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)

Many philosophers and psychologists have thought that people untutored in philosophy are moral realists. On this view, when people make moral judgments, they interpret their judgments as tracking universal, objective moral facts. But studies of folk metaethics have demonstrated that people have a mix of metaethical attitudes. Sometimes people think of their moral judgments as purely expressive, or as tracking subjective or relative moral facts, or perhaps no facts at all. This paper surveys the evidence for folk metaethical pluralism and (...) argues for an explanation of this mix of folk metaethical attitudes: without philosophical education, these attitudes are typically caused by factors that are insensitive to their truth. Moreover, unless they can be justified by other means, metaethical attitudes with this etiology are, as a result, irrational, and ought not be used as evidence for or against moral realism. (shrink)

Viewed in its entirety, moral philosophizing, and the moral behavior of people throughout history, presents a curious puzzle. On the one hand, interpersonal duties display a remarkably stable core content: morality the world over enjoins people to keep their word; refrain from violence, theft and cheating; and help those in need. On the other hand, the asserted motives that drive people’s moral actions evince a dazzling diversity: from empathy or sympathy, to practical or prudential reason, to custom and honor, cultural (...) identity, excellence and independence, faith and spirituality, narrative and beauty, and more besides. I term this twin phenomenon—a core of fixed moral duties driven by diverse motives—“moral motive pluralism.” In this article, I marshal evidence to show the prevalence of the phenomenon. Contrary to widespread assumptions, across generations and cultures, diverse motives drive different people to perform their moral duties. But despite this diversity, each different motive impels conscientious compliance with the same core moral duties. I argue this phenomenon undermines key types of evidence commonly employed to justify popular moral philosophies, and provides us with reason to seriously consider certain sorts of ethical theories—especially “functionalist” accounts of morality. (shrink)

SummaryThis paper addresses the question of what scientific realism implies and what it does not when it is articulated so as to provide the best defense against plausible philosophical alternatives. A summary is presented of “abductive” arguments for scientific realism, and of the epistemological and semantic conceptions upon which they depend. Taking these arguments to be the best current defense of realism, it is inquired what, in the sense just mentioned, realism implies and what it does not. It is concluded (...) that realism implies the strong rejection of epistemological foundationalism, a non‐Humean conception of causation and of explanation, and a causal rather than conceptual account of the unity of natural definitions. It is denied that realism implies bivalence or the existence of one true theory, one preferred vocabulary or one distinctly privileged science. It is further denied that realism implies that there are no unrecognized conventional aspects to scientific theorizing and it is denied that realism implies that scientists routinely do good experimental metaphysics. (shrink)

0.0. Theistic Ethics as a Challenge and a Diagnostic Tool. Naturalistic conceptions in metaethics come in many varieties. Many philosophers who have sought to situate moral reasoning in a naturalistic metaphysical conception have thought it necessary to adopt non-cognitivist, prescriptivist, projectivist, relativist, or otherwise deflationary conceptions. Recently there has been a revival of interest in non-deflationary moral realist approaches to ethical naturalism. Many non-deflationary approaches have exploited the resources of non-empiricist “causal” or “naturalistic” conceptions of reference and of kind definitions (...) in service of the “naturalistic” metaphilosophical conception that substantive moral questions, and questions about the metaphysics of morals, are broadly a posteriori questions, somewhat analogous to scientific questions, and are not amenable to a priori resolution by “conceptual analysis.”. (shrink)

3.0. Well-being as a Challenge to Naturalism. In Chapter Three Adams discusses and criticizes those accounts of a person’s well being which characterize it in terms of counterfactuals regarding her actual desires and preferences. These criticisms are important for the question of ethical naturalism because any plausible naturalist position will have to portray a person’s well-being as somehow or other supervening on features of her psychology and her environment. The sorts of analyses Adams criticizes are the most prominent analyses consistent (...) with this constraint, so it is important to see whether or not Adams’ criticisms of them undermine the prospects for ethical naturalism generally. (shrink)

