We are fallible creatures, prone to making all sorts of mistakes. So, we should be open to evidence of error. But what constitutes such evidence? And what is it to rationally accommodate it? I approach these questions by considering an evolutionary debunking argument according to which (a) we have good, scientific, reason to think our moral beliefs are mistaken, and (b) rationally accommodating this requires revising our confidence in, or altogether abandoning the suspect beliefs. I present a dilemma for such (...) debunkers, which shows that either we have no reason to worry about our moral beliefs, or we do but we can self-correct. Either way, moral skepticism doesn’t follow. That the evolutionary debunking argument fails is important; also important, however, is what its failure reveals about rational belief revision. Specifically, it suggests that getting evidence of error is a non-trivial endeavor and that we cannot learn that we are likely to be mistaken about some matter from a neutral stance on that matter. (shrink)

The causal premise of the evolutionary debunking argument contends that human moral beliefs are explained by the process of natural selection. While it is universally acknowledged that such a premise is fundamental to the debunker’s case, the vast majority of philosophers focus instead on the epistemic premise that natural selection does not track moral truth and the resulting skeptical conclusion. Recently, however, some have begun to concentrate on the causal premise. So far, the upshot of this small but growing literature (...) has been that the causal premise is likely false due to the seemingly persuasive evidence that our moral beliefs are in fact not the result of natural selection. In this paper, I argue that this view is mistaken. Specifically, I advocate the Innate Biases Model, which contends that there is not only compelling evidence for an evolved cognitive capacity for acquiring norms but also for the existence of an evolutionarily instilled set of cognitive biases that make it either more or less likely that we adopt certain moral beliefs. (shrink)

Metaethical debunking arguments often conclude that no moral belief is epistemically justified. Early versions of such arguments largely relied on metaphors and analogies and left the epistemology of debunking underspecified. Debunkers have since come to take on substantial and broad-ranging epistemological commitments. The plausibility of metaethical debunking has thereby become entangled in thorny epistemological issues. In this thesis, I provide a critical yet sympathetic evaluation of the prospects and challenges facing such arguments in light of this development. In doing so, (...) I address the following central question: how could genealogical information undermine the epistemic justification of moral beliefs? In Part I, I begin answering the central question by extracting explicit and implicit epistemic principles from three popular debunking arguments. These arguments, due to Gilbert Harman, Richard Joyce, and Sharon Street, generate principles concerning ontological parsimony, explanatory dispensability, epistemic insensitivity, lack of epistemic safety, unexplained reliability, epistemic coincidences, and explanatory constraints on rational belief. Having set out the principles tasked with explaining how genealogical information undermines, Part II of the thesis seeks to evaluate whether debunking arguments built on them succeed. To this end, I consider two types of challenges faced by such arguments. First, there are strategies that attempt to block global moral debunking arguments. I argue that one popular such strategy, the so-called ‘third-factor strategy’, has been misunderstood. When understood correctly, it is of no help in answering debunking arguments. I then flesh out an alternative and more promising strategy for blocking such arguments. I then turn to internal challenges facing debunkers, particularly those who rely on ‘explanationist’ principles. I argue that explanationist debunking arguments, as well as most others, fall prey to one or more of four internal challenges: the implausibility of first-order epistemic principles, the threat of overgeneralization, the threat of self-defeat, and the need for costly metaepistemic commitments. I conclude that current debunking arguments fail to establish that no moral belief is justified. By analyzing why existing arguments fail, I develop two conditions of adequacy that debunkers must satisfy in order to navigate the internal challenges successfully. I end by suggesting future directions that debunkers should pursue to rehabilitate the prospects for global moral debunking arguments. (shrink)

