy. They think that mental properties supervene upon physical properties but do not reduce to them, or that moral properties supervene upon natural properties without reducing to them. Other philosophers have tried to show that the combination is ultimately untenable, however attractive it might initially appear. Thus Ted Honderich (...) and Jaegwon Kim argue that the combination cannot explain the causal efhcacy of the supervening properties. And Simon. (shrink)

For any area of our thought — moral, modal, scientihc, or theological we can ask what explains the way we think. After all, we might never have thought in such terms, or that sort of thought might have been different from the way it is. So there must be some explanation of why it is as it is. Such an explanation would be part of a naturalistic account of the mind.

I consider the metaphysical consequences of the view that propositional attitudes have essential normative properties. I argue that realism should take a weak rather than a strong form. I argue that expressivism cannot get off the ground. And I argue that eliminativism is self-refuting.

I defend the view that strong psychophysical superveniences is necessary and sufficient to explain the causal efficacy of mental properties. I employ factual and counterfactual conditionals as defeasible criteria of causal efficacy. And I also deal with certain problems arising from disjunctive and conjunctive properties.

What is the difference between belief and desire? In order to explain the difference, recent philosophers have appealed to the metaphor of.

The morality of virtual representations and the enactment of prohibited activities within single-player gamespace continues to be debated and, to date, a consensus is not forthcoming. Various moral arguments have been presented to support the moral prohibition of virtual enactments, but their applicability to gamespace is questioned. In this paper, I adopt a meta-ethical approach to moral utterances about virtual representations, and ask what it means when one declares that a virtual interaction ‘is morally wrong’. In response, I present constructive (...) ecumenical expressivism to explain what moral utterances should be taken to mean, argue that they mean the same when referring to virtual and non-virtual interactions and, given, explain why consensus with regard to virtual murder, rape and paedophilia is not forthcoming even though such consensus is readily found with regard to their non-virtual equivalents. (shrink)

This paper concerns non-causal normative explanations such as ‘This act is wrong because/in virtue of__’. The familiar intuition that normative facts aren't brute or ungrounded but anchored in non- normative facts seems to be in tension with the equally familiar idea that no normative fact can be fully explained in purely non- normative terms. I ask whether the tension could be resolved by treating the explanatory relation in normative explanations as the sort of ‘grounding’ relation that receives extensive discussion in (...) recent metaphysics. I argue that this would help only under controversial assumptions about the nature of normative facts, and perhaps not even then. I won't try to resolve the tension, but draw a distinction between two different sorts of normative explanations which helps to identify constraints on a resolution. One distinctive constraint on normative explanations in particular might be that they should be able to play a role in normative justification. (shrink)

I argue that Jonas Olson’s argument from irreducible normativity is not a secure basis for an argument for error theory and that a better basis is provided by the argument from supervenience, which has more bite against non-naturalist moral realism than Olson is willing to allow. I suggest there may be a view which can allow for the existence of irreducibly normative facts while remaining unaffected by the kinds of arguments that work against non-naturalist realism. This view is expressivism. Interestingly, (...) James Dreier has recently suggested that expressivism may not escape these arguments. I very briefly outline possible response strategies for expressivists. I close by discussing Olson’s argument against expressivism. Olson suggests, somewhat surprisingly, that expressivism is a bad fit with a plausible evolutionary explanation of our moral thought. I argue that Olson’s argument does not succeed. (shrink)

Many philosophers believe that judgments about propositional attitudes, or about which mental states are expressed by which sentences, are normative judgments. If this is so, then metanormative expressivism must be given expressivist treatment. This might seem to make expressivism self-defeating or worrisomely circular, or to frustrate the explanatory ambitions central to the view. I argue that recent objections along these lines to giving an expressivist account of expressivism are not successful. I shall also suggest that in order to deal with (...) these worries, Dreier's influential response to the so-called ‘problem of creeping minimalism’ must be slightly revised. (shrink)

Expressivism is supposed to have an advantage over moral realism, in that it can explain why it is a conceptual truth that the moral supervenes on the natural, even though the natural does not entail the moral. I develop an analogy between expressivism and a version of theistic moral realism, and argue that this version of theistic moral realism shares any advantage that expressivism might have. It may be that the alleged advantage that expressivism has over moral realism is overstated. (...) Nevertheless, possible analogies between expressivism and theistic moral realism have received very little attention in the past, and are worth considering for their own sake. (shrink)

