The first book since Coady's 1992 'Testimony: A Philosophical Study' to offer a thorough survey and a philosophical introduction to testimony and its epistemological problems, while at the same time advancing a novel view that proposes independent justificatory pathways for the acceptance and rejection of testimony, respectively. // Table of Contents: // Introduction / 1. What is Testimony? / 2. The Testimonial Conundrum / 3. Testimony, Perception, Memory, and Inference / 4. Testimony and Evidence (...) / 5. Reductionism and Anti-Reductionism / 6. Hybrid Theories of Testimony / 7. Testimonial Knowledge: Transmission and Generation / 8. Trust and Assurance / 9. Expert Testimony / 10. Pathologies of Testimony / 11. Testimony and the Value of Knowledge / Glossary / Bibliography / Index. (shrink)

Testimony is an invaluable source of knowledge. We rely on the reports of those around us for everything from the ingredients in our food and medicine to the identity of our family members. Recent years have seen an explosion of interest in the epistemology of testimony. Despite the multitude of views offered, a single thesis is nearly universally accepted: testimonial knowledge is acquired through the process of transmission from speaker to hearer. In this book, Jennifer Lackey shows that (...) this thesis is false and, hence, that the literature on testimony has been shaped at its core by a view that is fundamentally misguided. She then defends a detailed alternative to this conception of testimony: whereas the views currently dominant focus on the epistemic status of what speakers believe, Lackey advances a theory that instead centers on what speakers say. The upshot is that, strictly speaking, we do not learn from one another's beliefs - we learn from one another's words. Once this shift in focus is in place, Lackey goes on to argue that, though positive reasons are necessary for testimonial knowledge, testimony itself is an irreducible epistemic source. This leads to the development of a theory that gives proper credence to testimony's epistemologically dual nature: both the speaker and the hearer must make a positive epistemic contribution to testimonial knowledge. The resulting view not only reveals that testimony has the capacity to generate knowledge, but it also gives appropriate weight to our nature as both socially indebted and individually rational creatures. The approach found in this book will, then, represent a radical departure from the views currently dominating the epistemology of testimony, and thus is intended to reshape our understanding of the deep and ubiquitous reliance we have on the testimony of those around us. (shrink)

The current debate over aesthetic testimony typically focuses on cases of doxastic repetition — where, when an agent, on receiving aesthetic testimony that p, acquires the belief that p without qualification. I suggest that we broaden the set of cases under consideration. I consider a number of cases of action from testimony, including reconsidering a disliked album based on testimony, and choosing an artistic educational institution from testimony. But this cannot simply be explained by supposing (...) that testimony is usable for action, but unusable for doxastic repetition. I consider a new asymmetry in the usability aesthetic testimony. Consider the following cases: we seem unwilling to accept somebody hanging a painting in their bedroom based merely on testimony, but entirely willing to accept hanging a painting in a museum based merely on testimony. The switch in intuitive acceptability seems to track, in some complicated way, the line between public life and private life. These new cases weigh against a number of standing theories of aesthetic testimony. I suggest that we look further afield, and that something like a sensibility theory, in the style of John McDowell and David Wiggins, will prove to be the best fit for our intuitions for the usability of aesthetic testimony. I propose the following explanation for the new asymmetry: we are willing to accept testimony about whether a work merits being found beautiful; but we are unwilling to accept testimony about whether something actually is beautiful. (shrink)

This is the Introduction and Chapter 1.1 of the book ‘Scientific Testimony. Its roles in science and society’ (OUP 2022). The introduction contains a brief survey of the book’s chapters and main conclusions, which I hope will be useful to the curious ones.