Denying the conclusion of a valid argument is not generally permissible if one suspends on one premise of the argument and believes the other premise. This can happen when one’s only critique of an argument is to undermine one premise. There is incoherence there. Here I examine how this is relevant to the debate on evolutionary debunking of our moral knowledge. I argue that one significant line of response to the debunker is unsuccessful: merely undermining the debunker’s empirical claim. It (...) is not rational to respond this way and believe one has moral knowledge. First I present evidence that prominent critics of the debunking argument merely undermine the debunker’s empirical claim. Then I argue for two premises: merely undermining a premise can only justify a middling amount of doubt towards the premise and we should have no more doubt about the conclusion of a valid argument than we do about the premises. Implications of the argument are explored. (shrink)

In attempting to debunk moral realism through an appeal to evolutionary facts, debunkers face a series of problems, which we label the problems of scope, corrosiveness, and post‐hoc justification. To overcome these problems, debunkers must assume certain metaphysical or epistemological positions, or otherwise pre‐establish them. In doing so, they must assume or pre‐establish the very conclusion they seek in advancing the argument. This means that such debunking arguments either beg the question against the moral realist or are undermined as standalone (...) metaethical arguments. (shrink)

Evolutionary debunking arguments aim to undercut the epistemological status of our evaluative beliefs on the basis of the genesis of our belief-forming tendencies. This paper addresses the issue whether responses to these arguments must be question-begging. It argues for a pragmatic understanding of question-beggingness, according to which whether an argument is question-begging depends on the argumentative context. After laying out the debunking argument, the paper considers a variety of responses. It asks whether metaethical responses, such as Sharon Street’s response that (...) relies on a version of antirealism, can avoid begging the question. It argues that so-called ‘third-factor’ responses, which rely on substantive evaluative views, are not question-begging in all contexts. Similarly, it argues, my own ‘quasi-tracking’ response is not question-begging in all contexts. Finally, the paper asks whether responses to the debunking argument can avoid begging the question against someone who is convinced at the outset that the argument is sound. -/- . (shrink)

Evolutionary debunking arguments purport to undercut the justification of our moral judgments by showing why a tendency to make moral judgments would evolve regardless of the truth of those judgments. Machery and Mallon (2010. Evolution of morality. In J.M. Doris and The Moral Psychology Research Group (Eds.), The Moral Psychology Handbook (pp. 3-46). Oxford: Oxford University Press) have recently tried to disarm these arguments by showing that moral cognition – in the sense that is relevant to debunking – is not (...) the product of natural selection. Specifically, they present a barrage of increasingly influential challenges against reciprocity-based approaches to moral nativism. In the present paper I defend the nativist account of moral cognition against these criticisms, thereby bolstering the skeptical conclusions of evolutionary debunking arguments. However, Machery and Mallon's critique does successfully highlight several vulnerabilities in Richard Joyce's approach to debunking, suggesting several ways in which it can be revised toward generating a more robust version of the argument. (shrink)

There has lately been substantial interest in scrutinizing our evaluative attitudes in light of our evolutionary history. However, these discussions have been hampered by an insufficiently expansive vantage. Our history did not begin ex nihilo a few million years ago with the appearance of hominins, or apes, or primates—those are very recent chapters of a much larger story that spans billions of years. This paper situates the mechanisms underlying normative thought within this broader context. I argue that this historical perspective (...) creates difficulties for metaethical nonnaturalists. The expanded scope enables the story to be anchored in negative claims about value, making room for novel epistemological and metaphysical challenges that are more threatening than extant evolutionary debunking arguments. (shrink)

Neuromoral theorists are those who claim that a scientific understanding of moral judgment through the methods of psychology, neuroscience and related disciplines can have normative implications and can be used to improve the human ability to make moral judgments. We consider three neuromoral theories: one suggested by Gazzaniga, one put forward by Gigerenzer, and one developed by Greene. By contrasting these theories we reveal some of the fundamental issues that neuromoral theories in general have to address. One important issue concerns (...) whether the normative claims that neuromoral theorists would like to make are to be understood in moral terms or in non-moral terms. We argue that, on either a moral or a non-moral interpretation of these claims, neuromoral theories face serious problems. Therefore, neither the moral nor the non-moral reading of the normative claims makes them philosophically viable. (shrink)

