How should one react when one has a belief, but knows that other people—who have roughly the same evidence as one has, and seem roughly as likely to react to it correctly—disagree? This paper argues that the disagreement of other competent inquirers often requires one to be much less confident in one’s opinions than one would otherwise be.

This paper explores the application of hinge epistemology to deep disagreement. Hinge epistemology holds that there is a class of commitments—hinge commitments—which play a fundamental role in the structure of belief and rational evaluation: they are the most basic general ‘presuppositions’ of our world views which make it possible for us to evaluate certain beliefs or doubts as rational. Deep disagreements seem to crucially involve disagreements over such fundamental commitments. In this paper, I consider pessimism about deep (...) disagreement, the thesis that such disagreements are rationally irresolvable, and ask whether the Wittgensteinian account of deep disagreement—according to which such disagreements are disagreements over hinge commitments—provides adequate support for pessimism. I argue that the answer to this question depends on what hinge commitments are and what our epistemic relation to them is supposed to be. I argue for two core claims. First, that non-epistemic theories of hinge commitments provide adequate support for pessimism. Nevertheless, such theories have highly implausible consequences in the context of deep disagreement. Secondly, at least one epistemic theory of hinge commitments, the entitlement theory, permits optimism about such disagreements. As such, while hinge epistemology is mainly pessimistic about deep disagreement, it doesn’t have to be. (shrink)

What is the epistemological significance of deep disagreement? Part I explored the nature of deep disagreement, while Part II considers its epistemological significance. It focuses on two core problems: the incommensurability and the rational resolvability problems. We critically survey key responses to these challenges, before raising worries for a variety of responses to them, including skeptical, relativist, and absolutist responses to the incommensurability problem, and to certain steadfast and conciliatory responses to the rational resolvability problem. We then pivot (...) to the ethical and political dimensions of deep disagreement. We focus on whether an unwillingness to engage with positions one considers to be immoral or repugnant might be good, and conclude with some reflections on the moral risks of engagement. (shrink)

What is the epistemological significance of deep disagreement? Part I explored the nature of deep disagreement, while Part II considers its epistemological significance. It focuses on two core problems: the incommensurability and the rational resolvability problems. We critically survey key responses to these challenges, before raising worries for a variety of responses to them, including skeptical, relativist, and absolutist responses to the incommensurability problem, and to certain steadfast and conciliatory responses to the rational resolvability problem. We then pivot (...) to the ethical and political dimensions of deep disagreement. We focus on whether an unwillingness to engage with positions one considers to be immoral or repugnant might be good, and conclude with some reflections on the moral risks of engagement. (shrink)

How should one react when one has a belief, but knows that other people—who have roughly the same evidence as one has, and seem roughly as likely to react to it correctly—disagree? This paper argues that the disagreement of other competent inquirers often requires one to be much less confident in one’s opinions than one would otherwise be.

This article is about the implications of a conciliatory view about the epistemology of peer disagreement for our moral beliefs. Many have endorsed a conciliatory view about the epistemology of peer disagreement according to which if we find ourselves in a disagreement about some matter with another whom we should judge to be our epistemic peer on that matter, we must revise our judgment about that matter. This article focuses on three issues about the implications (...) of conciliationism for our moral beliefs. The first is whether there is an asymmetry between the implications of conciliationism for the epistemic status of our moral beliefs and the implications of conciliationism for the epistemic status of our non-moral beliefs; for instance, some have argued that conciliationism leads to epistemological moral skepticism but not to epistemological nonmoral skepticism. The second is what the implications of conciliationism are for the epistemic status of particular moral beliefs. The third is whether conciliationism's impact on the epistemic status of our moral beliefs has practical implications. (shrink)

How much should your confidence in your beliefs be shaken when you learn that others – perhaps 'epistemic peers' who seem as well-qualified as you are – hold beliefs contrary to yours? This article describes motivations that push different philosophers towards opposite answers to this question. It identifies a key theoretical principle that divides current writers on the epistemology of disagreement. It then examines arguments bearing on that principle, and on the wider issue. It ends by describing some (...) outstanding questions that thinking about this issue raises. (shrink)