A natural view of testimony holds that a source's statements provide one with evidence about what the source believes, which in turn provides one with evidence about what is true. But some theorists have gone further and developed a broadly analogous view of memory. According to this view, which this essay calls the “diary model,” one's memory ordinarily serves as a means for one's present self to gain evidence about one's past judgments, and in turn about the truth. This (...) essay rejects the diary model's analogy between memory and testimony from one's former self, arguing first that memory and a diary differ with respect to their psychological roles, and second that this psychological difference underwrites important downstream epistemic differences. The resulting view stands opposed to prominent discussions of memory and testimony, which either, like the diary model, treat memory by analogy to what we naively wish to say about testimony, or which instead attempt to extend to testimony the epistemically preservative role of memory. (shrink)

We often rely on others for guidance about what to do. But wouldn't it be better to rely instead on only your own solo judgment? Deferring to others about moral matters, after all, can seem to conflict what Enlightenment demands. In Guided by Voices, however, Eric Wiland argues that there is nothing especially bad about relying on others in forming your moral views. You may rely on others for forming your moral views, just as you can your views about anything (...) else. You can accept moral testimony without loss. Furthermore, there are several distinctive social goods attainable by being guided by what others say. Thus, it can be better to be guided by moral testimony than by your own moral lights. Wiland also argues that relying on others for moral advice has one advantage over relying on others for moral testimony. For when you trust your adviser's advice, you both thereby form a joint agent that can achieve autonomy, moral understanding, and morally worthy action. Sometimes taking another's advice is your only way to act well. Arguing against the presumption that moral reasoning is ideally done alone, Guided by Voices is the first book to significantly address both moral testimony and advice. (shrink)

Testimony is a crucial source of knowledge: we are to a large extent reliant upon what others tell us. It has been the subject of much recent interest in epistemology, and this volume collects twelve original essays on the topic by some of the world's leading philosophers. It will be the starting point for future research in this fertile field. Contributors include Robert Audi, C. A. J. Coady, Elizabeth Fricker, Richard Fumerton, Sanford C. Goldberg, Peter Graham, Jennifer Lackey, Keith (...) Lehrer, Richard Moran, Frederick F. Schmitt, Ernest Sosa, and James Van Cleve. (shrink)

An epistemologist tells you that knowledge is more than justified true belief. You trust them and thus come to believe this on the basis of their testimony. Did you thereby come to know that this view is correct? Intuitively, there is something intellectually wrong with forming philosophical beliefs on the basis of testimony, and yet it's hard to see why philosophy should be significantly epistemically different from other areas of inquiry in a way that would fully prohibit belief (...) by testimony. This, I argue, is the puzzle of philosophical testimony. In this paper, I explore the puzzle of philosophical testimony and its ramifications. In particular, I examine the case for pessimism about philosophical testimony—the thesis that philosophical belief on the basis of testimony is impossible or is in some way illegitimate—and I argue that it lacks adequate support. I then consider whether the source of the apparent intellectual wrongness of testimonial‐based philosophical belief is grounded in non‐epistemic norms and goals of philosophical practice itself and argue that such norms are implausible, don't conflict with testimonial‐based philosophical belief, or else are mere disciplinary norms, lacking substantial normative force that would make it wrong to form testimonial‐based philosophical belief. (shrink)

In Relying on others [Goldberg, S. 2010a. Relying on others: An essay in epistemology. Oxford: Oxford University Press], I argued that, from the perspective of an interest in epistemic assessment, the testimonial belief-forming process should be regarded as interpersonally extended. At the same time, I explicitly rejected the extendedness model for beliefs formed through reliance on a mere mechanism, such as a clock. In this paper, I try to bolster my defense of this asymmetric treatment. I argue that a crucial (...) assumption lying behind the argument I used to establish interpersonal extendedness in testimony cases does not apply to beliefs formed through reliance on instruments. In this respect, at least, there appears to be something epistemically distinctive about relying on another epistemic agent. (shrink)

The contested testimony in the Hill-Thomas ease is an illuminating test case for universalistic theories about the reliability of testimony. There is no reasonable alternative to universalistic standards of epistemic appraisal. And yet the charge by feminists and others that such criteria can be applied selectively and used to discredit and silence people is shown to be accurate. The road to a solution is to offer guidelines for the interpretation and application of these norms.