According to some recent arguments, if our moral beliefs are products of natural selection, then we do not have moral knowledge. In defense of this inference, its proponents argue that natural selection is a process that fails to track moral facts. In this paper, I argue that our having moral knowledge is consistent with, the hypothesis that our moral beliefs are products of natural selection, and the claim that natural selection fails to track moral facts. I also argue that natural (...) selection is a process that could track moral facts, albeit imperfectly. I do not argue that we do have moral knowledge. I argue instead that Darwinian considerations provide us with no reason to doubt that we do, and with some reasons to suppose that we might. (shrink)

The perspective drawn from evolutionary science, undoubtedly one of the most remarkable intellectual achievements in our conception of the world, poses a deep challenge to epistemology and the meaning of truth. The present paper aims to examine the difficulties offered by the prevailing biological model for the emergence and development of mind in its attempt at constructing a possible philosophical theory of truth. We propose a solution which, while preserving the priority of the distinction between truth and falsehood, is nonetheless (...) capable of reconciling its philosophical fundamentals with the scientific evidence concerning the evolutionary origin of our capacity to recognize truth and falsehood. (shrink)

Many moral debunking arguments are driven by the idea that the correlation between our moral beliefs and the moral truths is a big coincidence, given a robustly realist conception of morality.One influential response is that the correlation is not a coincidence because there is a common explainer of our moral beliefs and the moral truths. For example, the reason that I believe that I should feed my child is because feeding my child helps them to survive, and natural selection instills (...) in me beliefs and dispositions that help my children survive since that is conductive to my genes continuing through the generations. Similarly, the reason that it's morally good to feed my child is because it helps them to survive, and survival is morally valuable.But if we look at some cases from scientific practice, and from everyday life, we can see, I argue, why this response fails. A correlation can be coincidental even if there is a common explainer. I give an account of the nature of coincidence that draws upon recent literature on scientific explanation and argue that the correlation between moral belief and moral truth is a coincidence, even given such common explainers. And I use this to defend a certain form of debunking argument. (shrink)

In this article, I articulate and respond to an epistemological challenge to meta-normative realism. The challenge has it that, if realism about the normative is correct, and if evolutionary forces have significantly influenced our normative judgments, then it would be a remarkable coincidence if the content of the normative facts and our normative judgments were aligned. I criticize David Enoch's recent attempt to meet this challenge, but provide an alternative response that is structurally similar. I argue that if realism is (...) correct, then it would be remarkable if the content of our normative judgments and the normative facts were not significantly aligned. (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.

A constructivist defense of ethical objectivity in contrast to debunking arguments.

Félix Aubé Beaudoin | : Le dilemme darwinien, formulé par Sharon Street, somme les réalistes moraux d’expliquer pourquoi de nombreux jugements qui sont des candidats au statut de vérités morales indépendantes sont aussi ceux qui ont une grande valeur sélective. Les réalistes peuvent soit nier, soit affirmer l’existence d’un lien entre pressions évolutionnistes et vérités morales. Selon Street, la première option mène au scepticisme tandis que la seconde est indéfendable sur le plan scientifique. Peter Singer et Katarzyna de Lazari-Radek optent (...) pour la première branche de ce dilemme. Dans cet article, la stratégie argumentative qu’ils adoptent — la réponse naturelle — sera soumise à un examen critique. Deux objections seront formulées. La première est d’ordre épistémologique : l’intuitionnisme philosophique défendu par les auteurs fait face à des difficultés majeures. La seconde, plus fondamentale, est que leur solution ne permet pas d’expliquer autrement que par un heureux hasard l’alignement entre les vérités morales et les jugements ayant une valeur sélective. | : According to Sharon Street’s Darwinian Dilemma, moral realists must explain why many judgments that are likely to be independent moral truths are those it would be evolutionarily adaptive to hold. Realists can either deny or assert the existence of a relation between evolutionary influences and moral truths. The first option leads to skepticism, while the second is unacceptable on scientific grounds, says Street. Peter Singer and Katarzyna de Lazari-Radek take the first horn of this dilemma. In this article, the argumentative strategy they adopt — the Natural Reply - is submitted to critical scrutiny. Two objections are raised. The first objection is epistemological : philosophical intuitionism, as defended by the authors, is an untenable position. The second objection is that their solution must appeal to unlikely coincidences to account for the overlap between independent moral truths and evolutionarily adaptive attitudes. (shrink)

