Sociologists often ask why particular groups of people have the moral views that they do. I argue that sociology’s empirical research on morality relies, implicitly or explicitly, on unsophisticated and even obsolete ethical theories, and thus is based on inadequate conceptions of the ontology, epistemology, and semantics of morality. In this article I address the two main problems in the sociology of morality: (1) the problem of moral truth, and (2) the problem of value freedom. I identify two ideal–typical approaches. (...) While the Weberian paradigm rejects the concept of moral truth, the Durkheimian paradigm accepts it. By contrast, I argue that sociology should be metaphysically agnostic, yet in practice it should proceed as though there were no moral truths. The Weberians claim that the sociology of morality can and should be value free; the Durkheimians claim that it cannot and it should not. My argument is that, while it is true that factual statements presuppose value judgments, it does not follow that sociologists are moral philosophers in disguise. Finally, I contend that in order for sociology to improve its understanding of morality, better conceptual, epistemological, and methodological foundations are needed. (shrink)

This article raises a problem for Cornell varieties of moral realism. According to Cornell moral realists, we can know about moral facts just as we do the empirical facts of the natural sciences. If this is so, it would remove any special mystery that is supposed to attach to our knowledge of objective moral facts. After clarifying the ways in which moral knowledge is to be similar to scientific knowledge, I claim that the analogy fails, but for little-noticed reasons. A (...) preliminary conclusion of the article will be that this positive comparison to scientific knowledge hurts, rather than helps, the realist position. Yet, rather than spell trouble for moral realism altogether, I suggest that the apparent failure of Cornell realist moral epistemology points to a better way forward for moral realism. (shrink)

Intuitions are widely assumed to play an important evidential role in ethical inquiry. In this paper I critically discuss a recently influential claim that the epistemological credentials of ethical intuitions are undermined by their causal pedigree and functional role. I argue that this claim is exaggerated. In the course of doing so I argue that the challenge to ethical intuitions embodied in this claim should be understood not only as a narrowly epistemological challenge, but also as a substantially ethical one. (...) I argue that this fact illuminates the epistemology of ethical intuitions. (shrink)

The paper reconstructs Moore's Open Question Argument (OQA) and discusses its rise and fall. There are three basic objections to the OQA: Geach's point, that Moore presupposes that ?good? is a predicative adjective (whereas it is in fact attributive); Lewy's point, that it leads straight to the Paradox of Analysis; and Durrant's point that even if 'good' is not synonymous with any naturalistic predicate, goodness might be synthetically identical with a naturalistic property. As against Geach, I argue that 'good' has (...) both predicative and attributive uses and that in moral contexts it is difficult to give a naturalistic account of the attributive 'good'. To deal with Lewy, I reformulate the OQA. But the bulk of the paper is devoted to Durrant's objection. I argue that the post-Moorean programme of looking for synthetic identities between moral and naturalistic properties is either redundant or impossible. For it can be carried through only if 'good' expresses an empirical concept, in which case it is redundant since naturalism is true. But 'good' does not express an empirical concept (a point proved by the reformulated OQA). Hence synthetic naturalism is impossible. I discuss direct reference as a possible way out for the synthetic naturalist and conclude that it will not work. The OQA may be a bit battered but it works after a fashion. (shrink)

Suppose that realism about values is true, that there are objects and states of affairs which are intrinsically valuable, that some objects and states of affairs are intrinsically more valuable than others and that some objects and states of affairs are intrinsically valuable for Sam, and others for Maria.

This paper explores the relationships that various applied ethics bear to each other, both in particular disciplines and more generally. The introductory section lays out the challenge of coming up with such an account and, drawing a parallel with the philosophy of science, offers that applied ethics may either be unified or disunified. The second section develops one simple account through which applied ethics are unified, vis-à-vis ethical theory. However, this is not taken to be a satisfying answer, for reasons (...) explained. In the third section, specific applied ethics are explored: biomedical ethics; business ethics; environmental ethics; and neuroethics. These are chosen not to be comprehensive, but rather for their traditions or other illustrative purposes. The final section draws together the results of the preceding analysis and defends a disunity conception of applied ethics. (shrink)