This chapter offers an introduction to naturalist views in contemporary metaethics. Such views attempt to find a place for normative properties (such as goodness and rightness) in the concrete physical world as it is understood by both science and common sense. The chapter begins by introducing simple naturalist conceptual analyses of normative terms. It then explains how these analyses were rejected in the beginning of the 20th Century due to G.E. Moore’s influential Open Question Argument. After this, the chapter considers (...) what good general reasons there are for defending naturalism in metaethics. The bulk of the chapter will then survey new semantic and metaphysical forms of naturalism which in different ways attempt to address Moore’s objection to naturalism. These more recent versions of naturalism—using new resources from philosophy of language, philosophy of mind, metaphysics, philosophy of science and epistemology—attempt to explain why the Open Question Argument fails. (shrink)

It is common in metaethics today to draw a distinction between “naturalist” and “non-naturalist” versions of moral realism, where the former view maintains that moral properties are natural properties, while the latter view maintains that they are non-natural properties instead. The nature of the disagreement here can be understood in different ways, but the most common way is to understand it as a metaphysical disagreement. In particular, the disagreement here is about the reducibility of moral properties, where the “naturalists” maintain (...) that moral properties are in some way reducible to the lower-level natural properties on which they supervene, while the “non-naturalists” maintain that moral properties are sui generis and robustly irreducible. In this paper I present a novel version of realist ethical naturalism—a view that I call Emergentist Ethical Naturalism—that reveals this common way of understanding the distinction between naturalism and non-naturalism to be flawed by combining a commitment to ethical naturalism with a commitment to the sui generis and robustly irreducible nature of moral properties that typically defines non-naturalism. Then, after presenting the theory and addressing a few worries that one might have about it, I show how it offers some novel, emergence-based responses to the various supervenience challenges that plague moral realism and thereby gives the ethical naturalist a robustly non-reductive option for dealing with these challenges. (shrink)

This paper is concerned with the expressivist account of moral supervenience that Simon Blackburn has offered. First, the account is presented, and an objection to it is thereafter discussed. In short, the objection is that the supervenience constraint in moral discourse is mysterious, given that no similar constraint governs speech and thought in other areas of discourse that seem to be prime candidates for an expressivist analysis. The conclusion of the paper is that this objection can be fended off.

Contrary to popular opinion, non-natural realism can explain both why normative properties supervene on descriptive properties, and why this pattern is analytic. The explanation proceeds by positing a subtle polysemy in normative predicates like “good”. Such predicates express slightly different senses when they are applied to particulars (like Florence Nightingale) and to kinds (like altruism). The former sense, “goodPAR”, can be defined in terms of the latter, “goodKIN”, as follows: x is goodPAR iff there is a kind K such that (...) x is a token of K, and K is goodKIN. Now if x and y are descriptively exactly similar, then they are tokens of exactly the same kinds, so x is a token of a goodKIN kind if and only if y is. Therefore, by the definition, x is goodPAR if and only if y is. Supervenience just falls out of the definition of “goodPAR”. (shrink)

This paper defends moral realism against Sharon Street’s “Darwinian Dilemma for Realist Theories of Value” (this journal, 2006). I argue by separation of cases: From the assumption that a certain normative claim is true, I argue that the first horn of the dilemma is tenable for realists. Then, from the assumption that the same normative claim is false, I argue that the second horn is tenable. Either way, then, the Darwinian dilemma does not add anything to realists’ epistemic worries.

In this paper I argue that the common practice of employing moral predicates as explaining phrases can be accommodated on an expressivist account of moral practice. This account does not treat moral explanations as in any way second-rate or derivative, since it subsumes moral explanations under the general theory of program explanations (as defended by Jackson and Pettit). It follows that the phenomenon of moral explanations cannot be used to adjudicate the debate between expressivism and its rivals.

We elucidate the conditions under which any hypothesis is explanatorily relevant by analyzing several tests of explanatory relevance and explanations based on those tests. A new causal criterion of explanatory relevance is developed and defended. We show how the causal criterion succeeds in establishing, at the very least, a very strong presumption against moral facts.

When it comes to evaluating reductive hypotheses in metaphysics, supervenience arguments are the tools of the trade. Jaegwon Kim and Frank Jackson have argued, respectively, that strong and global supervenience are sufficient for reduction, and others have argued that supervenience theses stand in need of the kind of explanation that reductive hypotheses are particularly suited to provide. Simon Blackburn's arguments about what he claims are the specifically problematic features of the supervenience of the moral on the natural have also been (...) influential. But most discussions of these arguments have proceeded under the strong and restrictive assumptions of the S5 modal logic. In this paper we aim to remedy that defect, by illustrating in an accessible way what happens to these arguments under relaxed assumptions and why. The occasion is recent work by Ralph Wedgwood, who seeks to defend non-reductive accounts of moral and mental properties together with strong supervenience, but to evade both the arguments of Kim and Jackson and the explanatory challenge by accepting only the weaker, B, modal logic. In addition to drawing general lessons about what happens to supervenience arguments under relaxed assumptions, our goal is therefore to shed some light on both the virtues and costs of Wedgwood's proposal. (shrink)