Moral realists face an epistemological challenge: they must explain why many judgments that are likely to be moral truths are those it would be evolutionarily adaptive to hold. Is it a coincidence? Do evolutionary forces track these truths?Third-factor explanationis the strategy most commonly adopted by moral realists to explain this striking correlation. In this article, I argue that it does not allow them to meet the challenge.

The dominant theory of the evolution of moral cognition across a variety of fields is that moral cognition is a biological adaptation to foster social cooperation. This chapter argues, to the contrary, that moral cognition is likely an evolutionary exaptation: a form of cognition where neurobiological capacities selected for in our evolutionary history for a variety of different reasons—many unrelated to social cooperation—were put to a new, prosocial use after the fact through individual rationality, learning, and the development and transmission (...) of social norms. This chapter begins with a brief overview of the emerging behavioral neuroscience of moral cognition. It then outlines a novel theory of moral cognition that I have previously argued explains these findings better than alternatives. Finally, it shows how the evidence for this theory of moral cognition and human evolutionary history together suggest that moral cognition is likely not a biological adaptation. Instead, like reading sheet music or riding a bicycle, moral cognition is something that individuals learn to do—in this case, in response to sociocultural norms created in our ancestral history and passed down through the ages to enable cooperative living. (shrink)

Street’s (Philos Stud 127(1):109–166, 2006) Darwinian Dilemma purports to show that evolutionary considerations are in tension with realist theories of value, which include moral realism. According to this argument, moral realism can only be defended by assuming an implausible tracking relation between moral attitudes and moral facts. In this essay, I argue that this tracking relation is not as implausible as most people have assumed by showing that the three main objections against it are flawed. Since this is a key (...) premise in the reasoning, I conclude that the Darwinian Dilemma against moral realism can be resisted. (shrink)

I show that an overlooked feature of our moral life—moral status—provides a route to vindicating naturalist moral realism in much the same way that the Humean theory of motivation and judgment internalism are used to undermine it. Moral status presents two explanatory burdens for metaethical views. First, a given view must provide an ecumenical explanation of moral status, which does not depend on the truth of its metaethical claims (say, that there are mind-independent facts about moral status). Second, its explanation (...) must be consistent with persistent normative ethical disagreement about what constitutes moral status. I conclude that naturalist moral realism succeeds, while quasi-realism fails because it cannot meet the latter requirement. This argument has three results: we have a new route for metaethical vindication more generally and for naturalist moral realism in particular; quasi-realism's plausibility is undermined by an inability to explain disagreement, but not for the familiar reasons. (shrink)

Many hope that our values, purged of messy human contingency, could aspire to correspond with mind-independent, rationally obligatory, and eternal ethical facts. But if the arguments of this thesis are on the right track, we should reject the search for non-natural and mind-independent moral truths.

Suppose we grant that evolutionary forces have had a profound effect on the contours of our normative judgments and intuitions. Can we conclude anything from this about the correct metaethical theory? I argue that, for the most part, we cannot. Focusing my attention on Sharon Street’s justly famous argument that the evolutionary origins of our normative judgments and intuitions cause insuperable epistemological difficulties for a metaethical view she calls "normative realism," I argue that there are two largely independent lines of (...) argument in Street’s work which need to be teased apart. The first of these involves a genuine appeal to evolutionary considerations, but it can fairly easily be met by her opponents. The second line of argument is more troubling; it raises a significant problem, one of the most difficult in all of philosophy, namely how to justify our reliance on our most basic cognitive faculties without relying on those same faculties in a question-begging manner. However, evolutionary considerations add little to this old problem, and rejecting normative realism is not a way to solve it. (shrink)