Disagreement is a ubiquitous feature of human life, and philosophers have dutifully attended to it. One important question related to disagreement is epistemological: How does a rational person change her beliefs (if at all) in light of disagreement from others? The typical methodology for answering this question is to endorse a steadfast or conciliatory disagreement norm (and not both) on a priori grounds and selected intuitive cases. In this paper, I argue that this methodology is misguided. (...) Instead, a thoroughgoingly Bayesian strategy is what's needed. Such a strategy provides conciliatory norms in appropriate cases and steadfast norms in appropriate cases. I argue, further, that the few extant efforts to address disagreement in the Bayesian spirit are laudable but uncompelling. A modelling, rather than a functional, approach gets us the right norms and is highly general, allowing the epistemologist to deal with (1) multiple epistemic interlocutors, (2) epistemic superiors and inferiors (i.e. not just epistemic peers), and (3) dependence between interlocutors. (shrink)

This paper explores the application of hinge epistemology to deep disagreement. Hinge epistemology holds that there is a class of commitments—hinge commitments—which play a fundamental role in the structure of belief and rational evaluation: they are the most basic general ‘presuppositions’ of our world views which make it possible for us to evaluate certain beliefs or doubts as rational. Deep disagreements seem to crucially involve disagreements over such fundamental commitments. In this paper, I consider pessimism about deep (...) disagreement, the thesis that such disagreements are rationally irresolvable, and ask whether the Wittgensteinian account of deep disagreement—according to which such disagreements are disagreements over hinge commitments—provides adequate support for pessimism. I argue that the answer to this question depends on what hinge commitments are and what our epistemic relation to them is supposed to be. I argue for two core claims. First, that non-epistemic theories of hinge commitments provide adequate support for pessimism. Nevertheless, such theories have highly implausible consequences in the context of deep disagreement. Secondly, at least one epistemic theory of hinge commitments, the entitlement theory, permits optimism about such disagreements. As such, while hinge epistemology is mainly pessimistic about deep disagreement, it doesn’t have to be. (shrink)

This is a collective study of the epistemic significance of disagreement: twelve contributors explore rival responses to the problems that it raises for philosophy. They develop our understanding of epistemic phenomena that are central to any thoughtful engagement with others' beliefs.

In this paper, I will discuss the relevance of epistemology of disagreement to political disagreement. The two major positions in the epistemology of disagreement literature are the steadfast and the conciliationist approaches: while the conciliationist says that disagreement with one’s epistemic equals should compel one to epistemically “split the difference” with those peers, the steadfast approach claims that one can maintain one’s antecedent position even in the face of such peer disagreement. Martin Ebeling (...) applies a conciliationist approach to democratic deliberations, arguing that deliberative participants ought to pursue full epistemic conciliation when disagreeing with their peers on political questions. I argue that this epistemic “splitting the difference” could make participants vulnerable to certain cognitive biases. We might avoid these biases by paying more attention to the deliberative environment in which disagreement takes place. (shrink)

In recent years, one of the important issues discussed in epistemology is the problem of disagreement. The epistemology of disagreement is mostly discussed through peer disagreement. The question of whether two epistemic peers should make a change in their beliefs after awareness of the disagreement is important in these discussions. To this question; there are four main answers: conciliationism, steadfastness, total evidence view, and justificationist view. In this thesis, I found these answers insufficient and (...) put forward a new argument, which i named as 'the evidence- based argument in peer disagreement'. Religious disagreements, with some of its cases that fall within the scope of peer disagreement, cause religious diversity. Whether religious diversity itself and religious disagreements will detract from the epistemological status of our religious belief is another matter of debate for religious epistemology. I have demonstrated that our religious belief is rational despite religious diversity and religious disagreements, both by using my argument and by putting forward various epistemological reasons. (shrink)

My conclusion will be that, more often than we might have thought, suspension of judgment is the epistemically proper attitude. It follows that in such cases we lack reasonable belief and so, at least on standard conceptions, knowledge. This is a kind of contingent real-world skepticism that has not received the attention it deserves. I hope that this paper will help to bring this issue to life.

