Debunking arguments are an important species of undermining argument, in which facts about the origins of a judgement are used to explain away that judgement. There is a long history of debunking arguments in the domains of moral judgement and religious belief, from the early Christian fathers to Sigmund Freud and beyond. Debunking arguments work by offering a truth-mooting genealogy of the judgement in question, where the truth of the judgement doesn’t play a role (...) in generating the judgement, nor does the genealogy probabilify the judgement. Since debunking arguments work against judgements, we can only use them in the domains of morality and religion if we assume cognitivism for those domains. There may be, however, analogous dialectic moves if we instead assume non-cognitivism. (shrink)

Debunking arguments—also known as etiological arguments, genealogical arguments, access problems, isolation objec- tions, and reliability challenges—arise in philosophical debates about a diverse range of topics, including causation, chance, color, consciousness, epistemic reasons, free will, grounding, laws of nature, logic, mathematics, modality, morality, natural kinds, ordinary objects, religion, and time. What unifies the arguments is the transition from a premise about what does or doesn't explain why we have certain mental states to a negative assessment (...) of their epistemic status. I examine the common, underlying structure of the arguments and the different strategies for motivating and resisting the premises of debunking arguments. (shrink)

In this crisply written book, Hanno Sauer offers the first book-length treatment of debunking arguments in ethics, developing an empirically informed and philosophically sophisticated account of genealogical arguments and their significance for the reliability of moral cognition. He breaks new ground by introducing a series of novel distinctions into the current debate, which allows him to develop a framework for assessing the prospects of debunking or vindicating our moral intuitions. He also challenges the justification of (...) some of our moral judgments by showing that they are based on epistemically defective processes. His book is an original, cutting-edge contribution to the burgeoning field of empirically informed metaethics, and will interest philosophers, psychologists, and anyone interested in how - and whether - moral judgment works. (shrink)

I discuss the structure of genealogical debunking arguments. I argue that they undermine our mathematical beliefs if they undermine our moral beliefs. The contrary appearance stems from a confusion of arithmetic truths with (first-order) logical truths, or from a confusion of reliability with justification. I conclude with a discussion of the cogency of debunking arguments, in light of the above. Their cogency depends on whether information can undermine all of our beliefs of a kind, F, (...) without giving us direct reason to doubt that our F-beliefs are modally secure. (shrink)

The so-called Evolutionary Debunking Arguments are arguments that appeal to the evolutionary genealogy of our beliefs to undermine their justification. When applied to morality, such arguments are intended to undermine moral realism. In this paper I will discuss Andreas Mogensen’s recent effort to secure moral realism against EDAs. Mogensen attempts to undermine the challenge provided by EDAs in metaethics through the distinction between proximate and ultimate causes in biology. The problem with this move is that the (...) proximate/ultimate distinction is misconceived. If ultimate and proximate causes are properly understood to be complementary, such distinction cannot affect EDAs in metaethics. Therefore, I will argue, Mogensen’s argument fails and moral realism is still in danger. (shrink)

There are at least three different genealogical accounts of morality: the ontogenetic, the sociohistorical, and the evolutionary. One can thus construct, in principle, three distinct genealogical debunking arguments of morality, i.e., arguments that appeal to empirical data, or to an empirical hypothesis, about the origin of morality to undermine either its ontological foundation or the epistemic credentials of our moral beliefs. The genealogical account that has been, particularly since the early 2000s, the topic of (...) a burgeoning line of inquiry in the metaethical literature is the one that explains the origin of moral thinking by appealing to Charles Darwin’s theory of evolution through natural selection. For this reason, when it comes to genealogical debunking arguments, it is various types of evolutionary debunking argument (EDA) that are the focus of the current debate between moral skeptics and moral realists. Evolutionary moral debunkers maintain that the capacity to make moral judgments is an evolved trait—a view accepted by most of their detractors. They maintain, in addition, that such a capacity is an adaptation—i.e., a trait selected for because it enhances reproduction and survival—and not merely either a by-product of an adaptation or an evolutionary accident—a view accepted by fewer of their detractors. Roughly put, the thrust of EDAs is that biological evolution is aimed, not at moral belief-forming processes that are reliable, but at moral belief-forming processes that are adaptive. In other words, the evolutionary function of those processes is not that of tracking the moral truth: their general success at matching or accurately representing allegedly objective or attitude-independent moral facts, properties, or truths explains neither their emergence nor their persistence. Humans are therefore disposed to make moral judgments regardless of the evidence to which they are exposed, regardless of whether there are or are not objective moral facts, properties, or truths. In the contemporary scene, the most important and influential EDAs are those advanced by Richard Joyce and Sharon Street. Although Joyce’s EDA is more elaborate than Street’s inasmuch as it is based on a detailed evolutionary account of morality, it is Street’s EDA that has received the most attention among those seeking to defend moral realism against EDAs. If an EDA can establish at most an epistemological conclusion, then it could be argued that Joyce’s argument (at least the version defended in his later works) is superior to Street’s given that the conclusion of the former is epistemological whereas that of the latter is ontological. Indeed, while Joyce’s EDA is taken to support epistemological moral skepticism, according to which our moral beliefs are epistemically unjustified, Street’s is taken to support moral anti-realism (moral constructivism in particular), according to which attitude-independent moral facts do not exist. (shrink)