0.0. Theistic Ethics as a Challenge and a Diagnostic Tool. Naturalistic conceptions in metaethics come in many varieties. Many philosophers who have sought to situate moral reasoning in a naturalistic metaphysical conception have thought it necessary to adopt non-cognitivist, prescriptivist, projectivist, relativist, or otherwise deflationary conceptions. Recently there has been a revival of interest in non-deflationary moral realist approaches to ethical naturalism. Many non-deflationary approaches have exploited the resources of non-empiricist “causal” or “naturalistic” conceptions of reference and of kind definitions (...) in service of the “naturalistic” metaphilosophical conception that substantive moral questions, and questions about the metaphysics of morals, are broadly a posteriori questions, somewhat analogous to scientific questions, and are not amenable to a priori resolution by “conceptual analysis.”. (shrink)

3.0. Well-being as a Challenge to Naturalism. In Chapter Three Adams discusses and criticizes those accounts of a person’s well being which characterize it in terms of counterfactuals regarding her actual desires and preferences. These criticisms are important for the question of ethical naturalism because any plausible naturalist position will have to portray a person’s well-being as somehow or other supervening on features of her psychology and her environment. The sorts of analyses Adams criticizes are the most prominent analyses consistent (...) with this constraint, so it is important to see whether or not Adams’ criticisms of them undermine the prospects for ethical naturalism generally. (shrink)

Here I discuss the conceptual structure and core semantic commitments of reason-involving thought and discourse needed to underwrite the claim that ethical normativity is not uniquely queer. This deflates a primary source of ethical scepticism and it vindicates so-called partner in crime arguments. When it comes to queerness objections, all reason-implicating normative claims—including those concerning Humean reasons to pursue one's ends, and epistemic reasons to form true beliefs—stand or fall together.

After offering a characterization of what unites versions of ‘expressivism’, we highlight a number of dimensions along which expressivist views should be distinguished. We then separate four theses often associated with expressivism – a positive expressivist thesis, a positive constitutivist thesis, a negative ontological thesis, and a negative semantic thesis – and describe how traditional expressivists have attempted to incorporate them. We argue that expressivism in its traditional form may be fatally flawed, but that expressivists nonetheless have the resources for (...) preserving what is essential to their view. These resources comprise a re-configuring of expressivism, the result of which is the view we call ‘neo-expressivism’. After illustrating how the neo-expressivist model works in the case of avowals and ethical claims, we explain how it avoids the problems of traditional expressivism. (shrink)

Reductionist forms of moral realism, such as naturalist realism, are often thought immune to epistemological objections that have been raised against nonnaturalist realism in the form of reliability worries or evolutionary debunking arguments. This article establishes that reductionist realist views can only explain the reliability of our moral beliefs at the cost of incurring repugnant first-order conclusions.

I outline a theory of moral motivation which is compatible with the metaphysical claims of strong emotionism—a sentimentalist account of morality first outlined by Jesse Prinz and supported by myself which construes moral concepts and properties as a subset of emotion-dispositional properties. Given these claims, it follows that sincere moral judgements are necessarily motivating in virtue of their emotional constitution. I defend an indefeasible version of judgement motivational internalism which takes into consideration both positively and negatively valenced affective states and (...) how they promote both approach and avoidance motivation, respectively. On this view, in making sincere moral judgements agents are antecedently motivated by standing Desires to avoid or approach the stimuli picked out by their judgements. I also defend internalism against the objections from defeating circumstances and amoralists. As regards the former, I claim that the tendency of philosophers to frame the motivation debate in terms of positive moral judgements makes the argument from defeating circumstances appear more plausible than it is; as regards the latter, I claim the amoralist argument only has force if it is empirically well supported and that psychological data has hitherto been unconvincing. (shrink)

A posteriori Moral Naturalism posits a posteriorimoral/naturalistic identities. Versions of this view thatposit necessary identities purport to rely on theKripke/Putnam doctrine of scientific essentialism.Versions that posit only contingent identities requirethat moral terms are non-rigid designators. I argue thatmetaethics does not fall within the scope of scientificessentialism and that moral terms are not non-rigid designators.