In Being Realistic About Reasons T. M. Scanlon argues that particular fact about reasons are explained by contingent non-normative facts together with pure normative principles. A question then arises about the modal status of these pure principles. Scanlon maintains that they are necessary in a sense, and suggests that they are ‘metaphysically’ necessary. I argue that the best view for Scanlon to take, given his other commitments, is that these pure normative principles are metaphysically contingent in some cases and necessary (...) only in a weaker sense. (shrink)

The claim that the normative depends on the non-normative is just as entrenched in metanormative theory as the claim that the normative supervenes on the non-normative. It is widely held to be a genuine truism, a conceptual truth that operates as a constraint on competence with normative concepts. Call it the dependence constraint. I argue that this status is unwarranted. While it is true that the normative is dependent, it is not a genuine truism, or a conceptual truth, that it (...) depends on the nonnormative. I argue for the following inadequacy claim: that when we cull all the normative terms from our language, and so the concepts that they stand for, what we will be left with will not necessarily be sufficient to adequately describe, conceptualize or represent what it is that we are supposed to be making normative judgements in virtue of. This has implications for both ascriptive and metaphysical understandings of the dependence constraint, and the potential to radically reshape the dialectic in metanormative theory. (shrink)

Modern philosophers normally either reject the „divine command theory” of ethics and argue that moral duties are independent of any commands, or make it dependent on God's commands but like Robert Adams modify their theory and identify moral duties in terms of the commands of a loving God. Adams regards this theory as metaphysically necessary. That is, if it is true, it is true in all possible worlds. But Swinburne's position is unprecedented insofar as he regards moral truths as analytically (...) necessary. In this paper Swinburne's argument will be discussed and I will reveal some of the difficulties involved in categorising general moral principles as logical truths. (shrink)

Blackburn argues against naturalistic moral realism. He argues that there is no conceptual entailment from satisfying a naturalistic predicate to satisfying a moral predicate. But the moral is conceptually supervenient on the natural. However, this conjunction of conceptual supervenience with lack of conceptual entailment is something the non-realist can explain, but the realist cannot. I argue first that Blackburn’s best formulation of his challenge is his first one. Subsequently he reformulates it as a demand for a ‘ban on mixed worlds’. (...) Critics have directed their arguments against this formulation but they are ineffective against Blackburn’s first formulation. My second thesis is, even so formulated the realist can meet the challenge. The bare conceptual supervenience of the moral on the natural can be given a realist explanation by understanding names of moral properties as descriptive names of natural properties. (shrink)

I argue that all rights exist by convention. According to my definition, a right exists by convention just in case its justification appeals to the rules of a socially shared pattern of acting. I show that our usual justifications for rights are circular, that a right fulfills my criterion if all possible justifications for it are circular, and that all existing philosophical justifications for rights are circular or fail. We find three non-circular alternatives in the literature, viz. justifications of rights (...) by consequences, by autonomy or by divine commands. I show that all three alternatives fail, and I conclude that all rights exist by convention. This ontological result has a surprising and beneficial consequence. A common argument against conventionalism is that it implies cultural relativism. I finish by showing that the suggested conventionalism is incompatible with cultural relativism. (shrink)

Although Donald Davidson is best known for his account of motivating reasons, towards the end of his life he did write about normative reasons, arguing for a novel form of realism we might call anomalous naturalism: anomalous, because it is not just non-reductive but also non-revisionary, refusing to compromise in any way on the thought that the prescriptive authority of normative reasons is objective and reaches to all possible agents; naturalism, because it still treats normative properties as perfectly ordinary causal (...) properties, and thus avoids many of the epistemological problems that bedevil realisms of the sort recently advanced by Thomas Nagel, Derek Parfit, and T. M. Scanlon. In the first section of the paper, I discuss Davidson’s understanding of objective prescriptivity and one important challenge that it faces. In the second section, I show how an answer to this challenge can be found in Davidson’s holism of the mental. As we shall see, Davidson’s holism of the mental makes the possibility of strongly prescriptive properties much easier to take seriously. In the final section of the paper, I take up various grounds for doubting that such properties could also be causal. (shrink)