There is an ever-growing literature on what exactly the condition or criterion is that enables some (but not all) debunking arguments to undermine our beliefs. In this paper, I develop a novel schema for debunking argumentation, arguing that debunking arguments generally have a simple and valid form, but that whether or not they are sound depends on the particular aetiological explanation which the debunker provides in order to motivate acceptance of the individual premises. The schema (...) has three unique features: (1) it satisfies important desiderata for what any acceptable account of debunking would have to look like; (2) it is consistent with the inductively supported claim that there is no special debunking principle; and (3) it coheres with the plausible claim that what makes debunking arguments unique is that they rely on so-called genealogies for the justification of their premises. (shrink)

Evolutionary Debunking Arguments are defined as arguments that appeal to the evolutionary genealogy of our beliefs to undermine their justification. Recently, Helen De Cruz and her co-authors supported the view that EDAs are self-defeating: if EDAs claim that human arguments are not justified, because the evolutionary origin of the beliefs which figure in such arguments undermines those beliefs, and EDAs themselves are human arguments, then EDAs are not justified, and we should not accept their (...) conclusions about the fact that human arguments are unjustified. De Cruz's objection to EDAs is similar to the objection raised by Reuben Hersh against the claim that, since by Gödel's second incompleteness theorem the purpose of mathematical logic to give a secure foundation for mathematics cannot be achieved, mathematics cannot be said to be absolutely certain. The response given by Carlo Cellucci to Hersh's objection shows that the claim that by Gödel's results mathematics cannot be said to be absolutely certain is not self-defeating, and can be adopted to show that EDAs are not self-defeating as well in a twofold sense: an argument analogous to Cellucci's one may be developed to face De Cruz's objection, and such argument may be further refined incorporating Cellucci's response itself in it, to make it stronger. This paper aims at showing that the accusation of being self-defeating moved against EDAs is inadequate by elaborating an argument which can be considered an EDA and which can also be shown not to be self-defeating. (shrink)

Evolutionary debunking arguments use the evolutionary origins of our moral attitudes to argue that our moral beliefs are not explained by realistically construed moral facts, and that our moral beliefs are therefore unjustified. Third-factor replies to debunking argument rely on substantive moral claims to argue that, even if our moral beliefs are not explained moral facts, they are explained by some third-factor that also explains those moral facts. This is supposed to show that our moral beliefs can (...) be justified even given the debunker’s evolutionary genealogy of those beliefs. In this paper I argue that third-factor replies fail. First, I argue that our belief is defeated if we withhold belief that it is explained by the fact that makes it true or by some third-factor that also explains that fact. I then argue that the third-factor replier cannot consistently take our beliefs about basic moral principles to be explained by some such third-factor because of the concession they make in response to debunking arguments and the meta-ethical view they are looking to defend. This implies that the third-factor replier’s beliefs about basic moral principles are defeated. Furthermore, we cannot take non-basic moral beliefs to be explained by some such third-factor if we withhold our basic moral beliefs, and so the third-factor replier’s non-basic moral beliefs are also defeated. Thus, the third-factor replier ought to withhold their moral beliefs in response to debunking arguments and, because their arguments rely crucially on moral claims, those arguments fail. (shrink)