This paper seeks to utilize mathematical methods to formally define and analyze the metaethical theory that is ethical reductionism. In contemporary metaethics, realist-antirealist debates center on the ontology of moral properties. Our research reflects an innovative methodology using methods from Graph Theory to clarify a debated position of Meta-Ethics, previously encumbered by intrinsic vagueness and ambiguity. We employ rigorous mathematical formalism to symbolize, parse, and thus disambiguate, particular philosophical questions regarding ethical ontological materialism of the reductionist variety. In this paper, (...) we seek to revisit the once vexed question regarding the multiple-realizability of moral properties by employing the mathematical machinery of hypergraphs and category theory. The utilization of Mathematical formalism offers explanatory flexibility specifically to the hypothesis that there are potentially an infinite number of unrelated subvening facts which may constitute supervening moral properties. We by no means have attempted to settle the argument on the side of naturalism, but have only identified an obstacle to rigorous argumentation, and pioneered a method to eliminate it. We hope our research will be of interest to both the Analytic Philosophy and the Applied Mathematics communities, and will help facilitate discussions of metaethics, particularly pertaining to ethical naturalism. We believe there is much research yet to be done. (shrink)

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)

چکیده علامه­ طباطبایی فیلسوفی کلاسیک بر ممشای حکمت متعالیه و مفسر بزرگ قرآن کریم است اما اندیشه­ی وی در این دو حوزه محدود و متمرکز نشده و در حوزه‌های معرفتی دیگر نیز دارای اندیشه‌های بدیعی است. یکی از این حوزه‌ها فلسفه‌ی اخلاق است. بی‌تردید اصلی‌ترین بحث در فلسفه‌ی اخلاق به تقسیم‌بندی واقع‌گرایی و غیر واقع‌گرایی اخلاقی تعلق دارد. هدف از این پژوهش پردازش این مسأله است که علامه طباطبایی در کدام‌یک از این دسته‌بندی‌ها جای دارد و تبیین آن با کدام (...) موضوعات فلسفی انجام می‌پذیرد؟ این مقاله که با روشی اسنادی­_تحلیلی تألیف شده است، تلاش دارد با تحلیل و تبیین مساله­ی «اعتباریات» و نگهداشت مساله­ی «احساس» ذیل عنوان اعتباریات به این موضوع بپردازد. نتیجه­ی پژوهش این است که علامه طباطبایی یک واقع‌گرای اخلاقیِ تعریف گرایانه است. (shrink)

Error theories have been proposed and defended in several different areas of philosophy. In addition to ethics, there are error theories about numbers, color, free will, and personal identity. Moral error theories differ in scope. Theories at one end of the spectrum take normative judgments in general—of which moral judgments are a subclass—to be uniformly false, whereas theories at the other end of the spectrum take only a subclass of moral judgments—example those concerning duty and obligation, but not those concerning (...) virtue and vice—to be uniformly false. Moral error theorists typically join forces with non-naturalist realists, against naturalism and non-cognitivism. Facts that are normative in the reason-implying sense are irreducibly normative, and they are very different. Many non-naturalist realists and error theorists maintain that it is impossible to give a plausible naturalistic account of moral facts, precisely because they are irreducibly normative; moral naturalism therefore falls prey to the "normativity objection". (shrink)

A critical survey of various positions on the nature, use, possession, and analysis of normative concepts. We frame our treatment around G.E. Moore’s Open Question Argument, and the ways metaethicists have responded by departing from a Classical Theory of concepts. In addition to the Classical Theory, we discuss synthetic naturalism, noncognitivism (expressivist and inferentialist), prototype theory, network theory, and empirical linguistic approaches. Although written for a general philosophical audience, we attempt to provide a new perspective and highlight some underappreciated problems (...) about normative concepts. (shrink)

This chapter discusses vagueness in ethics.

(1992). TROUBLES FOR NEW WAVE MORAL SEMANTICS: THE ‘OPEN QUESTION ARGUMENT’ REVIVED. Philosophical Papers: Vol. 21, No. 3, pp. 153-175. doi: 10.1080/05568649209506380.