In metaethics, evolutionary debunking arguments combine empirical and epistemological premises to purportedly show that our moral judgments are unjustified. One objection to these arguments has been to distinguish between those judgments that evolutionary influence might undermine versus those that it does not. This response is powerful but not well understood. In this paper I flesh out the response by drawing upon a familiar distinction in the natural sciences, where it is common to distinguish folk judgments from theoretical judgments. I argue (...) that this in turn illuminates the proper scope of the evolutionary debunking argument, but not in an obvious way: it is a very specific type of undermining argument that targets those theories where theoretical judgments are inferred merely from folk judgments. One upshot of this conclusion is that it reveals a verboten methodology in metaethics. The evolutionary debunking argument is therefore much less powerful than its proponents have supposed, but it nevertheless rules out what is perhaps a common way of attempting to justify moral judgments. (shrink)

In this article, I explore the method of genealogy in moral philosophy, with a focus on evaluating the credibility of moral progress judgments. Despite genealogy becoming a new trend in this field, I critique three types of defective grand narrative genealogies represented by the works of Peter Railton, Michael Huemer, and Nicholas Smyth. I argue that their genealogies fail to be adequate for evaluating moral progress judgments’ credibility. Railton’s genealogy lacks specificity regarding the relatum of the causal story he presents, (...) Huemer’s fails to withstand the scrutiny of historical evidence, and Smyth’s gives no clear verdict on the credibility of the moral progress judgments it explains. These failures, I argue, stem from grand narratives’ neglect of the particularities in each case of moral belief emergence. The disregard for details renders grand narratives generally inadequate for credibility evaluation. Instead, I propose a case study approach that takes into account four types of particulars in each case. I argue that this approach is more methodologically adequate in evaluating the credibility of moral progress judgments since these case-specific details are essential in determining the credibility of a moral belief. (shrink)

An influential species of evolutionary debunking argument against moral realism holds that since cumulative natural selection shaped the contents of our moral beliefs, those beliefs do not count as knowledge. Critics have taken issue with a range of empirical, epistemic, and metaphysical assumptions that EDAs are said to rely on, which has engendered a complex debate over whether and to what extent the debunking challenge succeeds. However, recently it has been argued that we can reject EDAs without having to enter (...) this thicket of issues. EDAs supposedly fail at the outset, by trading on a glaring misunderstanding about the scope of natural selection explanations. I argue that this objection to EDAs fails, and itself rests on a mistaken view of natural selection explanation and its relation to justification. (shrink)

The apparent implications of the latest findings of the life sciences for our freedom and autonomy are both exciting and controversial: They undermine a common view of human freedom: a fundamentally Cartesian view. A superior account of our freedom was developed by Kant and Hegel. Key features of Hegel's account show that we can expect from the life sciences further insights into the biological basis of our freedom and autonomy, but not their repudiation. I begin with basic features of Cartesian (...) self-transparency (II) and then review three findings of contemporary life sciences (III). I then detail key features of Hegel's anti-Cartesianism (IV), in order to formulate the basic question about our freedom posed by the claim that biology explains away human freedom (V). I criticize this biological determinism by drawing upon Hegel's account of human freedom as autonomy (VI), and comment briefly on biologism in moral theory (VII). (shrink)

One of the alleged advantages of a constructivist theory in metaethics is that the theory avoids the epistemological problems with moral realism while reaping many of realism's benefits. According to evolutionary debunking arguments, the epistemological problem with moral realism is that the evolutionary history of our moral beliefs makes it hard to see how our moral beliefs count as knowledge of moral facts, realistically construed. Certain forms of constructivism are supposed to be immune to this argument, giving the view a (...) key advantage. This paper considers the challenge that evolutionary debunking arguments pose for the possibility of moral knowledge and concludes that such arguments do not reveal any advantages for constructivism. Furthermore, once we consider how defenders of moral knowledge should best respond to this epistemological objection, constructivists may face more difficulties, not less, explaining how our moral beliefs represent moral knowledge. (shrink)