One of the most surprisingly prominent themes in Robert Brandom’s A Spirit of Trust is the role of genealogical explanations. Brandom sees genealogies or ‘debunking arguments’ as significant because of their ability to deprive our discursive acts of the normative status they require to be genuinely discursive or conceptual. His solution to the problem of genealogy is to offer rationalizing reconstructions of others’ discursive acts, which credit them with normative status. He calls this “forgiveness”. In this paper, (...) I provide some additional conceptual resources to explicate Brandom’s notions of genealogy and forgiveness. These resources allow me to discriminate between two alternate and seemingly incompatible ways of responding to genealogies. One way depends on rationalizing explanations that still attempt to attribute commitments to their subjects, the other avoids making such attributions in favor of explaining commitments only in terms of norms accepted by the rationalizer. I argue that Brandom’s work sometimes promotes the latter response to genealogy but that this tendency should be eliminated from the account. (shrink)

Nietzsche’s On the Genealogy of Morality (GM) is often interpreted as providing a debunking argument of some kind. I consider different versions of such arguments and suggest that they face important challenges. Moving beyond debunking interpretations of GM, I consider Nietzsche’s claim that his genealogy should be used to assess the “value” of moral values. After explaining how to understand this claim, I consider different ways that history might be used to assess the value of beliefs, practices, (...) and institutions. The upshot is a general account of genealogy beyond debunking. (shrink)

Genealogies of belief have dominated recent philosophical discussions of genealogical debunking at the expense of genealogies of concepts, which has in turn focused attention on genealogical debunking in an epistemological key. As I argue in this paper, however, this double focus encourages an overly narrow understanding of genealogical debunking. First, not all genealogical debunking can be reduced to the debunking of beliefs—concepts can be debunked without debunking any particular belief, just (...) as beliefs can be debunked without debunking the concepts in terms of which they are articulated. Second, not all genealogical debunking is epistemological debunking. Focusing on concepts rather than beliefs brings distinct forms of genealogical debunking to the fore that cannot be comprehensively captured in terms of epistemological debunking. We thus need a broader understanding of genealogical debunking, which encompasses not just epistemological debunking, but also what I shall refer to as metaphysical debunking and ethical debunking. (shrink)

In his précis of a recent book, Richard Joyce writes, “My contention…is that…any epistemological benefit-of-the-doubt that might have been extended to moral beliefs…will be neutralized by the availability of an empirically confirmed moral genealogy that nowhere…presupposes their truth.” Such reasoning – falling under the heading “Genealogical Debunking Arguments” – is now commonplace. But how might “the availability of an empirically confirmed moral genealogy that nowhere… presupposes” the truth of our moral beliefs “neutralize” whatever “epistemological benefit-of-the-doubt that might (...) have been extended to” them? In this article, I argue that there appears to be no satisfactory answer to this question. The problem is quite general, applying to all arguments with the structure of Genealogical Debunking Arguments aimed at realism about a domain meeting two conditions. The Benacerraf-Field Challenge for mathematical realism affords an important special case. (shrink)

On explanationist accounts of genealogical debunking, roughly, a belief is debunked when its explanation is not suitably related to its content. We argue that explanationism cannot accommodate cases in which beliefs are explained by factors unrelated to their contents but are nonetheless independently justified. Justification-specific versions of explanationism face an iteration of the problem. The best account of debunking is a probabilistic account according to which subject S’s justification J for their belief that P is debunked when (...) S learns that J is no more likely to be true on the hypothesis that P than on the hypothesis that ¬P. The probabilistic criterion is fully general, applying not only to cases where the learned undercutting defeater is a proposition about our beliefs or other mental states but to any case of undercutting defeat, providing the grounds for a debunking argument against the existence of a special, metacognitive debunking principle. (shrink)

Evolutionary debunking arguments (EDAs) have attracted extensive attention in meta-ethics, as they pose an important challenge to moral realism. Mogensen (2015) suggests that EDAs contain a fallacy, by confusing two distinct forms of biological explanation – ultimate and proximate. If correct, the point is of considerable importance: evolutionary genealogies of human morality are simply irrelevant for debunking. But we argue that the actual situation is subtler: while ultimate claims do not strictly entail proximate ones, there are important (...) evidential connections between the two. Attending to these connections clears ground for a new and improved EDA. However, it also brings into view some possible problems with EDAs that have been largely neglected so far. (shrink)