Internalism about a person's good is roughly the view that in order for something to intrinsically enhance a person's well-being, that person must be capable of caring about that thing. I argue in this paper that internalism about a person's good should not be believed. Though many philosophers accept the view, Connie Rosati provides the most comprehensive case in favor of it. Her defense of the view consists mainly in offering five independent arguments to think that at least some form (...) of internalism about one's good is true. But I argue that, on closer inspection, not one of these arguments succeeds. The problems don't end there, however. While Rosati offers good reasons to think that what she calls 'two-tier internalism' would be the best way to formulate the intuition behind internalism about one's good, I argue that two-tier internalism is actually false. In particular, the problem is that no substantive theory of well-being is consistent with two-tier internalism. Accordingly, there is reason to think that even the best version of internalism about one's good is in fact false. Thus, I conclude, the prospects for internalism about a person's good do not look promising. (shrink)

Experimental moral philosophy began to emerge as a methodology inthe last decade of the twentieth century, a branch of the largerexperimental philosophy approach. From the beginning,it has been embroiled in controversy on a number of fronts. Somedoubt that it is philosophy at all. Others acknowledge that it isphilosophy but think that it has produced modest results at best andconfusion at worst. Still others think it represents an important advance., Before the research program can be evaluated, we should have someconception of (...) its scope. But controversy surrounds questionsabout its boundaries as well. Uncontroversially, the distinctionbetween experimental and non-experimental philosophy is not identicalto the distinction between a posteriori and a prioriphilosophy. Experimental evidence is a proper subset of empiricalevidence, which is itself a subset of a posteriorievidence. Can any more be said?, L1: A child raised in a particular linguistic community almostinevitably ends up speaking an idiolect of the local language despitelack of sufficient explicit instruction, lack of extensive negativefeedback for mistakes, and grammatical mistakes by caretakers., character, moral | cognitivism vs. non-cognitivism, moral | emotion | ethics: virtue | intuition | moral anti-realism | moral psychology: empirical approaches | moral realism | moral relativism | well-being, Copyright © 2014 byMark Alfano Don Loeb, View this site from another server:. (shrink)

David Brink has recently argued for the “parity” of ethics and the sciences. While the parity claim alone might be metaphysically neutral, Brink favours a form of ethical naturalism on which moral properties “are” natural properties, just as non-moral macrophysical properties “are” the microphysical states that compose them. Brink supports this claim by showing that both types of properties share certain important features: specifically, that both may be constituted, supervening and synthetically necessitated. I shall argue that notwithstanding these common features, (...) there remain significant modal differences in the way the two types of properties are assigned to the world. These differences represent an important respect in which moral properties are not on par with their scientific counterparts. (shrink)

In two curiously neglected papers, David Lewis claims to reduce to absurdity the supposition (commonly labeled DAB) that (some) desires are belief-like. My aim in this paper is to explain the significance of this claim and rebut the proof.

[This paper is available as open access from the publisher.]The conventional wisdom in ethics is that pure moral laws are at least metaphysically necessary. By contrast, Moral Contingentism holds that pure moral laws are metaphysically contingent. This paper raises a normative objection to Moral Contingentism: it is worse equipped than Moral Necessitarianism to account for the normative standing or authority of the pure moral laws to govern the lives of the agents to whom they apply. Since morality is widely taken (...) to have such a standing, failing to account for it would be a significant problem. The objection also shows that the debate about the modal status of moral principles isn’t a debate solely within modal metaphysics, but has implications for topics in moral philosophy. (shrink)