This is an introduction to the volume The Epistemology of Group Disagreement (Routledge, forthcoming), (eds.) F. Broncano-Berrocal and J.A. Carter.

Virtue ethics and virtue epistemology shift the focus of evaluation from thin concepts to thick ones. Simon Blackburn has argued that a shift to thick ethical concepts dooms us to talking past one another. I contend that virtue epistemologists can answer Blackburn's objection, thus salvaging genuine disagreement about the epistemically thick. Section I introduces the standard cognitivist and non-cognitivist analyses of thick concepts. Section II argues that thick epistemic concepts are subject to combinatorial vagueness. I contend that virtue (...) epistemologists share vague concepts of intellectual virtue and open-mindedness. Section III addresses Allan Gibbard's worry that appealing to vagueness exacerbates the problem. I conclude that for genuine disagreement to occur, the parties must (1) share vague concepts; and (2) agree on the goals of their conceptual analyses. (shrink)

The opponent in either an ordinary or religious disagreement asserts you have made a mistake. To avoid mistakes we strive to have good justification for beliefs which holds us connected to them during difficult challenges, similar to how a good boat tether, pictured on this book's front cover, holds a valuable boat throughout the many stresses placed on it. The problem is that an equivalently informed and capable opponent shows a possible mistake as relevant, and this ought to reduce (...) confidence in the justification of the religious belief. The Epistemology of Religious Disagreement develops, by looking at foundational issues in the theory of knowledge, an understanding of justification specifically designed to describe exactly why this reduction happens. (shrink)

Article Summary. The epistemology of disagreement studies the epistemically relevant aspects of the interaction between parties who hold diverging opinions about a given subject matter. The central question that the epistemology of disagreement purports to answer is how the involved parties should resolve an instance of disagreement. Answers to this central question largely depend on the epistemic position of each party before disagreement occurs. Two parties are equally positioned from an epistemic standpoint—namely, they are (...) epistemic peers—to the extent that they have roughly equal access to the evidence and comparable intellectual resources. When one party is epistemically better positioned than the other—that is, when one is an epistemic superior—it is widely agreed that this party should retain their belief while the other party—the epistemic inferior—should revise their opinion in the direction of what the epistemic superior believes. Addressing the central question is a complex task when the disagreeing parties are epistemic peers. Three main answers can be distinguished. Conciliatory answers mandate that both parties revise—i.e. lower their confidence in—their beliefs upon the occurrence of peer disagreement. Steadfast answers allow both parties to retain their respective beliefs, thereby committing them to demote the epistemic position of the interlocutor. The third group of answers suggests that the solution to peer disagreement depends on whether either party is highly justified in holding their belief. If either party is highly justified, then it is rational that this party retains its view. If neither party is highly justified, both should revise. The epistemology of disagreement addresses further important questions such as: whether the occurrence of disagreement opens the doors to skepticism and/or relativism; what the consequences of epistemic disagreement on intellectual character are; what laypeople should do when experts disagree with each other; and whether disagreement among groups can be treated in the same way as disagreement among individuals. (shrink)

Short introduction to the epistemology of disagreement.

Deep disagreements concern our most basic and fundamental commitments. Such disagreements seem to be problematic because they appear to manifest epistemic incommensurability in our epistemic systems, and thereby lead to epistemic relativism. This problem is confronted via consideration of a Wittgensteinian hinge epistemology. On the face of it, this proposal exacerbates the problem of deep disagreements by granting that our most fundamental commitments are essentially arationally held. It is argued, however, that a hinge epistemology, properly understood, does not (...) licence epistemic incommensurability or epistemic relativism at all. On the contrary, such an epistemology in fact shows us how to rationally respond to deep disagreements. It is claimed that if we can resist these consequences even from the perspective of a hinge epistemology, then we should be very suspicious of the idea that deep disagreements in general are as epistemologically problematic as has been widely supposed. (shrink)

How much should your confidence in your beliefs be shaken when you learn that others – perhaps ‘epistemic peers’ who seem as well-qualified as you are – hold beliefs contrary to yours? This article describes motivations that push different philosophers towards opposite answers to this question. It identifies a key theoretical principle that divides current writers on the epistemology of disagreement. It then examines arguments bearing on that principle, and on the wider issue. It ends by describing some (...) outstanding questions that thinking about this issue raises. (shrink)