Objective chance and morality are rarely discussed together. In this paper, I argue that there is a surprising similarity in the epistemic standing of our beliefs about both objective chance and objective morality. The key similarity is that both of these sorts of belief are undermined -- in a limited, but important way -- by plausible genealogical accounts of the concepts that feature in these beliefs. The paper presents a brief account of Richard Joyce's evolutionary hypothesis of the genealogy (...) of morality, and refines the debunking argument which he consequently mounts against moral beliefs. The evolutionary hypothesis in question suggests that we could easily have failed to believe that moral judgments have a peculiarly categorical force. This aspect of our moral belief, then, is unreliable. The paper then turns to chance, and presents a more speculative hypothesis about the cultural evolution of ideas about chance, as a peculiarly physical and objective form of probability. It is argued that, in the same way that our beliefs about morality could easily have lacked the commitment to inescapable force, our beliefs about chance could easily have lacked various idiosyncratic commitments. By a similar argument then, these aspects of our chance beliefs are unreliable. In the final section of the paper, I review some recent objections to genealogical debunking arguments, due to Roger White and Guy Kahane, showing how the form of argument developed in this paper is immune to these criticisms. (shrink)

Arguments attempting to debunk moral beliefs, by showing they are unjustified, have tended to be global, targeting all moral beliefs or a large set of them. Popular debunking arguments point to various factors purportedly influencing moral beliefs, from evolutionary pressures, to automatic and emotionally-driven processes, to framing effects. We show that these sweeping arguments face a debunker’s dilemma: either the relevant factor is not a main basis for belief or it does not render the relevant beliefs (...) unjustified. Empirical debunking arguments in ethics can avoid this predicament, but only if they are refocused on highly selective classes of moral belief. Experimental data can combine with familiar consistency reasoning to reveal that like cases are not being treated alike. Selective debunking arguments are unlikely to yield sweeping sceptical conclusions, but they can lead to rational moral change. (shrink)

One the most interesting debates in moral philosophy revolves around the significance of empirical moral psychology for moral philosophy. Genealogical arguments that rely on empirical findings about the origins of moral beliefs, so-called debunking arguments, take center stage in this debate. Looking at debunking arguments based on evidence from evolutionary moral psychology, experimental ethics and neuroscience, this book explores what ethicists can learn from the science of morality, and what they cannot. Among other things, (...) the book offers a new take on the deontology/utilitarianism debate, discusses the usefulness of experiments in ethics, investigates whether morality should be thought of as a problem-solving device, shows how debunking arguments can tell us something about the structure of philosophical debate, and argues that debunking arguments lead to both moral and prudential skepticism. Presenting a new picture of the relationship between empirical moral psychology and moral philosophy, this book is essential reading for moral philosophers and moral psychologists alike. (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)

The empirical literature seems to indicate that prehistoric humans did not believe in God or anything like God. Why is that so, if God exists? The problem is difficult because their nonbelief was natural: their evolved mind and cultural environment restricted them to concepts of highly limited supernatural agents. Why would God design their mind and place them in their environments only to hide from them? The natural nonbelief of prehistoric humans is much more surprising given theism than naturalism. Thus, (...) it constitutes strong evidence that theism is false, or so Jason Marsh (2013) has argued. The "problem of natural nonbelief" is a debunking argument that invokes the genealogy of religious belief to cast doubt upon theism. In this chapter, we put it to the test. First, we argue on empirical grounds that it is not clear that natural nonbelief was prevalent: the empirical jury is still out on what prehistoric humans believed about gods. Second, we argue that even if natural nonbelief was prevalent, it would not be very surprising given theism. We conclude that natural nonbelief presents no problem for theism. We also turn the tables and suggest that the real problem is the problem of widespread belief in a High God (common consent), which is a problem for naturalism. (shrink)

Facts about the evolutionary origins of morality may have some kind of undermining effect on morality, yet the arguments that advocate this view are varied not only in their strategies but in their conclusions. The most promising such argument is modest: it attempts to shift the burden of proof in the service of an epistemological conclusion. This paper principally focuses on two other debunking arguments. First, I outline the prospects of trying to establish an error theory on (...) genealogical grounds. Second, I discuss how a debunking strategy can work even under the assumption that non‐cognitivism is true. (shrink)