Moral principles play important roles in diverse areas of moral thought, practice, and theory. Many who think of themselves as ‘moral generalists’ believe that moral principles can play these roles—that they are capable of doing so. Moral generalism maintains that moral principles can and do play these roles because true moral principles are statements of general moral fact (i.e. statements of facts about the moral attributes of kinds of actions, kinds of states of affairs, etc.) and because general moral facts (...) explain particular moral facts (i.e. facts about the moral attributes of particulars). Moral holism maintains that what is a moral reason to φ in one case may not be one in another, and may even be a moral reason not to φ given suitable circumstances. Some ‘moral particularists’ maintain that moral holism motivates scepticism about the existence of and need for moral principles, along with scepticism about the viability of principle-based approaches to ethics and moral theory. But I argue that moral holism is itself a form of moral generalism, one that takes facts about the right- and wrong-making powers of (generic) moral factors to explain certain particular moral facts—namely, the rightness and wrongness of particular actions. I also argue that a moral-theoretic version of dispositionalism—the view that dispositions, powers, or capacities are the fundamental units of explanation—explains both why moral holism is true and why moral generalism is true. (shrink)

Despite having occupied a peripheral position in contemporary metaethics, moral nonnaturalism has recently experienced a revival of sorts. But what is moral nonnaturalism? And what is there to be said in favor of it? In this article, I address these two questions. In the first place, I offer an account of what moral nonnaturalism is. According to the view I propose, nonnaturalism is better viewed not as a position, but as a theoretical stance. And, second, I critically engage with three (...) recent arguments for moral nonnaturalism offered by Russ Shafer-Landau, Kit Fine, and Jean Hampton, respectively. (shrink)

This dissertation is a contribution to the field of empirically informed metaethics, which combines the rigorous conceptual clarity of traditional metaethics with a careful review of empirical evidence. More specifically, this work stands at the intersection of moral psychology, moral epistemology, and philosophy of action. The study comprises six chapters on three distinct (although related) topics. Each chapter is structured as an independent paper and addresses a specific open question in the literature. The first part concerns the psychological features and (...) cognitive function of moral intuition. Chapter 1 (“Moral intuition, strength, and metacognition”) is focused on the concept of intuitive strength, which is one of the defining features of moral intuition. I provide a metacognitive account of intuitive strength and show why such a view is preferable to emotional or quasi-perceptual accounts. Then, in Chapter 2 (“Dual process reflective equilibrium”), I will discuss the interplay between intuition and reflection in moral reasoning. I will contend that the influential “default-interventionist” model of reasoning, theorized by Greene, is insufficiently supported by the evidence. In light of some recent studies, I outline an account of moral reasoning in which intuition and reflection are not in conflict but cooperate to reach a reflective goal. I call this model dual process reflective equilibrium. The aim of the first part is descriptive, i.e., it argues for an accurate understanding of moral intuition and reasoning in light of the available empirical evidence. In contrast, the second part addresses a normative question: is a subject epistemically justified in forming a belief on the basis of a moral intuition? Skeptics of moral intuition argue that accepting moral intuitions should be the exception rather than the rule to the extent that epistemically defective processes determine the content of moral intuitions. Chapter 3 (“Moral intuitionism and the reliability challenge”) introduces the recent empirical challenges to the reliability of moral intuitions and elaborates a promising strategy for defending intuitionism. In short, I consider whether subjects can track the reliability of their intuitions with their confidence. In Chapter 4 (“The argument from limited cognitive resources”), I evaluate a different strategy to defend moral intuitionism. Specifically, I develop an argument according to which accepting moral intuitions is legitimate because it is the most rational option that a subject has, given her limited resources. The third and final part of the dissertation concerns the role of moral intuitions in action. The influence of automatic processes on moral conduct raises different challenges to moral philosophy. The first challenge is to explain how a subject can be motivated by certain values without the mental effort of deliberation. Chapter 5 (“Caring, moral motivation, and automatic conduct”) tackles this issue. Chapter 6 (“Moral sensitivity as skillful automaticity”) aims to explain how moral agents can be sensitive to good reasons through automatic mental processes. (shrink)

Ratio, Volume 34, Issue 4, Page 303-311, December 2021.