In this paper, I develop an epistemological argument for freedom from poverty, building on Gerald Gaus’ work on political and moral disagreement in New Diversity Theory (NDT). NDT argues that diversity and disagreement are fundamental to political and moral learning. In this paper, I address Gaus’ central arguments in NDT, and focus on what I argue to be the key epistemological distinction of his account—namely, the argument that the relevant diversity, which is conducive to political and moral learning (...) and should therefore be protected by an institutional order, should not be defended or defined by reference to its performance with regards to discovery of true beliefs, but by reference to the independent epistemic value of protection of disagreeing, redundant and distant investigators. I develop a restatement of this argument from the perspective of institutional epistemology, and show that (along with constitutional liberties, polycentric self-governance and markets) freedom from poverty must be considered an institutional “device” conducive to such a conception of diversity. While Gaus rejects redistributive policies at the level of an institutional order, it is precisely his account of the epistemic powers of diversity and disagreement which provides the strongest defense of minimal redistribution. (shrink)

Disagreement is common: even informed, intelligent, and generally reasonable people often come to different conclusions when confronted with what seems to be the same evidence. Can the competing conclusions be reasonable? If not, what can we reasonably think about the situation? This volume examines the epistemology of disagreement. Philosophical questions about disagreement arise in various areas, notably politics, ethics, aesthetics, and the philosophy of religion: but this will be the first book focusing on the general epistemic (...) issues arising from informed disagreement. Ten leading philosophers offer specially written essays which together will offer a starting-point for future work on this topic. (shrink)

The present volume collects papers that were presented at the 34th International Wittgenstein Symposium “Epistemology: Contexts, Values, Disagreement” 2011 in Kirchberg. Contributors include: P. Baumann, A. Beckermann, E. Brendel, J. Bromand, G. Brun, M. David, W. Davis, C. Elgin, E. Fischer, W. Freitag, S. Goldberg, J. Greco, E. Harcourt, A. Kemmerling, M. Kober, D. Koppelberg, A. Koritensky, H. Kornblith, M. Kusch, M. Lee, N. Miscevic, K. Munn, B. Niederbacher, E. J. Olsson, C. Piller, R. Raaatzsch, S. Schmoranzer, S. (...) Schroeder, G. Schurz, N. Shackel, M. Solomon, M. Willaschek. (shrink)

In disagreements about trivial matters, it often seems appropriate for disputing parties to adopt a ‘middle ground’ view about the disputed matter. But in disputes about more substantial controversies (e.g. in ethics, religion, or politics) this sort of doxastic conduct can seem viciously acquiescent. How should we distinguish between the two kinds of cases, and thereby account for our divergent intuitions about how we ought to respond to them? One possibility is to say that ceding ground in a trivial dispute (...) is appropriate because the disputing parties are usually epistemic peers within the relevant domain, whereas in a more substantial disagreement the disputing parties rarely, if ever, qualify as epistemic peers, and so ‘sticking to one’s guns’ is usually the appropriate doxastic response. My aim in this paper is to explain why this way of drawing the desired distinction is ultimately problematic, even if it seems promising at first blush. (shrink)

This volume collects papers that were presented at the 34th International Ludwig Wittgenstein Symposium 2011 in Kirchberg am Wechsel, Austria. They focus on five key debates in contemporary epistemology: Does the term "to know" vary its meaning according to features of the contexts in which it is uttered? What role may "epistemic virtues" play in our cognitive activities? What is the surplus value of having knowledge instead of mere true belief? What is the structure and significance of testimonial knowledge (...) and belief? And when is disagreement rational, especially if it occurs among "epistemic peers"? In addition, a section is devoted to novel discussions of the work of Wittgenstein. Papers by A. Beckermann, E. Brendel, W. Davis, C. Elgin, S. Goldberg, J. Greco, A. Kemmerling, H. Kornblith, M. Solomon, M. Williams, and many others. (shrink)