Facts about the evolutionary origins of morality may have some kind of undermining effect on morality, yet the arguments that advocate this view are varied not only in their strategies but in their conclusions. The most promising such argument is modest: it attempts to shift the burden of proof in the service of an epistemological conclusion. This paper principally focuses on two other debunking arguments. First, I outline the prospects of trying to establish an error theory on (...) genealogical grounds. Second, I discuss how a debunking strategy can work even under the assumption that noncognitivism is true. (shrink)

The aim of this article is to identify the strongest evolutionary debunking argument against moral realism and to assess on which empirical assumptions it relies. In the recent metaethical literature, several authors have de-emphasized the evolutionary component of EDAs against moral realism: presumably, the success or failure of these arguments is largely orthogonal to empirical issues. I argue that this claim is mistaken. First, I point out that Sharon Street’s and Michael Ruse’s EDAs both involve substantive claims about (...) the evolution of our moral judgments. Next, I argue that combining their respective evolutionary claims can help debunkers to make the best empirical case against moral realism. Some realists have argued that the very attempt to explain the contents of our endorsed moral judgments in evolutionary terms is misguided, and have sought to escape EDAs by denying their evolutionary premise. But realists who pursue this reply can still be challenged on empirical grounds: debunkers may argue that the best, scientifically informed historical explanations of our moral endorsements do not involve an appeal to mind-independent truths. I conclude, therefore, that the empirical considerations relevant for the strongest empirically driven argument against moral realism go beyond the strictly evolutionary realm; debunkers are best advised to draw upon other sources of genealogical knowledge as well. (shrink)

Abstract: In The Evolution of Morality, Richard Joyce argues there is good reason to think that the “moral sense” is a biological adaptation, and that this provides a genealogy of the moral sense that has a debunking effect, driving us to the conclusion that “our moral beliefs are products of a process that is entirely independent of their truth, … we have no grounds one way or the other for maintaining these beliefs.” I argue that Joyce's skeptical conclusion is (...) not warranted. Even if the moral sense is a biological adaptation, developed moralities (such as Aristotelian eudaimonism) can “co-opt” it into new roles so that the moral judgments it makes possible can come to transcend the evolutionary process that is “entirely independent of their truth.” While evolutionary theory can shed much light on our shared human nature, moral theories must still be vindicated, or debunked, by moral arguments. (shrink)

Evolutionary debunking arguments are arguments that appeal to the evolutionary origins of evaluative beliefs to undermine their justification. This paper aims to clarify the premises and presuppositions of EDAs—a form of argument that is increasingly put to use in normative ethics. I argue that such arguments face serious obstacles. It is often overlooked, for example, that they presuppose the truth of metaethical objectivism. More importantly, even if objectivism is assumed, the use of EDAs in normative ethics (...) is incompatible with a parallel and more sweeping global evolutionary debunking argument that has been discussed in recent metaethics. After examining several ways of responding to this global debunking argument, I end by arguing that even if we could resist it, this would still not rehabilitate the current targeted use of EDAs in normative ethics given that, if EDAs work at all, they will in any case lead to a truly radical revision of our evaluative outlook. (shrink)

Do the cognitive origins of our theistic beliefs debunk them or explain them away? This paper develops an empirically-motivated debunking argument and defends it against objections. First, we introduce the empirical and epistemological background. Second, we develop and defend the main argument, the debunking argument from false god beliefs. Third, we characterize and evaluate the most prominent religious debunking argument to date, the debunking argument from insensitivity. It is found that insensitivity-based arguments are problematic, which (...) makes them less promising than the debunking argument from false god beliefs. (shrink)

I argue that one’s views about which “metaphysical laws” obtain—including laws about what is identical with what, about what is reducible to what, and about what grounds what—can be used to deflect or neutralize the threat posed by a debunking explanation. I use a well-known debunking argument in the metaphysics of material objects as a case study. Then, after defending the proposed strategy from the charge of question-begging, I close by showing how the proposed strategy can be used (...) by certain moral realists to resist the evolutionary debunking arguments. (shrink)