Can there be an objective morality without God? Derek Parfit argues that it can and offers a theory of morality that is neither theistic nor naturalistic. This book provides a critical assessment of Parfit's metaethical theory. Jakobsen identifies some problems in Parfit’s theory – problems concerning moral normativity, the ontological status of morality, and evolutionary influence on our moral beliefs – and argues that theological resources can help solve them. By showing how Parfit’s theory may be improved by the help (...) of theology, Jakobsen demonstrates the relevance of theology in philosophical and metaethical debates and argues that Christian theism offers a better explanation of morality than what Parfit’s non-naturalism does. (shrink)

In the recent metaethical literature there has been significant interest in the prospects for what I am denoting ‘Perceptual Intuitionism’: the view that normal ethical agents can and do have non-inferential justification for first-order ethical beliefs by having ethical perceptual experiences, e.g., Cullison 2010, McBrayer 2010, Vayrynen 2008. If true, it promises to constitute an independent a posteriori intuitionist epistemology, providing an alternative to intuitionist accounts which posit a priori intuition and/or emotion as sources of non-inferentially justified ethical beliefs. As (...) it is formulated, it is plausible that a necessary con- dition for the view is the truth of Ethical Perception: normal ethical agents can and do have perceptual experiences as of the instantiation of ethical properties. In this paper a sophisticated and promising account of Ethical Perception is offered. Extant objections are shown to fail. However, it will be argued that it is far from obvious that the account of Perceptual Intuitionism which emerges constitutes an independent alternative to other intuitionist accounts. This is because we have reason to think that ethical perceptual experience may be epistemically dependent on other epistemic sources, e.g. a priori intuition or emotion. (shrink)

This thesis examines the little-known phenomenological ethical theory of Max Scheler, discussed in his Formalism in Ethics and Non-Formal Ethics of Values and The Nature of Sympathy, also bringing in various other complementary philosophers. It argues that Scheler’s theory, when supplemented with complementary ideas, is superior to those offered by contemporary analytic intuitionism and other meta-ethical theories. It argues that a theory of pluralist emotive intuitionism provides a better description of both our experience of ethical value and the logical requirements (...) for the ethical knowledge presumed by that experience. This thesis places Scheler’s theory in the context of ethical intuitionism up until the present. It considers why intuitionism has been generally rejected, looking at outstanding philosophical questions facing ethical intuitionism and previous attempted answers, and discussing current theories of analytic ethical intuitionism and their flaws. It explains the significant elements of Scheler’s ethical theory and how it can be understood in its phenomenological context. To demonstrate how Scheler’s material intuitionism is better than current theories of rationalist intuitionism, and other meta-ethical alternatives, this thesis looks at two main groups of issues. Firstly, the epistemological issues raised by Scheler’s theory and how it offers a possible solution to the problem of ethical knowledge, along with a brief consideration of ontological issues. Secondly, normative issues raised by Scheler’s theory: major issues on normative judgement raised but not answered by Scheler’s theory and, following this, a chapter dedicated to Scheler’s theory of ‘persons’, particularly with reference to Emmanuel Levinas. It concludes that an adapted Scheleran theory of ethical intuitionism can be superior to contemporary theories. It explains how the fundamental features of ethical experience may be epistemologically and phenomenologically justified based on objective values. It provides better responses to standard problems raised against intuitionism while also providing a natural explanation for a wider range of moral phenomena than standard meta-ethical alternatives. This demonstrates its superior explanatory power and provides strong arguments for its value as an over-arching meta-ethical theory. (shrink)

Moral disagreement is widely held to pose a threat for metaethical realism and objectivity. In this paper I attempt to understand how it is that moral disagreement is supposed to present a problem for metaethical realism. I do this by going through several distinct (though often related) arguments from disagreement, carefully distinguishing between them, and critically evaluating their merits. My conclusions are rather skeptical: Some of the arguments I discuss fail rather clearly. Others supply with a challenge to realism, but (...) not one we have any reason to believe realism cannot address successfully. Others beg the question against the moral realist, and yet others raise serious objections to realism, but ones that—when carefully stated—can be seen not to be essentially related to moral disagreement. Arguments based on moral disagreement itself have almost no weight, I conclude, against moral realism. (shrink)