This paper assesses the comparative reliability of two belief-revision rules relevant to the epistemology of disagreement, the Equal Weight and Stay the Course rules. I use two measures of reliability for probabilistic belief-revision rules, calibration and Brier Scoring, to give a precise account of epistemic peerhood and epistemic reliability. On the calibration measure of reliability, epistemic peerhood is easy to come by, and employing the Equal Weight rule generally renders you less reliable than Staying the Course. On the (...) Brier-Score measure of reliability, epistemic peerhood is much more difficult to come by, but employing the Equal Weight rule always renders you more reliable than Staying the Course. I conclude with some normative lessons we can draw from these formal results. (shrink)

Our introduction to the special topics forum provides a brief explanation of terms central to the general epistemology of disagreement literature that has developed over the past fifteen years. We then provide an overview of each contributor’s paper with an eye toward how each one relates to and extends the discussion about the epistemology of disagreement. Papers are arranged in an effort to draw readers into the discussion as follows: applying different general theories about disagreement (...) to religious disagreement in particular, analyzing core principles related to disagreement, and then on to specific everyday issues related to navigating religious disagreements such as conversion and tolerance. Of special interest is the possibility of prospects for reasonable religious disagreement or lack thereof. (shrink)

When people disagree about what is moral, we face an epistemological challenge—when the answer to a moral question is not obvious, how do we determine who is right? What if, under the circumstances, we do not have the means to show one party or the other is right? In recent years, a number of epistemologists have turned their attention to the general epistemic problem of how to respond reasonably to disagreement, and we can look to their work for guidance. (...) While there remains significant disagreement about how to respond to disagreement, I will focus on what I take to be the best position in the debate, known as the “Conciliatory” position (or “Conciliation” for short), which holds that parties to a disagreement should become less confident of their initial opinions to some degree, according to the credibility of the parties involved. Conciliation, if interpreted straightforwardly, has some counter-intuitive implications for unpopular opinions, including unpopular moral judgments. If a moral non-conformist becomes somewhat less confident of her view in response to each disagreement with a presumed epistemic peer, she will eventually have such a low degree of confidence in her initial view that she will effectively have switched positions. This result is troubling because almost everyone accepts moral views that were non-conforming views at some point in time, and these views probably would not have become widespread if non-conformists had changed their positions. I propose a modified version of Conciliation which would enable moral non-conformists to engage in cautious “experiments in living.” This modified view, I argue, is reasonable for those who are concerned, not only with correcting their own mistaken moral views, but with promoting moral progress in general. (shrink)

The epistemology of disagreement standardly divides conciliationist views from steadfast views. But both sorts of views are subject to counterexample—indeed, both sorts of views are subject to the same counterexample. After presenting this counterexample, I explore how the epistemology of disagreement should be reconceptualized in light of it.

It is widely accepted that one strong motivation for adopting a conciliatory stance with regard to the epistemology of peer disagreement is that the non-conciliatory alternatives are incompatible with the demands of intellectual character, and incompatible with the virtue of intellectual humility in particular. It is argued that this is a mistake, at least once we properly understand what intellectual humility involves. Given some of the inherent problems facing conciliatory proposals, it is maintained that non-conciliatory approaches to epistemic (...) peer disagreement are thus on much stronger dialectical ground than many suppose, including some defenders of this line. In particular, non-conciliatory proposals can resist the idea that epistemic peer disagreement directly weakens one’s epistemic justification, as conciliatory views maintain. This means that the epistemic justification that our beliefs in this regard enjoy, and thus our knowledge, is more secure than conciliatory approaches to epistemic peer disagreement would suggest. (shrink)

Abstract: Recent years have witnessed a revival of interest in relativism. Proponents have defended various accounts that seek to model the truth-conditions of certain propositions along the lines of standard possible world semantics. The central challenge for such views has been to explain what advantage they have over contextualist theories with regard to the possibility of disagreement. I will press this worry against Max Kölbel’s account of faultless disagreement. My case will proceed along two distinct but connected lines. (...) First, I will argue that the sense of faultlessness made possible by his relativism conflicts with our intuitive understanding of disagreement. And second, that his meta-epistemological commitments are at odds with the socio-epistemic function of disagreement. This latter problem for relativistic accounts of truth has thus far been largely ignored in the literature. (shrink)