Evolutionary debunking arguments appeal to selective etiologies of human morality in an attempt to undermine moral realism. But is morality actually the product of evolution by natural selection? Although debunking arguments have attracted considerable attention in recent years, little of it has been devoted to whether the underlying evolutionary assumptions are credible. In this paper, we take a closer look at the evolutionary hypotheses put forward by two leading debunkers, namely Sharon Street and Richard Joyce. We (...) raise a battery of considerations, both empirical and theoretical, that combine to cast doubt on the plausibility of both hypotheses. We also suggest that it is unlikely that there is in the vicinity a plausible alternative hypothesis suitable for the debunker’s cause. (shrink)

Recent debate in metaethics over evolutionary debunking arguments against morality has shown a tendency to abstract away from relevant empirical detail. Here, I engage the debate about Darwinian debunking of morality with relevant empirical issues. I present four conditions that must be met in order for it to be reasonable to expect an evolved cognitive faculty to be reliable: the environment, information, error, and tracking conditions. I then argue that these conditions are not met in the case (...) of our evolved faculty for moral judgement. (shrink)

Heightened awareness of the origins of our moral judgments pushes many in the direction of moral skepticism, in the direction of thinking we are unjustified in holding our moral judgments on a realist understanding of the moral truths. A classic debunking argument fleshes out this worry: the best explanation of our moral judgments does not appeal to their truth, so we are unjustified in holding our moral judgments. But it is unclear how to get from the explanatory premise to (...) the debunking conclusion. This paper shows how to get from here to there by way of epistemic insensitivity. First, we reconstruct Richard Joyce’s evolutionary debunking argument from insensitivity. Second, we raise epistemological difficulties for Joyce’s argument. Third, we develop and defend a new debunking argument from insensitivity. (shrink)

Evolutionary debunking arguments abound, but it is widely assumed that they do not arise for our perceptual beliefs about midsized objects, insofar as the adaptive value of our object beliefs cannot be explained without reference to the objects themselves. I argue that this is a mistake. Just as with moral beliefs, the adaptive value of our object beliefs can be explained without assuming that the beliefs are accurate. I then explore the prospects for other sorts of vindications of (...) our object beliefs—which involve “bootstrapping” from our experiences as of midsized objects—and I defend bootstrapping maneuvers against a variety of objections. Finally, I argue for an explanatory constraint on legitimate bootstrapping and show how some attempts to respond to debunking arguments run afoul of the constraint. (shrink)

In his influential book, The Nature of Morality, Gilbert Harman writes: “In explaining the observations that support a physical theory, scientists typically appeal to mathematical principles. On the other hand, one never seems to need to appeal in this way to moral principles.” What is the epistemological relevance of this contrast, if genuine? This chapter argues that ethicists and philosophers of mathematics have misunderstood it. They have confused what the chapter calls the justificatory challenge for realism about an area, D—the (...) challenge to justify our D-beliefs—with the reliability challenge for D-realism—the challenge to explain the reliability of our D-beliefs. Harman’s contrast is relevant to the first, but not, evidently, to the second. One upshot of the discussion is that genealogical debunking arguments are fallacious. Another is that indispensability considerations cannot answer the Benacerraf–Field challenge for mathematical realism. (shrink)

This chapter explores global debunking arguments, debunking arguments that aim to give one a global defeater. I defend Alvin Plantinga’s view that global defeaters are possible and, once gained, are impossible to escape by reasoning. They thereby must be extinguished by other means: epistemically propitious actions, luck, or grace. I then distinguish between three types of global defeater—pure-undercutters, undercutters-because-rebutters, and undercutters-while-rebutters—and systematically consider how one can deflect such defeaters. Lastly, since I draw insights from the literature (...) on perhaps the most widely discussed global debunking argument in the literature, Plantinga’s evolutionary argument against naturalism, I end up responding to many potential problems for it. This includes the so-called conditionalization problem, as well as those raised by Bergmann (2002), Law (2012), Deem (2018), Hendricks and Anderson (2020), and Wielenberg (in Craig and Wielenberg (2021)). (shrink)

Evolutionary debunking arguments against religious beliefs move from the claim that religious beliefs are caused by off-track processes to the conclusion that said religious beliefs are unjustified and/or false. Prima facie, EDAs commit the genetic fallacy, unduly conflating the context of discovery and the context of justification. In this paper, we first consider whether EDAs necessarily commit the genetic fallacy, and if not, whether modified EDAs provide successful arguments against theism. Then, we critically evaluate more recent attempts (...) to argue that a more promiscuous evolutionary scepticism renders religious belief unjustified because, unlike commonsense and scientific beliefs, religious beliefs have no way out of such scepticism. (shrink)