In this paper, I explore what gives collective testimony its epistemic credentials, through a critical discussion of three competing accounts of the epistemology of collective testimony. According to the first view, collective testimony inherits its epistemic credentials from the beliefs the testimony expresses— where this can be seen either as the beliefs of all or some of the group’s members, or as the beliefs of group itself. The second view denies any necessary connection to belief, claiming (...) instead that the epistemic credentials of collective testimony derive from the reliability or truth-conduciveness of the statement that expresses the testimony. Finally, the third view claims that the epistemic credentials of collective testimony derive from the fact that it involves undertaking a collective commitment to trustworthiness, which makes the group susceptible to rebuke and blame if its testimony is not trustworthy. I argue that this last account holds the most promise for preserving what is distinctive about testimonial knowledge while still underwriting a robust epistemology of collective testimony. (shrink)

Drawing on both empirical evidence and evolutionary considerations, Sperber et al. argue that humans have a suite of evolved mechanisms for ‘epistemic vigilance’. On their view, vigilance plays a crucial role in ensuring the reliability and hence the evolutionary stability of communication. This article responds to their argument for vigilance, drawing on additional empirical evidence (from deception detection research) and evolutionary considerations (from animal signalling research) to defend a more optimistic, quasi-Reidian view of communication. On this alternative view, the lion’s (...) share of the responsibility for explaining the reliability of testimony falls not to the vigilance of receivers but rather to the honesty of communicators, implying that vigilance does not play a major role in explaining the evolutionary stability of communication. (shrink)

[The version of this paper published by Oxford online in 2019 was not copy-edited and has some sense-obscuring typos. I have posted a corrected (but not the final published) version on this site. The version published in print in 2020 has these corrections.] Which is more fundamental, assertion or testimony? Should we understand assertion as basic, treating testimony as what you get when you add an interpersonal addressee? Or should we understand testimony as basic, treating mere assertion (...) -- assertion without testimony -- as what you get when you subtract that interpersonal relation? In this chapter, I’ll argue for the subtractive approach and for the more general thesis that its treatment of the interpersonal element in assertion makes understanding that interpersonal element the key to understanding how assertion expresses belief. My theory of belief-expression in assertion treats it as internalizing the transmission of belief in testimony. How we understand that internalizing move depends on how we conceptualize the interpersonal element in testimony. Since what I’ll call the Command Model does not give us the conceptual resources to make this move, we should adopt an alternative that I’ll call the Custodial Model, on which a testifier aims not to convince her addressee but to reason with him – to give him reasons to believe what she tells him grounded in her trustworthiness in thus attempting to influence him. The subtractive approach to assertion thus rests on a key distinction between the aims of reasoning and persuasion. (shrink)

While possessing moral understanding is agreed to be a core epistemic and moral value, it remains a matter of dispute whether it can be acquired via testimony and whether it involves an ability to engage in moral reasoning. This paper addresses both issues with the aim of contributing to the current debates on moral understanding in moral epistemology and virtue ethics. It is argued that moral epistemologists should stop appealing to the argument from the transmissibility of moral understanding to (...) make a case for their favorite view of moral understanding. It is also argued that proponents of exemplarist moral theories cannot remain neutral on whether the ability to engage in moral reasoning is a necessary component of moral understanding. (shrink)

The thesis of this paper is that, if it is construed individualistically, epistemic justification does not capture the conditions that philosophers of science would impose on justified belief in a scientific hypothesis. The difficulty arises from beliefs acquired through testimony. From this I derive a lesson that epistemologists generally, and epistemologists of testimony in particular, should learn from philosophers of science: we ought to repudiate epistemic individualism and move towards a more fully social epistemology.