Metaethics, understood as a distinct branch of ethics, is often traced to G. E. Moore's 1903 classic, Principia Ethica. Whereas normative ethics is concerned to answer first order moral questions about what is good and bad, right and wrong, metaethics is concerned to answer second order non-moral questions about the semantics, metaphysics, and epistemology of moral thought and discourse. Moore has continued to exert a powerful influence, and the sixteen essays here represent the most up-to-date work in metaethics after, and (...) in some cases directly inspired by, the work of Moore. (shrink)

Debates about the ethics of health care and medical research in contemporary pluralistic democracies often arise partly from competing religious and secular values. Such disagreements raise challenges of balancing claims of religious liberty with claims to equal treatment in health care. This paper proposes several mid-level principles to help in framing sound policies for resolving such disputes. We develop and illustrate these principles, exploring their application to conscientious objection by religious providers and religious institutions, accommodation of religious priorities in biomedical (...) research, and treatment of patients’ religious views in doctor–patient encounters. Given that no sound set of guiding principles yields precise solutions for every policy dispute, we explore how morally sound democracies might deliberatively resolve such policy issues, following our proposed principles. Taken together and carefully interpreted, these principles may help in guiding difficult decision making in the indefinitely large realm where government, medical providers, and patients encounter problems concerning religion and medicine. (shrink)

The problem of act individuation is a debate about the identity conditions of human acts. The fundamental question about act individuation is: how do we distinguish between actions? Three views of act individuation have dominated the literature. First, Donald Davidson and G.E.M. Anscombe have argued that a number of different descriptions refer to a single act. Second, Alvin Goldman and Jaegwon Kim have argued that each description designates a distinct act. Finally, Irving Thalberg and Judith Jarvis Thomson have averred that (...) some acts are sequences of causally related events, which include both a primitive bodily action and some of its effects. All of these accounts have assumed that a simple invariantist account of act individuation captures how ordinary people distinguish between acts. For my dissertation, I devised an experiment to test the action theorists' assumptions. My data show that people's intuitions seem to depend on the valence of the consequences of the action under consideration. So, an invariantist account is not possible. In light of the empirical results, I argue that if we seek a folk account of act individuation, then that account should be able to explain the variability that seems to be present in people's intuitions about different cases. (shrink)

The ‘standard interpretation’ of John Taurek’s argument in ‘Should the Numbers Count?’ imputes two theses to him: first, ‘numbers scepticism’, or scepticism about the moral force of an appeal to the mere number of individuals saved in conflict cases; and second, the ‘equal greatest chances’ principle of rescue, which requires that every individual has an equal chance of being rescued. The standard interpretation is criticized here on a number of grounds. First, whilst Taurek clearly believes that equal chances are all-important, (...) he actually argues for a position weaker than the equal greatest chances principle. Second, the argument Taurek gives for the importance of equal chances ought to commit him to being more hospitable to the significance of numbers than he seems to be. Third, and as a result, Taurek should not have dismissed the significance of numbers but embraced a form of pluralism instead. Fourth, this result should be welcomed, because pluralism is more plausible than either the equal greatest chances principle or the saving the greater number principle. (shrink)

This paper defends a novel account of how to determine the intrinsic value of possible worlds. Section 1 argues that a highly intuitive and widely accepted account leads to undesirable consequences. Section 2 takes the first of two steps towards a novel account by clarifying and defending a view about value-contribution that is based on some of W. D. Ross’ claims about the value of pleasure. Section 3 takes the second step by clarifying and defending a view about value-suppression that (...) is based on Ross’ claims about the interplay between prima-facie duties. Section 4 states and defends the account that I call Rossian Totalism. According to this account, the atoms of intrinsic value within a world only sometimes contribute their intrinsic value to the value of that world. (shrink)

Recently, companions in guilt strategies have garnered significant philosophical attention as a response to arguments for moral error theory, the view that there are no moral facts and that our moral beliefs are thus systematically mistaken. According to Cuneo (The normative web: an argument for moral realism, Oxford University Press, Oxford, 2007), Das (Philos Q 66:152–160, 2016; Australas J Philos 95(1):58–69, 2017), Rowland (J Ethics Soc Philos 7(1):1–24, 2012; Philos Q 66:161–171, 2016) and others, epistemic facts would be just as (...) metaphysically problematic (or ‘guilty’) as moral facts. But since epistemic error theory is implausible, arguments for moral error theory prove too much and should be rejected. My aim is to argue that the success of this strategy is limited. In particular, the companions in guilt response fails against error-theoretic arguments motivated by concerns about explanatory dispensability, as recently developed by Joyce (The evolution of morality, MIT press, Bradford, 2005) and Olson (Moral error theory: history, critique, defence, Oxford University Press, Oxford, 2014: Ch. 7). To succeed, the response would require a prima facie plausible argument to the effect that epistemic facts are metaphysically dubious because they, too, are explanatorily dispensable. But, as I show, any such argument proves self-effacing: its premise commits us to believing in epistemic facts, while its conclusion forces us to deny their existence. Consequently, companions in guilt strategies don’t offer a panacea against arguments for moral error theory. (shrink)