Many people believe that human interests matter much more than the like interests of non-human animals, and this “speciesist belief” plays a crucial role in the philosophical debate over the moral status of animals. In this paper, I develop a debunking argument against it. My contention is that this belief is unjustified because it is largely due to an off-track process: our attempt to reduce the cognitive dissonance generated by the “meat paradox”. Most meat-eaters believe that it is wrong (...) to harm animals unnecessarily, yet they routinely and deliberately behave in ways that cause great unnecessary suffering to animals. As recent research suggests, this practical inconsistency puts them in an unpleasant state of dissonance, which they try to escape by resolving the paradox. And they do so in part by adopting the speciesist belief—if animal suffering matters much less than human suffering, then harming animals cannot be so wrong after all. Since this belief-forming process does not track moral truth, I conclude that we are not justified in believing that human interests matter more than the similar interests of non-humans. (shrink)

Cognitive science of religion (CSR) has inspired a number of debunking arguments against god-belief. They aim to show that the belief-forming processes that underlie belief in god(s) are unreliable. The debate surrounding these arguments gives the impression that CSR offers new scientific evidence that threatens the rationality of religious belief. This impression, however, is partly misleading. A close look at a few widely discussed debunking arguments shows, first, that CSR theories as such are far from (...) providing sufficient empirical evidence that the belief-forming processes behind god-belief are unreliable. Thus, appealing solely to CSR theories makes a debunking argument weak. Second, there are strong arguments that also invoke CSR, but these gain their strength primarily from more familiar claims about evolutionary epistemology and religious diversity. What CSR actually does in these arguments is providing an explanation of why people might believe in gods even if gods did not exist. But explaining is not debunking. (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)

Many philosophers believe that natural selection explanations debunk our moral beliefs or would do so if moral realism were true, relying on the assumption that explanations of this kind show that moral facts play no role in explaining human moral beliefs. Here I argue that this assumption rests on a confusion of proximate and ultimate explanatory factors. Insofar as evolutionary debunking arguments hinge on the assumption that moral facts play no role in explaining human moral beliefs, these (...) class='Hi'>arguments fall short. (shrink)

This paper argues that Nietzsche is a critic of just the kind of genealogical debunking he is popularly associated with. We begin by showing that interpretations of Nietzsche which see him as engaging in genealogical debunking turn him into an advocate of nihilism, for on his own premises, any truthful genealogical inquiry into our values is going to uncover what most of his contemporaries deem objectionable origins and thus license global genealogical debunking. To (...) escape nihilism and make room for naturalism without indiscriminate subversion, we then argue, Nietzsche targets the way of thinking about values that permits genealogical debunking: far from trying to subvert values simply by uncovering their origins, Nietzsche is actively criticising genealogical debunking thus understood. Finally, we draw out the consequences of our reading for Nietzsche’s positive vision. (shrink)

Evolutionary debunking arguments seek to infer from the evolutionary origin of human beliefs about a particular domain to the conclusion that those beliefs are unjustified. In this paper I discuss EDAs with respect to our everyday, commonsense beliefs. Those who seriously entertain EDAs for commonsense argue that natural selection does not care about truth, it only cares about fitness, and thus it will equip us with beliefs that are useful rather than true. In recent work Griffiths and Wilkins (...) argue that this is a mistake. Fitness-tracking and truth-tracking are not rival, but rather potentially complementary, hypotheses about the function of our cognitive belief-forming systems. It may be that those systems maximise fitness by tracking the truth. I argue that while they are right about the standard EDAs for commonsense, the threat of evolutionary scepticism remains, because cognitive systems whose function is to track the truth may still be highly unreliable. I propose an alternative, Moorean approach to vindicating our commonsense picture of the world and dispelling the threat of scepticism. Once this has been established, however, we may appeal to evolution to explain the good fit between our cognition and the world. I thus propose that an evolutionary explanatory project ought to replace the troubled evolutionary justificatory project. This ought to be appealing to those such as Griffiths and Wilkins who seek a naturalistic non-sceptical account of our commonsense beliefs and their origins. (shrink)

May assumes that if moral beliefs are counterfactually dependent on irrelevant factors, then those moral beliefs are based on defective belief-forming processes. This assumption is false. Whether influence by irrelevant factors is debunking depends on the mechanisms through which this influence occurs. This raises the empirical bar for debunkers and helps May avoid an objection to his Debunker’s Dilemma.