Kim argues that weak and global supervenience are too weak to guarantee any sort of dependency. Of the three original forms of supervenience, strong, weak, and global, each commonly wielded across all branches of philosophy, two are thus cast aside as uninteresting or useless. His arguments, however, fail to appreciate the strength of weak and global supervenience. I investigate what weak and global supervenience relations are functionally and how they relate to strong supervenience. For a large class of properties, weak (...) and global supervenience are equivalent to strong supervenience. I then offer a series of arguments showing that it is precisely because of their strength, not their weakness, that both weak and global supervenience are useless in characterizing any dependencies of interest to philosophers. (shrink)

Simon Blackburn’s supervenience argument—focusing on the mysterious “ban on mixed worlds”—is still subject to a variety of conflicting interpretations. In this paper, I hope to provide a defense of the argument that clarifies both the argument and the objections it must overcome. Many of the extant objections, I will argue, fail to engage the argument in its true form. And to counter the more compelling objections, it will be necessary to bring in additional argumentation that Blackburn himself does not clearly (...) provide. One important upshot of this discussion is that moral realism is not the only target of the argument: it raises trouble for a variety of metaethical views wed to realist-friendly construals of moral evaluation. Rightly understood, this argument not only survives the prominent responses, but turns out to be more powerful than his critics and Blackburn himself have recognized. (shrink)

One of the most familiar arguments for expressivist metaethics is the claim that the rival theory, moral realism, cannot provide a satisfying explanation of why moral properties supervene on natural properties. Non-cognitivism, however, has its own problems explaining supervenience. Expressivists try to establish supervenience either by second-order disapproval of type-inconsistent moral evaluations or by pragmatic considerations. But disapproval of inconsistency is merely a contingent attitude that people happen to have; and pragmatic justification does not allow for appraisers to take their (...) own moral attitudes seriously enough. What has been overlooked is a third alternative. The metaethical theory that can best account for supervenience is neither realist nor non-cognitivist but an objectivist version of constructivism. On the constructivist theory, right and wrong are determined by the principles that people would (hypothetically) consent to under ideal conditions. Type-consistency is a required feature of any principles regulating our conduct, if they are to be freely agreed to by ideally rational people. (shrink)

This article focuses on one well-known argument in favor of expressivism and against realism that Shafer-Landau considers, namely Blackburn's supervenience argument. Shafer-Landau believes that he can successfully defend moral realism against Blackburn's argument. I have my doubts about whether this is so.

Supervenience has provided a way for nonreductive materialists to explain how the mental can be physically irreducible but still physically respectable. In recent years, doubts about this research program have emerged from a number of quarters. Consequently, Terence Horgan has argued that nonreductive materialists must appeal to an upgraded "superdupervenience," if supervenience is to do any materialist work. We argue that nonreductive materialism cannot meet this challenge. Superdupervenience is impossible.

Hilary Putnam's Twin Earth thought experiment has come to have an enormous impact on contemporary philosophical thought. But while most of the discussion has taken place within the context of the philosophy of mind and language, Terence Horgan and Mark Timmons (H8cT) have defended the intriguing suggestion that a variation on the original thought experiment has important consequences for ethics.' In a series of papers, they' ve developed the idea of a Moral Twin Earth and have argued that its significance (...) is that it has the resources to undermine naturalistic versions of moral realism.' H8t T don't hold back in their assessment. "Moral Twin.. (shrink)

Supervenience is necessary co-variation between two sets of entities. In the good old days, supervenience was considered a useful philosophical tool with a wide range of applications in the philosophy of mind, metaethics, epistemology, and elsewhere. In recent years, however, supervenience has fallen out of favor, giving place to grounding, realization, and other, more metaphysically “meaty”, notions. The emerging consensus is that there are principled reasons for which explanatory theses cannot be captured in terms of supervenience, or as the slogan (...) goes: “Supervenience Is Nonexplanatory”. While SIN is widely endorsed, it is far from clear what it amounts to and why we should believe it. In this paper, I will distinguish various theses that could be meant by it, and will argue that none of them is both interesting and plausible: on some interpretations of ‘explanatory’, we have no reason to believe that supervenience is unexplanatory, while on other interpretations, supervenience is indeed unexplanatory, but widely accepted textbook cases of explanatory relations come out as unexplanatory, too. This result raises doubts as to whether there is any interesting sense in which SIN is true, and suggests that the contemporary consensus about supervenience is mistaken. (shrink)