ABSTRACT Moral Naturalism is the view that moral judgments aim at describing moral facts and that these are ordinary garden-variety natural facts. Moral Naturalism has trouble accounting for the intuition that we cannot outsource moral judgments, i.e., we cannot ground a moral conviction that p on the fact that a reliable moral adviser holds that p. There have been, however, several attempts to explain this intuition away or to discredit the intuition pumps that bring it forward. I argue that moral (...) naturalists are not in a position to deny this intuition. Moral Naturalism embodies a conception of the minimal conditions for someone to qualify as capable of making moral judgments; among these conditions is the acknowledgment of the supervenience of the moral on the non-moral; given the naturalist's conception of what it takes for someone to be capable of moral judgment, if we allow agents to outsource their moral judgments we come to situations in which the convictions of moral agents do not comply with the acknowledgment of moral supervenience. The naturalist must, therefore, deny the possibility of moral outsourcing. Moral Naturalism, then, faces the problem of making sense of the ban on moral outsourcing. (shrink)

In order to rebut G. E. Moore’s open question argument, ethical naturalists adopt a theory of direct reference for our moral terms. T. Horgan and M. Timmons have argued that this theory cannot be applied to moral terms, on the ground that it clashes with competent speakers’ linguistic intuitions. While Putnam’s Twin Earth thought experiment shows that our linguistic intuitions confirm the theory of direct reference, as applied to ‘water’, Horgan and Timmons devise a parallel thought experiment about moral terms, (...) in order to show that this theory runs against our linguistic intuitions about such terms. My claim is that the Horgan–Timmons argument does not work. I concede that their thought experiment is a good way to test the applicability of the theory of direct reference to moral terms, and argue that the upshot of their experiment is not what they claim it is: our linguistic intuitions about Moral Twin Earth are parallel to, not different from, our intuitions about Twin Earth. (shrink)

The fact of moral disagreement when conjoined with Conciliationism, an independently attractive view about the epistemic significance disagreement, seems to entail moral skepticism. This worries those who like Conciliationism, the independently attractive view, but dislike moral skepticism. Others, equally inclined against moral skepticism, think this is a reductio of Conciliationism. I argue that they are both wrong. There is no reductio and nothing to worry about.

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)

Mackie famously argued for a moral error theory on the basis that objective moral values, if they existed, would be very queer entities. Unfortunately, his argument is very brief and it is not totally obvious from what he says exactly where the queerness of moral values is supposed to lie. In this paper I will firstly show why a typical interpretation of Mackie is problematic and secondly offer a new interpretation. I will argue that, whether or not we have reason (...) to live in the morally correct way, what seems queer about moral properties is that there is a morally correct way in which to live in the first place. This interpretation makes sense of Mackie’s claim that theism might be able to solve the queerness problem; the notion of an objectively correct way to live may make sense if theism is true, but not otherwise. (shrink)

Some philosophers think that normative properties are identical to descriptive properties. In this paper, I argue that this entails that it is possible to say which descriptive properties normative properties are identical to. I argue that Frank Jackson's argument to show that this is possible fails, and that the objections to this argument show that it is impossible to say which descriptive properties normative properties are identical to. I conclude that normative properties are not identical to descriptive properties. I then (...) show that if we combine this conclusion with the conclusion of a different argument that Jackson has given to show that there are no irreducibly normative properties, it follows that there are no normative properties at all. (shrink)

In this paper I revisit an important response to the Moral Twin Earth (MTE) challenge: The Common Functional Role strategy (CFR). I argue that CFR is open to a revenge problem. MTE-cases allegedly show that two linguistic communities can be in genuine disagreement even when they are regulated by distinct families of properties. CFR provides a way to reconcile the intuition that the two communities are in genuine disagreement with the claim that the use of moral terms by both communities (...) is causally regulated by different families of properties. This is done by identifying a functional role that those families of properties both fulfill. Still, even if CFR is successful, its proponents need to face a serious revenge problem. Roughly, it could be that the families of properties that regulate each community are equally perfect realizers of the relevant higher-order functional state. I suggest that the proponent of CFR faces a dilemma: either CFR has controversial implications about first-order moral theory, or CFR needs to be coupled with substantive and parochial empirical/metaphysical assumptions to avoid those implications. (shrink)