Given that testimony is a fundamental and fundamentally reliable source of information, having a status akin to perception and memory in our fabric of understanding, then questions arise about how to comprehend those categories of testimony that seem inherently misleading. Some of these are the ‘pathologies of testimony’ discussed in this chapter: gossip, rumour, and urban myth. It is argued that philosophers have paid insufficient attention to the phenomenology of these three and that what has been said (...) suffers from certain defects. The chapter explores both the conceptual structure of gossip, rumour, and urban myth, and the social and moral significance that they have. It concludes with comment on the epistemic value (and dis-value) of such pathologies. (shrink)

Philosophy now resembles, in many ways, a mature scientific discipline—with large division of cognitive labour. Big philosophical questions are broken down into ever-smaller research questions and addressed in growing thousands of publication units. But to what purpose? Philosophers are notoriously sceptical about deferring to each other’s published findings. Most publications seem to increase, rather than reduce, philosophical disagreement. There is a looming worry about absurdity in this activity. Great intellectual effort—and countless careers—are spent on things that seemingly do not settle (...) core questions of the field. I explore a somewhat more optimistic perspective. Rather than viewing progress as something made by the philosophical community writ large, I suggest we might instead locate progress in the small research communities that populate it. This new perspective allows us to do several things. Firstly, it allows us to reject extreme pessimism about deference to philosophical testimony. Secondly, it provides some rationale for the division of labour found in contemporary philosophy. And thirdly, it suggests that there may be a sense in which many big philosophical questions have already been answered. (shrink)

Immanuel Kant is often regarded as an exponent of the ‘individualist’ tradition in epistemology, according to which testimony is not a fundamental source of knowledge. The present paper argues that this view is far from accurate. Kant devotes ample space to discussions of testimony and, in his lectures on logic, arrives at a distinct and stable philosophical position regarding testimony. Important elements of this position consist in (a) acknowledging the ineliminability of testimony; (b) realizing that (...) class='Hi'>testimony can establish empirical knowledge with certainty; (c) establishing a presumptive principle regarding the acceptance of testimony; (d) arguing for a symmetry between knowledge based on experience and knowledge based on testimony. Rejecting testimony as a fundamental source of knowledge merely on the basis that no theoretically necessary ground for its truth can be given, would, as Kant puts it, indicate ‘a lack of moral interest’. Such ‘incredulity’ would be a form of ‘logical egoism’: it demonstrates an unwillingness or inability to think oneself in the place of others, yet this we must do if we are to trust our own judgements. While Kant strongly endorses testimony as a source of empirical knowledge, he does, however, make one important restriction: ‘Propositions of reason’ (Vernunftwahrheiten), such as universal moral principles, may not be adopted on the basis of testimony. I argue that this distinction, between testimonial knowledge of empirical matters of fact and individual knowledge of propositions of reason, is an important element of Kant’s epistemology of testimony, as it explains how his strong endorsement of testimony as a source of knowledge can be squared with his equally strong demand for intellectual autonomy. Finally, I comment on the overall implications of this account for Kant’s discussion, elsewhere in his work, of the public nature of communication. (shrink)

Standard philosophical explanations of the concept of knowledge invoke a personal goal of having true beliefs, and explain the other requirements for knowledge as indicating the best way to achieve that goal. In this highly original book, Steven L. Reynolds argues instead that the concept of knowledge functions to express a naturally developing kind of social control, a complex social norm, and that the main purpose of our practice of saying and thinking that people 'know' is to improve our system (...) for exchanging information, which is testimony. He makes illuminating comparisons of the knowledge norm of testimony with other complex social norms - such as those requiring proper clothing, respectful conversation, and the complementary virtues of tact and frankness - and shows how this account fits with our concept of knowledge as studied in recent analytic epistemology. His book will interest a range of readers in epistemology, psychology, and sociology. (shrink)

1. If you tell me that it’s raining outside, I would, presumably, be justified in acquiring the belief that it is raining on the basis of your say-so.1 But if you tell me that some war is unjust or...