In this article, I propose, defend, and apply a principle for applied ethics. According to this principle, we should exercise moral caution, at least when we can. More formally, the principle claims that if you should believe or suspend judgment that doing an action is a serious moral wrong, while knowing that not doing that action is not morally wrong, then you should not do that action. After motivating this principle, I argue that it has significant application in applied ethics. (...) The application to applied ethics comes by way of the epistemic significance of disagreement. Though such a principle has perhaps a number of applications in applied ethics, my focus here is limited to the question of whether it is morally permissible to eat animals for pleasure. (shrink)

Disagreement among experts is a central topic in social epistemology. What should an expert do when confronted with the different opinion of an epistemic peer? Possible answers include the steadfast view, the abstemious view, and moderate conciliatory views, which specify criteria for belief change when a peer’s different opinion is encountered. The practice of Delphi techniques in healthcare, medicine, and social sciences provides a real-life case study of expert disagreement, where disagreement is gradually transformed into consensus. (...) An analysis of Delphi shows that moderate conciliatory views are descriptively more adequate than rival views. However, it also casts doubt on whether the debate in social epistemology is explanatory relevant vis-à-vis real life cases of expert disagreement, where consensus replaces truth, and acceptance is more explanatorily relevant than belief. (shrink)

When you learn that a large body of highly intelligent, fair-minded, reasonable, and relatively unbiased thinkers disagree with you, does that give you good reason to think you’re wrong? Should you think, “Wait a minute. Maybe I’ve missed something here”? Should you at least drastically reduce your confidence? There is a general epistemological problem here regarding controversial beliefs, one that has nothing especially to do with religious belief. I argue that applying this discussion to religion transforms the problem in unexpected (...) and interesting ways, and that the religious believer is often epistemically reasonable in sticking with her controversial belief. (shrink)

The conciliationist and steadfast approaches have dominated the conversation in the epistemology of disagreement. In this paper, drawing on Jennifer Lackey’s justificationist approach and the casuistry paradigm in medical ethics, I will develop a more contextual epistemology of political disagreement. On this account, a given political disagreement’s scope, domain, genealogy, and consequence can be helpful for determining whether we should respond to that disagreement at the level of our confidence, beliefs, or with policy. Though (...) some may argue that responding with policy is a practical consideration instead of an epistemic matter, I argue that even policy responses to disagreements have an epistemic dimension to them that we should not ignore. (shrink)

The paper is a defense of the thesis that there are situations in which morally virtuous persons who are epistemic peers may disagree about what to do without either person being rationally required to change his or her judgment (a version of the Steadfast position in the epistemology of disagreement debate). The argument is based in part on similarities between decisions of virtuous agents and other practical decisions such as a baseball manager’s decision to change pitchers during a (...) game. In both cases, the role and responsibilities of the person making the decision and the complexities of the decision favor the Steadfast position. At the end of the paper, the argument for this position is compared with discussions of traditional arguments against moral objectivity that are based onmoral disagreements, and it is suggested that they involve rather different considerations. (shrink)

Upon discovering that certain beliefs we hold are contingent on arbitrary features of our background, we often feel uneasy. I defend the proposal that if such cases of contingency anxiety involve defeaters, this is because of the epistemic significance of disagreement. I note two hurdles to our accepting this Disagreement Hypothesis. Firstly, some cases of contingency anxiety apparently involve no disagreement. Secondly, the proposal may seem to make our awareness of the influence of arbitrary background factors irrelevant (...) in determining whether to revise our beliefs. I show that each of these problems can be successfully accommodated by the Disagreement Hypothesis. (shrink)

Consider two people who disagree about some important claim (e.g. the future moral and political consequences of current U.S. economic policy are X). They each believe the other person is in possession of relevant evidence, is roughly equally competent to evaluate that evidence, etc. From the epistemic point of view, how should such recognized disagreement affect their doxastic attitude toward the original claim? Recent research on the epistemology of disagreement has converged upon three general ways of answering (...) this question. The focus of this article is twofold: first, we summarize and give a brief evaluation of the main accounts of the epistemic significance of disagreement; then, we look at what these accounts suggest about how to epistemically assess both inter-religious and intra-religious disagreements. A final section offers recommendations for further research. (shrink)