In this paper, I critically analyze the notion that self-interest distorts moral belief-formation. This belief is widely shared among modern moral epistemologists, and in this paper, I seek to undermine this near consensus. I then offer a principle which can help us to sort cases in which self-interest distorts moral belief from cases in which it does not. As it turns out, we cannot determine whether such distortion has occurred from the armchair; rather, we must inquire into mechanisms of social (...) power and advantage before declaring that some moral position is distorted by self-interest. (shrink)

The existence of deep and persistent moral disagreement poses a problem for a defender of moral knowledge. It seems particularly clear that a philosopher who thinks that we know a great many moral truths should explain how human populations have failed to converge on those truths. In this paper, I do two things. First, I show that the problem is more difficult than it is often taken to be, and second, I criticize a popular response, which involves claiming that many (...) false moral beliefs are the product of nonmoral ignorance. (shrink)

In this paper, I argue that in order to explain our own moral reliability, we must provide a theory of error for those who disagree with us. Any story that seeks to vindicate our own reliability must also explain how so many others have gone wrong, otherwise it is not actually a vindicatory story. Thus, we cannot claim to have vindicated our own moral reliability unless we can explain the unreliability of those who hold contrary beliefs. This, I show, requires (...) us to engage directly with cultural history, a topic which has been unfortunately obscured by the meta-ethicist’s near-exclusive focus on evolutionary challenges to moral belief. (shrink)

The ' argument from queerness', made famous by J. L. Mackie, remains one of the most influential arguments in metaethics. However, many philosophers focus on just one or two of its strands, while others assume a particular but by no means universal reading of it. This essay attempts to disentangle and evaluate all strands of the argument. Surprisingly, when this is done, not much is left as a distinct argument from queerness. Much of the argument collapses into other types of (...) argument, and what is left, though intuitively appealing, is not viable as philosophical argument. (shrink)

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.

The most popular argument against moral realism is the argument from disagreement: if there are mind‐independent moral facts, then we would not expect to find as much moral disagreement as we in fact do; therefore, moral realism is false. In this paper, I develop the flipside of this argument. According to this argument from agreement, we would expect to find lots of moral disagreement if there were mind‐independent moral facts. But we do not, in fact, find much moral disagreement; therefore, (...) moral realism is false. I defend the argument, explain the empirical evidence that supports it, and show what makes this challenge novel and powerful. (shrink)

Many believe that there is at least some asymmetry between the extent to which moral and non-moral ignorance excuse. I argue that the exculpatory force of moral ignorance—or lack thereof—poses a thus far overlooked challenge to moral realism. I show, firstly, that if there were any mind-independent moral truths, we would not expect there to be an asymmetry in exculpatory force between moral and ordinary ignorance at all. I then consider several attempts the realist might make to deny or accommodate (...) this datum, and show why none of them work. (shrink)

A number of philosophers defend naturalistic moral realism by appeal to an externalist semantics for moral predicates. The application of semantic externalism to moral predicates has been attacked by Terence Horgan and Mark Timmons in a series of papers that make use of their “ Moral Twin Earth ” thought experiment. In response, several defenders of naturalistic moral realism have claimed that the Moral Twin Earth thought experiment is misleading and yields distorted and inaccurate semantic intuitions. If they are right, (...) the intuitions generated by Moral Twin Earth cannot be appealed to in arguments against externalist moral semantics. The most developed case against the Moral Twin Earth argument that follows this strategy is found in a paper by Stephen Laurence, Eric Margolis and Angus Dawson. Here I argue that their attack on the Moral Twin Earth thought experiment fails. Laurence, Margolis and Dawson have not shown that we have reason to distrust the semantic intuitions it generates. (shrink)

Michael Ruse has proposed in his recent book Taking Darwin Seriously and elsewhere a new Darwinian ethics distinct from traditional evolutionary ethics, one that avoids the latter's inadequate accounts of the nature of morality and its failed attempts to provide a naturalistic justification of morality. Ruse argues for a sociobiologically based account of moral sentiments, and an evolutionary based casual explanation of their function, rejecting the possibility of ultimate ethical justification. We find that Ruse's proposal distorts, overextends and weakens both (...) Darwinism and naturalism. So we propose an alternative Darwinian metaethics that both remedies the problems in Ruse's proposal and shows how a Darwinian naturalistic account of the moral good in terms of human fitness avoids the naturalistic fallacy and can provide genuine, even if limited, justifications for substantive ethical claims. Thus, we propose to really take Darwin seriously. (shrink)