Rather than set out an overarching view or take a stand on the debunking of morality tout court, in what follows I’ll explore a divide and conquer strategy. First, I will briefly sketch a debunking argument that, instead of targeting all of morality or human moral nature, has a more narrow focus—namely, the intuitive moral authority of disgust. The argument concludes that as vivid and compelling as they can be while one is in their grip, feelings of disgust (...) should be granted no power to justify moral judgments. Importantly, the argument is grounded in empirical advances concerning the character of the emotion itself. Next, I will step back and consider the argument’s general form. I then point to arguments that others have made that seem to share this form and selective focus, and comment on what such arguments do and do not presuppose. Finally, I locate the selective strategy with respect to other approaches moral debunking. (shrink)

This article responds to an argument from Katarzyna de Ladari-Radek and Peter Singer in their article, "The Objectivity of Ethics and the Unity of Practical Reason.".

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 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)

According to one influential response to evolutionary debunking arguments against moral realism, debunking arguments fail to undermine our moral beliefs because they fail to imply that those beliefs are insensitive or unsafe. The position that information about the explanatory history of our belief must imply that our beliefs are insensitive or unsafe in order to undermine those beliefs has been dubbed “Modal Security”, and I therefore label this style of response to debunking arguments the (...) “modal security response”. An alternative position, that our beliefs can be defeated if we accept those beliefs are not explained by the relevant facts, I call “explanationism”. In this article, I argue against Modal Security in favour of explanationism. First, I present two examples from the literature that appear to support explanationism, and I argue that these examples imply that the modal security response is fundamentally misguided about the nature of epistemic defeat. I then consider a recent response from Justin Clarke-Doane and Dan Baras, who claim that examples of this kind fail because they are either incoherent or involve a failure of modal security. I argue that, due to their position on the failure of evolutionary debunking arguments, Clarke Doane and Dan Baras are committed to the existence of coherent, sufficiently simple examples that can help us arbitrate between explanationism and modal security. I then construct such an example and argue that it clearly indicates that we should reject Modal Security in favour of explanationism. This implies the modal security response to debunking arguments fails. (shrink)

If someone disagrees with my moral views, or more generally if I’m in a group of n people who all disagree with each other, but I don’t have any special evidence or basis for my epistemic superiority, then it’s at best a 1-in-n chance that my views are correct. The skeptical threat from disagreement is thus a kind of moral lottery, to adapt a similar metaphor from Sharon Street. Her own genealogical debunking argument, as I discuss, relies on (...) a premise of such disagreement among evolutionary counterparts. -/- In this paper, I resist the threat from disagreement by showing that, on some of the most influential and most attractive theories of content determination, the premise of moral disagreement cannot serve any skeptical or revisionary purposes. I examine and criticize attempts, made by Gilbert Harman and Sharon Street, to argue from disagreement to relativism by relying on a theory of content determination that involves a principle that, within certain constraints, maximizes the attribution to us of true beliefs. And I examine and criticize Robert Williams’s attempt to show there is moral disagreement by relying on a theory of content determination that involves a principle that instead maximizes the attribution to us of rationality. My overall aim is to defend commonsense moral realism via a careful look at the theory of content and concepts. (shrink)

Ever since Darwin people have worried about the sceptical implications of evolution. If our minds are products of evolution like those of other animals, why suppose that the beliefs they produce are true, rather than merely useful? We consider this problem for beliefs in three different domains: religion, morality, and commonsense and scientific claims about matters of empirical fact. We identify replies to evolutionary scepticism that work in some domains but not in others. One reply is that evolution can be (...) expected to design systems that produce true beliefs in some domain. This reply works for commonsense beliefs and can be extended to scientific beliefs. But it does not work for moral or religious beliefs. An alternative reply which has been used defend moral beliefs is that their truth does not consist in their tracking some external state of affairs. Whether or not it is successful in the case of moral beliefs, this reply is less plausible for religious beliefs. So religious beliefs emerge as particularly vulnerable to evolutionary debunking. (shrink)