Some think that recent empirical research has shown that peoples' moral intuitions vary in a way that is hard to reconcile with the supposition that they are even modestly reliable. This is in turn supposed to generate skeptical conclusions regarding the claims and theories advanced by ethicists because of the crucial role intuitions have in the arguments offered in support of those claims. I begin by trying to articulate the most compelling version of this challenge. On that version, the main (...) problem is the absence of a believable positive account of the reliability of the intuitions . I then consider the response to this challenge that, in my view, holds most promise. It differs from others by invoking substantive moral assumptions. Such a strategy may appear problematically circular, in that the justification of those assumptions seems to presuppose the very thesis that is challenged . However, although I think that objection can be met, I argue that there are other problems with the strategy. On the basis of a set of conditions that a successful defense of the pertinent kind plausibly must satisfy, I argue that the prospects of developing such an account are bleak. (shrink)

The ethics of biological procreation has received a great deal of attention in recent years. Yet, as I show in this paper, much of what has come to be called procreative ethics is conducted in a strangely abstract, impersonal mode, one which stands little chance of speaking to the practical perspectives of any prospective parent. In short, the field appears to be flirting with a strange sort of practical irrelevance, wherein its verdicts are answers to questions that no-one is asking. (...) I go on to articulate a theory of what I call existential grounding, a notion which explains the role that prospective children play in the lives of many would-be parents. Procreative ethicists who want their work to have real practical relevance must, I claim, start to engage with this markedly first-personal kind of practical consideration. (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)

It is increasingly common to suggest that the combination of evolutionary theory and normative realism leads inevitably to a general scepticism about our ability to reliably form normative beliefs. In what follows, I argue that this is not the case. In particular, I consider several possible arguments from evolutionary theory and normative realism to normative scepticism and explain where they go wrong. I then offer a more general diagnosis of the tendency to accept such arguments and why this tendency should (...) be resisted. (shrink)

How do scientific explanations for beliefs affect people's confidence that those beliefs are true? For example, do people think neuroscience-based explanations for belief in God support or challenge God's existence? In five experiments, we find that people tend to think explanations for beliefs corroborate those beliefs if the explanations invoke normally-functioning mechanisms, but not if they invoke abnormal functioning (where “normality” is a matter of proper functioning). This emerges across a variety of kinds of scientific explanations and beliefs (religious, moral, (...) and scientific). We also find evidence that these effects can interact with people's prior beliefs to produce motivated judgments. (shrink)

Evolutionary debunking arguments draw on claims about the biological origins of our moral beliefs to undermine moral realism. In this paper, I argue that moral disagreement gives us reason to doubt the evolutionary explanations of moral judgment on which such arguments rely. The extent of cross-cultural and historical moral diversity suggests that evolution can’t explain the content of moral norms. Nor can it explain the capacity to make moral judgment in the way the debunker requires: empirical studies of folk moral (...) judgments show that they lack the kind of objectivity debunkers point to as an evolutionary contribution to our capacity for moral judgment. Thus, the empirical premise of debunking arguments lacks empirical support. (shrink)

I argue that information about the distal causes of moral beliefs, such as evolution, is only relevant for assessing the epistemic status of moral beliefs in cases where we cannot determine whether the proximal processes producing these beliefs are reliable just by examining the properties of these proximal processes. Any investigation into the epistemic status of moral beliefs given their causes should start with a look at proximal causes—not at evolution. I discuss two proximal psychological influences on moral beliefs—disgust and (...) sympathy—to demonstrate the feasibility of drawing epistemic conclusions from an examination of proximal causes alone. (shrink)