Artificially intelligent systems will be used to make increasingly important decisions about us. Many of these decisions will have to be made without universal agreement about the relevant moral facts. For other kinds of disagreement, it is at least usually obvious what kind of solution is called for. What makes moral disagreement especially challenging is that there are three different ways of handling it. Moral solutions apply a moral theory or related principles and largely ignore the details of the disagreement. (...) Compromise solutions apply a method of finding a compromise and taking information about the disagreement as input. Epistemic solutions apply an evidential rule that treats the details of the disagreement as evidence of moral truth. Proposals for all three kinds of solutions can be found in the AI ethics and value alignment literature, but little has been said to justify choosing one over the other. I argue that the choice is best framed in terms of moral risk. (shrink)

According to the argument from moral disagreement, the existence of widespread or persistent moral disagreement is best explained by, and thus supports, the view that there are no objective moral truths. One of the most common charges against this argument is that it “overgeneralises”: it implausibly forces its proponents to also deny the existence of objective truths about certain matters of physics, history, philosophy, etc. (“companions in guilt” objections) or even about the argument’s own conclusion or its own soundness (“self-defeat” (...) objections). My aim in this article is to provide a detailed clarification and assessment of this overgeneralisation charge. Various (mostly empirical) issues relevant to assessing the above objections have so far not been sufficiently investigated. Nevertheless, there are good reasons to believe that realists have exaggerated the significance of their overgeneralisation charge. Both its companions in guilt and its self-defeat versions likely fail. (shrink)

My first paper on the Is/Ought issue. The young Arthur Prior endorsed the Autonomy of Ethics, in the form of Hume’s No-Ought-From-Is (NOFI) but the later Prior developed a seemingly devastating counter-argument. I defend Prior's earlier logical thesis (albeit in a modified form) against his later self. However it is important to distinguish between three versions of the Autonomy of Ethics: Ontological, Semantic and Ontological. Ontological Autonomy is the thesis that moral judgments, to be true, must answer to a realm (...) of sui generis non-natural PROPERTIES. Semantic autonomy insists on a realm of sui generis non-natural PREDICATES which do not mean the same as any natural counterparts. Logical Autonomy maintains that moral conclusions cannot be derived from non-moral premises.-moral premises with the aid of logic alone. Logical Autonomy does not entail Semantic Autonomy and Semantic Autonomy does not entail Ontological Autonomy. But, given some plausible assumptions Ontological Autonomy entails Semantic Autonomy and given the conservativeness of logic – the idea that in a valid argument you don’t get out what you haven’t put in – Semantic Autonomy entails Logical Autonomy. So if Logical Autonomy is false – as Prior appears to prove – then Semantic and Ontological Autonomy would appear to be false too! I develop a version of Logical Autonomy (or NOFI) and vindicate it against Prior’s counterexamples, which are also counterexamples to the conservativeness of logic as traditionally conceived. The key concept here is an idea derived in part from Quine - that of INFERENCE-RELATIVE VACUITY. I prove that you cannot derive conclusions in which the moral terms appear non-vacuously from premises from which they are absent. But this is because you cannot derive conclusions in which ANY (non-logical) terms appear non-vacuously from premises from which they are absent Thus NOFI or Logical Autonomy comes out as an instance of the conservativeness of logic. This means that the reverse entailment that I have suggested turns out to be a mistake. The falsehood of Logical Autonomy would not entail either the falsehood Semantic Autonomy or the falsehood of Ontological Autonomy, since Semantic Autonomy only entails Logical Autonomy with the aid of the conservativeness of logic of which Logical Autonomy is simply an instance. Thus NOFI or Logical Autonomy is vindicated, but it turns out to be a less world-shattering thesis than some have supposed. It provides no support for either non-cognitivism or non-naturalism. (shrink)