This article explores, comparatively and critically, Sidgwick’s and Rawls’s reasons for rejecting desert as a principle of distributive justice. Their ethical methods, though not identical, each re...

Champions of virtue ethics frequently appeal to moral perception: the notion that virtuous people can “see” what to do. According to a traditional account of virtue, the cultivation of proper feeling through imitation and habituation issues in a sensitivity to reasons to act. Thus, we learn to see what to do by coming to feel the demands of courage, kindness, and the like. But virtue ethics also claims superiority over other theories that adopt a perceptual moral epistemology, such as intuitionism (...) – which John McDowell criticizes for illicitly “borrow[ing] the epistemological credentials” of perception. In this paper, I suggest that the most promising way for virtue ethics to use perceptual metaphors innocuously is by adopting a skill model of virtue, on which the virtues are modeled on forms of practical know-how. Yet I contend that this model is double-edged for virtue ethics. The skill model belies some central ambitions and dogmas of the traditional view, especially its most idealized claims about virtue and the virtuous. While this may be a cost that its champions are unprepared to pay, I suggest that virtue ethics would do well to embrace a more realistic moral psychology and a correspondingly less sublime conception of virtue. (shrink)

This paper provides a novel critique of Walter Sinnott-Armstrong’s influential argument against epistemological moral intuitionism, the view that some people are non-inferentially justified in believing some moral propositions. At the beginning of the twenty-first century, this view experienced a revival, which coincided with an increasing interest in empirical research on intuitions. The results of that research are seen by some as casting serious doubt on the reliability of our moral intuitions. According to Sinnott-Armstrong, empirical evidence shows that our moral beliefs (...) have a high error rate in general, which creates a need for inferential confirmation for every single moral belief. His argument involves the problematic assumption that it is reasonable for informed moral believers to ascribe a high probability of error to every particular moral belief unless the believer has some special evidence that this particular moral belief belongs to a class that has a lower probability of error than the class of moral beliefs. Focussing on the non-moral example that Sinnott-Armstrong uses in the latest reformulation of his argument, the “Californian wine example”, I argue that apart from exceptional circumstances, the description of moral agents as ascribing correctness probabilities to their moral beliefs is odd, ERROR reveals an awkward picture of how agents relate to their moral beliefs and ERROR is problematic from the perspective of moral competence. This critique goes deeper than the worries raised by other critics to earlier versions of the argument, and part of it applies to moral intuitionism as well. (shrink)

Introduction: characterizing ethical realismIt is useful to begin a survey of recent work on ethical realism with a look at current disputes over what makes a theory of ethics count as ‘realist’ in the first place. Nearly all characterizations of ethical realism include some version of the following two core claims: Ethical discourse is assertoric and descriptive: ethical claims purport to state ethical facts by attributing ethical properties to people, actions, institutions, etc., and are thus true or false depending on (...) whether their descriptions of things are accurate or not . 1 At least some ethical claims, when literally construed, are true in the above sense.Sayre-McCord maintains that these two conditions are necessary and sufficient to characterize ethical realism; others argue that further conditions must be added to yield ethical realism, or at least ‘paradigmatic’ or ‘robust’ ethical realism. Before turning to that, however, it is worth noting that some have recently denied that the above two conditions are even necessary for ethical realism. In probing new work on metaethical taxonomy, Miller argues that the core of ethical realism is simply the metaphysical commitment to objective ethical properties and facts, which is strictly independent of the semantic claims above. If one holds that there are objective facts about the wrongness of slavery, for example, then one ought to count as an ethical realist regardless of whatever views one might hold about the semantics of the contingent forms of discourse that have evolved among language users. Even if our ethical discourse turns out primarily to express conative states ), or all moral claims turn out to be false because …. (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)