ABSTRACT Ethical and political attitudes are not randomly distributed in a population. Attitudes of family members, for example, tend to be more similar than those of a random sample of the same size. In the fields of social psychology and political science, the historically standard explanation for these attitude distribution patterns was that social and political attitudes are a function of environmental factors like parental socialization and prevailing social norms. This received view is, however, complicated by more recent work in (...) behavioral genetics, which consistently and repeatedly demonstrates that certain ethical and political attitudes dealing with issues like censorship, abortion, capital punishment, and immigration policy have a significant heritability coefficient, to wit, a substantial percentage of attitude variance in a population can be attributed to genetic variance, independent of environmental factors. In this paper, I argue that the genetic influence on our ethical and political attitudes is mediated by what we can agree to be irrelevant and distorting factors that can lead moral reasoning astray. Further, I argue that we should significantly lower our credences in ethical and political attitudes that fall within the domains of belief that involve significant genetic influence. (shrink)

Epistemological objections to moral realism allege that realism entails moral skepticism. Many philosophers have assumed that theistic moral realists can easily avoid such objections. In this article, I argue that things are not so easy: theists run the risk of violating an important constraint on replies to epistemological objections, according to which replies to such objections may not rely on substantive moral claims of a certain kind. Yet after presenting this challenge, I then argue that theists can meet it, successfully (...) replying to the objections without relying on the problematic kinds of substantive moral claims. Theists have a distinctive and plausible reply to epistemological objections to moral realism. (shrink)

Evolutionary debunking arguments claim that evolution has influenced our moral faculties in such a way that, if moral realism is true, then we have no positive moral knowledge. I present several popular objections to the standard version of this argument, then give a new EDA that has clear advantages in responding to these objections. Whereas the Standard EDA argues that evolution has selected for many moral beliefs with certain contents, this New EDA claims that evolution has selected for one belief: (...) belief in the claim that categorical reasons exist. If moral realism is true, then this claim is entailed by all positive moral claims, and belief in it is defeated due to evolutionary influence. This entails that if realism is true, then we have no positive moral knowledge. While there may be objections against this New EDA, it is much stronger than the Standard EDA, and one realists ought to worry about. (shrink)

An important principle in the epistemology of disagreement is Independence, which states, “In evaluating the epistemic credentials of another’s expressed belief about P, in order to determine how (or whether) to modify my own belief about P, I should do so in a way that doesn’t rely on the reasoning behind my initial belief about P” (Christensen 2011, 1-2). I present a series of new counterexamples to both Independence and also a revised, more widely applicable, version of it. I then (...) formulate and endorse a third version of Independence that avoids those counterexamples. Lastly, I show how this third version of Independence reveals two new ways one may remain steadfast in the face of two real life disagreements: one about God’s existence and one about moral realism. (shrink)

This paper explores evolutionary debunking arguments as they arise in metaethics against moral realism and in philosophy of religion against naturalism. Both literatures have independently grappled with the question of which beliefs one may use to respond to a potential defeater. In this paper, I show how the literature on the argument against naturalism can help clarify and bring progress to the literature on moral realism with respect to this question. Of note, it will become clear that the objection that (...) the moral realist begs the question, when appealing to the truth of some of her moral beliefs, is unsuccessful. (shrink)

Many moral philosophers accept the Debunking Thesis, according to which facts about natural selection provide debunking explanations for certain of our moral beliefs. I argue that philosophers who accept the Debunking Thesis beg important questions in the philosophy of biology. They assume that past selection can explain why you or I hold certain of the moral beliefs we do. A position advanced by many prominent philosophers of biology implies that this assumption is false. According to the Negative View, natural selection (...) cannot explain the traits of individuals. Hence, facts about past selection cannot provide debunking explanations for any of our moral beliefs. The aim of this paper is to explore the conflict between the Debunking Thesis and the Negative View. (shrink)