Can known disagreement with our epistemic peers undermine or defeat the justification our beliefs enjoy? Much of the current literature argues for one of two extreme positions on this topic, either that the justification of each person's belief is (fully) defeated by the awareness of disagreement, or that no belief is defeated by this awareness. I steer a middle course and defend a principle describing when a disagreement yields a partial defeater, which results in a loss of (...) some, but not all, of the justification of a belief. I show that the 'no defeater' view is too strong. I also offer reasons for thinking that the 'full defeater' view is similarly mistaken. (shrink)

Disagreement among experts is a central topic in social epistemology. What should an expert do when confronted with the different opinion of an epistemic peer? Possible answers include the steadfast view (holding to one’s belief), the abstemious view (suspending one’s judgment), and moderate conciliatory views, which specify criteria for belief change when a peer’s different opinion is encountered. The practice of Delphi techniques in healthcare, medicine, and social sciences provides a real-life case study of expert disagreement, where (...) disagreement is gradually transformed into consensus. An analysis of Delphi shows that moderate conciliatory views are descriptively more adequate than rival views. However, it also casts doubt on whether the debate in social epistemology is explanatory relevant vis-à-vis real life cases of expert disagreement, where consensus replaces truth, and acceptance is more explanatorily relevant than belief. (shrink)

Upon discovering that certain beliefs we hold are contingent on arbitrary features of our background, we often feel uneasy. I defend the proposal that if such cases of contingency anxiety involve defeaters, this is because of the epistemic significance of disagreement. I note two hurdles to our accepting this Disagreement Hypothesis. Firstly, some cases of contingency anxiety apparently involve no disagreement. Secondly, the proposal may seem to make our awareness of the influence of arbitrary background factors irrelevant (...) in determining whether to revise our beliefs. I show that each of these problems can be successfully accommodated by the Disagreement Hypothesis. (shrink)

Martin Ebeling argues that a popular theory in the epistemology of disagreement--conciliationism--supports an egalitarian approach to politics. This view is mistaken for two reasons. First, even if political parties have the epistemic value that Ebeling claims, voters should not regard each other as epistemic peers--which conciliationism requires that they do. The American electorate is strikingly heterogeneous in both its knowledgeability and its rationality, and so the necessary epistemic parity relation does not hold. Second, for technical reasons, the beliefs (...) that a rational voter arrives at after conciliating with his peers do not, in general, accord with the results of egalitarian decision procedures. As its theory currently stands, the epistemology of disagreement does not support egalitarian politics. (shrink)

In this paper we investigate whether and to what extent scientists (e.g. inquirers such as epidemiologists or virologists) can have rational and fruitful disagreement with what we call post-enquirers (e.g. conspiratorial anti-vaxxers) on topics of scientific relevance such as the safety and efficacy of vaccines. In order to accomplish this aim, we will rely and expand on the epistemological framework developed in detail in Ferrari & Moruzzi (2021) to study the underlying normative profile of enquiry and post-enquiry. We take (...) it that our analysis provides an effective explanation of why standard argumentative strategies such as fact-checking and debunking cannot work in the context of disagreement between scientists and denialists unless they are coupled with a discussion of the values that are endorsed by the scientific community. (shrink)

We present a family of counter-examples to David Christensen's Independence Criterion, which is central to the epistemology of disagreement. Roughly, independence requires that, when you assess whether to revise your credence in P upon discovering that someone disagrees with you, you shouldn't rely on the reasoning that lead you to your initial credence in P. To do so would beg the question against your interlocutor. Our counter-examples involve questions where, in the course of your reasoning, you almost fall (...) for an easy-to-miss trick. We argue that you can use the step in your reasoning where you caught the trick as evidence that someone of your general competence level likely fell for it. Our cases show that it's permissible to use your reasoning about disputed matters to disregard an interlocutor's disagreement, so long as that reasoning is embedded in the right sort of explanation of why she finds the disputed conclusion plausible, even though it's false. (shrink)