This dissertation investigates the plausibility of metaethical relativism, or more specifically, what I call “moral truth-value relativism”: the idea that the truth of a moral statement or belief depends on who utters or has it, or who assesses it. According to the most prevalent variants of this view in philosophical literature – “standard relativism” – the truth-values are relative to people’s moralities, often understood as some subset of their affective or desirelike attitudes. Standard relativism has two main contenders: absolutism – (...) the view that the truth-values of moral statements and beliefs do not vary in that way – and non-cognitivism – the view that moral judgements do not have truth-values, since they express affective or desire-like attitudes rather than beliefs. Almost the entire dissertation concerns the plausibility of standard relativism in contrast to absolutism. Part 1 examines first the two main arguments for standard relativism: that it accounts for the connection between moral judgements and motivation (chapter 2), and for the prevalence of diversity of moral opinion (chapter 3). Then the most common objection is considered: that it is inconsistent with the existence of genuine moral disagreements (chapter 4). I argue that these arguments are inconclusive. Both relativism and absolutism can account for the features discussed. Part 2 focuses on the fact that different people have different strongly held intuitions about the relative or absolute nature of morality. I argue that given a common methodological approach in philosophy and metaethics, which takes such intuitions as evidence of correct analyses, this difference in intuitions suggests that neither a relativist nor absolutist analysis can be correct for everyone’s moral judgements. I argue that this result holds both given semantic internalism (chapter 6) and given semantic externalism (chapter 7). To get one single analysis of everyone’s moral judgements we would have to abandon the intuitionbased methodology. In chapter 8, however, I argue that we can maintain this methodology if we accept analysis pluralism, the view that different analyses hold for different people’s moral judgements. (shrink)

In this dissertation I examine the topics of ethics, religion, and their relationship in the work of Charles Taylor. I take Taylor's attempt to confront modern disenchantment by seeking a kind of re-enchantment as my guiding thread. Seeking re-enchantment means, first of all, defending an `engaged realist' account of strong evaluation, i.e., qualitative distinctions of value that are seen as normative for our desires. Secondly, it means overcoming self-enclosure and achieving self-transcendence, which I argue should be understood in terms of (...) transcending a `lower' mode of selfhood for a `higher' one in concern for `strong goods'. One of the main issues that Taylor raises is whether re-enchantment requires theism for its full adequacy. He advances - often as `hunches' - controversial claims regarding the significance of theism (1) for defending strong evaluative realism and (2) for motivating an ethic of universal human concern. I seek to fill out his hunches in terms of a theistic teleological perspective that is centered on the `telos of communion'. I argue that such a view is important for overcoming the problem of what Bernard Williams calls the `radical contingency' of ethical beliefs, which seems to undermine their normative authority. However, I argue that if a non-theistic view of cosmic purpose (e.g., Thomas Nagel's view) can be regarded as a viable option, then it could also help to address this problem and support a kind of re-enchantment. Taylor also advances the controversial view that (3) there is an ineradicable draw to `transcendence' in human life in connection to the quest for the meaning of life. Here he opposes certain mainstream theories of secularization that see it as a process involving the ineluctable fading away of the relevance of religion. I seek to fill out and defend Taylor's view in this matter. Besides providing a reading of Taylor's work as a whole and advancing further some of the issues he raises, I also examine his general evaluative framework based on his account of strong evaluation. In doing so I show how he provides a distinct and important perspective among contemporary moral philosophers. (shrink)

My aim is to challenge recent attempts at reconciling moral realism and naturalism by pushing ethical naturalists into a dilemma. According to one horn of the dilemma, ethical naturalists must either build unique facts and properties about divergent social structures into their subvenient sets of natural facts and properties, and so jeopardize the objectivity of moral truths, or insist, in the face of all possible worlds in which people have different moral beliefs than ours, that they are all mistaken—this despite (...) the fact that the belief-forming mechanism responsible for their moral beliefs was never concerned with the truth of those beliefs in the first place. This will bring me to suggest that moral properties might only weakly supervene upon natural phenomena. But, according to the other horn of the dilemma, weak supervenience is a defeater for moral knowledge. (shrink)