In the first part ("Determination"), I consider different notions of determination, contrast and compare modal with non-modal accounts and then defend two a-modality theses concerning essence and supervenience. I argue, first, that essence is a a-modal notion, i.e. not usefully analysed in terms of metaphysical modality, and then, contra Kit Fine, that essential properties can be exemplified contingently. I argue, second, that supervenience is also an a-modal notion, and that it should be analysed in terms of constitution relations between properties. (...) In the second part ("A Theory of Truthmaking"), I first review the literature on ontological commitment, and argue that the notion of truthmaking is better suited to play its explanatory rôle. I then argue that we should take truthmaker theory seriously, and that we should provide actual truthmakers for all truths there are. In the last chapter of this part, I review Armstrong's truthmaker theories and argue that they are unsatisfactory. I generalise my criticism to an argument against truthmaker necessitarianism, the view that truthmakers necessarily make true the truths they are truthmakers of. In the third part ("Properties and their Kind(s)"), I discuss qualitative determination. I present and endorse the truthmaker argument for universals, and defend universalism against friends of tropes, states of affairs and facts. I then give a novel characterisation of the important class of intrinsic properties, building on Lewis' work. With a workable notion of intrinsicness at hand, I argue that relations are ontologically – but not "ideologically" – dispensable: qualitative determination in general is a matter of intrinsic structure. In the future, I plan to add two parts and to publish my thesis as a book: In the fourth part ("Exemplification"), I argue for the existence of an exemplification relation tying universals and particulars together. I derive theoretical benefits from this relation by providing adverbialist theories of modality and tense and identify exemplification with a type of parthood. In the fifth part ("Qua qua qua"), I investigate the curious and interesting ontological category of so-called "qua-objects" (Picasso-as-a-painter, for example) and argue that they exist, are not identical with transworld indidivuals or modal parts and that they provide (contingent) truthmakers for all true predications. (shrink)

J. L. Mackie argued that if there were objective moral properties or facts, then the supervenience relation linking the nonmoral to the moral would be metaphysically queer. Moral realists reply that objective supervenience relations are ubiquitous according to contemporary versions of metaphysical naturalism and, hence, that there is nothing especially queer about moral supervenience. In this paper we revive Mackie's challenge to moral realism. We argue: (i) that objective supervenience relations of any kind, moral or otherwise, should be explainable rather (...) than sui generis; (ii) that this explanatory burden can be successfully met vis-à-vis the supervenience of the mental upon the physical, and in other related cases; and (iii) that the burden cannot be met for (putative) objective moral supervenience relations. (shrink)

It is widely held, even among nonnaturalists, that the moral supervenes on the natural. This is to say that for any two metaphysically possible worlds w and w′, and for any entities x in w and y in w′, any isomorphism between x and y that preserves the natural properties preserves the moral properties. In this paper, I put forward a conceivability argument against moral supervenience, assuming non-naturalism. First, I argue that though utilitarianism may be true, and the trolley driver (...) is permitted to kill the one to save the five, there is a conceivable scenario that is just like our world in all natural respects, yet at which deontology is true, and the trolly driver is not permitted to kill the one to save the five. I then argue that in the special case of morality, it is possible to infer from the conceivability of such a scenario to its possibility. It follows that supervenience is false. (shrink)

To enhance the plausibility of naturalistic moral realism, David Copp develops an argument from epistemic defeaters aiming to show that strongly a priori synthetic moral truths do not exist. In making a case for the non-naturalistic position, I locate Copp’s account within the wider literature on peer disagreement; I identify key points of divergence between Copp’s doctrine and conciliatorist doctrines; I introduce the notion of ‘minimal moral competence’; I contend that some plausible benchmarks for minimal moral competence are grounded in (...) substantive moral considerations; and I discuss two forms of spinelessness that Copp’s moral naturalism could result in. (shrink)

This essay explains for a general philosophical audience the central issues and strategies in the contemporary moral realism debate. It critically surveys the contribution of some recent scholarship, representing expressivist and pragmatist nondescriptivism, subjectivist and nonsubjectivist naturalism, nonnaturalism and error theory. Four different faces of ‘ moral realism ’ are distinguished: semantic, ontological, metaphysical, and normative. The debate is presented as taking shape under dialectical pressure from the demands of capturing the moral appearances and reconciling morality with our understanding of (...) the mind and world. (shrink)

The paper describes the problem for robust moral realism of explaining the supervenience of the moral on the non-moral, and examines five objections to the argument: The moral does not supervene on the descriptive, because we may owe different obligations to duplicates. If the supervenience thesis is repaired to block, it becomes trivial and easy to explain. Supervenience is a moral doctrine and should get an explanation from within normative ethics rather than metaethics. Supervenience is a conceptual truth and should (...) be explained by the nature of our concepts rather than by a metaphysical theory. The moral does not supervene on the descriptive, because moral principles are not metaphysically necessary. It concludes that none of these objections is successful, so Robust Realists do have an explanatory debt to worry about. (shrink)