Street formulated a Darwinian Dilemma for realist theories of value. Much criticism of her formulation of the dilemma targets the second horn, posed by the scientifically implausible assumption of a tracking relation between our attitudes and evaluative truth. This paper shows how a recent wave of metaethical realism, most prominently defended by Scanlon, succeeds without a tracking relation and thus avoids the Darwinian Dilemma in Street's formulation. However, Scanlon's approach, which builds on the concept of a reason relation and defends (...) a metaphysically pluralist, domain‐specific conception of truth, runs into another version of the Darwinian Dilemma. The problem is not that Scanlon's realism assumes a tracking relation but that it assumes what I call reason monolithism – the idea that there is one possible expression of the faculty of reason and that this cognitive faculty could not be otherwise, which is scientifically implausible on similar grounds. (shrink)

In this essay, I argue that, all else being equal, theism is more probable than naturalism on the assumption that human beings are able to arrive at a body of moral knowledge that is largely accurate and complete. I put forth this thesis on grounds that, if naturalism is true, the explanation of the content of our moral intuitions terminates either in biological-evolutionary processes or in social conventions adopted for pragmatic reasons; that, if this is so, our moral intuitions were (...) selected for their utility, not their truth; and that, if our moral intuitions were so selected, they are probably false. I defend the argument against three objections: first, that the argument amounts to a generic skeptical challenge; second, that ethical naturalism explains how our moral intuitions could have been selected for their truth; and third, that there is a pre-established harmony between the utility of moral beliefs and their truth-values. (shrink)

In this essay, I reply to an influential objection to evolutionary debunking arguments against moral realism. According to this objection, our capacity for autonomous rational reflection allows us to grasp moral truths independently of distorting evolutionary influences, so those influences do not prevent us from having moral knowledge. I argue that rational moral reflection is not, in fact, autonomous from evolutionary influences, since it depends on our evolved, pre-reflective grasp of moral properties. I then consider and reject the suggestion that (...) realists can supply an autonomous foundation for rational moral reflection or do without any such foundation. Next, I address the allegation that my arguments have skeptical implications for rational reflection in non-moral domains. Finally, I conclude with a gesture toward a more promising route for realists who oppose debunking arguments. (shrink)

Evolutionary Debunking Arguments purport to show that our moral beliefs do not amount to knowledge because these beliefs are “debunked” by the fact that our moral beliefs are, in some way, the product of evolutionary forces. But there is a substantial gap in this argument between its main evolutionary premise and the skeptical conclusion. What is it, exactly, about the evolutionary origins of moral beliefs that would create problems for realist views in metaethics? I argue that evolutionary debunking arguments are (...) best understood as offering up defeaters for our moral beliefs. Moreover, the defeater in question is a paradigmatic instance of undercutting defeat. If anything is an undercutting defeater, then learning about the evolutionary origins of our moral beliefs is a defeater for those beliefs. (shrink)

The focus of this paper is the following claim: as a purely conceptual matter, the moral truths could be pretty much anything, and we should assume this in assessing our reliability at grasping moral truths. This claim, which I call No Content, plays a key role in an important skeptical argument against realist moral knowledge – the Normative Lottery Argument. In this paper, I argue that moral realists can, and should, reject No Content. My argument centers on the idea of (...) practical intelligibility. I explore different aspects of practical intelligibility, and I argue that such intelligibility sets a constraint on the possibilities we should consider when assessing our reliability at grasping moral truths. (shrink)

In a series of influential essays, Sharon Street has argued, on the basis of Darwinian considerations, that normative realism leads to skepticism about moral knowledge. I argue that if we begin with the account of moral knowledge provided by Aristotelian naturalism, then we can offer a satisfactory realist response to Street’s argument, and that Aristotelian naturalism can avoid challenges facing other realist responses. I first explain Street’s evolutionary argument and three of the most prominent realist responses, and I identify challenges (...) to each of those responses. I then develop an Aristotelian response to Street. My core claim is this: Given Aristotelian naturalism’s account of moral truth and our knowledge of it, we can accept the influence of evolutionary processes on our moral beliefs, while also providing a principled, non-question-begging reason for thinking that those basic evaluative tendencies that evolution has left us with will push us toward, rather than away from, realist moral truths, so that our reliably getting things right does not require an unexplained and implausible coincidence. (shrink)