Are we entitled or justified in taking the word of others at face value? An affirmative answer to this question is associated with the views of Thomas Reid. Recently, C. A. J. Coady has defended a Reidian view in his impressive and influential book. Testimony: A Philosophical Study. His central and most Oliginal argument for his positions involves reflection upon the practice of giving and accepting reports, of making assertions and relying on the word of others. His argument purports (...) to show that testimony is, by its very nature, a “reliable form of evidence about the way the world is.” The argument moves from what we do to why we are justified in doing it. Although I am sympathetic with both the Reidian view and Coady’s attempt to connect why we rely on others with why we are entitled to rely on others, I find Coady’s argument ineffective. (shrink)

Is testimony a legitimate source of aesthetic belief? Can I, for instance, learn that a film is excellent on your say-so? Optimists say yes, pessimists no. But pessimism comes in two forms. One claims that testimony is not a legitimate source of aesthetic belief because it cannot yield aesthetic knowledge. The other accepts that testimony can be a source of aesthetic knowledge, yet insists that some further norm prohibits us from exploiting that resource. I argue that this (...) second form of pessimism has certain advantages over the first. I offer two candidates for the non-epistemic norm that, on this view, stands in the way of our taking aesthetic testimony. And I argue that this form of pessimism meets a challenge to pessimism in general – that of explaining why, if testimony cannot be a legitimate source of aesthetic belief, we can nonetheless rightly rely on the aesthetic recommendations of others. (shrink)

A testimony is somebody else’s reported experience of what has happened. It is an indispensable source of knowledge. It only gives us historical cognition, however, which stands in a complex relation to rational or philosophical cognition: while the latter presupposes historical cognition as its matter, one needs the architectonic “eye of a philosopher” to select, interpret, and organize historical cognition. Kant develops this rationalist theory of testimony. He also practices it in his own work, especially while theorizing about (...) race as a subject of natural philosophy. In three dedicated essays on this subject, he treats race from the standpoint of a philosophical investigator of nature (Naturforscher), who (as Kant puts it in the first Critique) learns from nature “like an appointed judge who compels witnesses to answer the questions he puts to them.” This view underwrites Kant’s use of travel reports (a type of testimony) in developing and defending his theory of race. (shrink)

It is has been argued that there is a problem with moral testimony: testimony is deferential, and basing judgments and actions on deferentially acquired knowledge prevents them from having moral worth. What morality perhaps requires of us, then, is that we understand why a proposition is true, but this is something that cannot be acquired through testimony. I argue here that testimony can be both deferential as well as cooperative, and that one can acquire moral understanding (...) through cooperative testimony. The problem of moral testimony is thus not a problem with testimony generally, but a problem of deferential testimony specifically. (shrink)

I present an account of what it is to trust a speaker, and argue that the account can explain the common intuitions which structure the debate about the transmission view of testimony. According to the suggested account, to trust a speaker is to grant her epistemic authority on the asserted proposition, and hence to see her opinion as issuing a second order, preemptive reason for believing the proposition. The account explains the intuitive appeal of the basic principle associated with (...) the transmission view of testimony: the principle according to which, a listener can normally obtain testimonial knowledge that p by believing a speaker who testifies that p only if the speaker knows that p. It also explains a common response to counterexamples to this principle: that these counterexamples do not involve normal cases of testimonial knowledge. (shrink)

Knowledge-how often appears to be more difficult to transmit by testimony than knowledge-that and knowledge-wh. Some philosophers have argued that this difference provides us with an important objection to intellectualism—the view that knowledge-how is a species of knowledge-that. This article defends intellectualism against these testimony-based objections.

Contemporary discussions of the epistemology of testimony are often framed in terms of the disagreement on this topic between Hume and Reid. However, it is widely assumed that, prior to Hume, philosophers in the grip of Enlightenment individualism neglected philosophical questions about testimony, simply treating testimony as ordinary empirical evidence. In fact, although the evidential model of testimony was popular in early modern philosophy, it was also the subject of vigorous debate. This chapter examines Locke's defence (...) of the evidential model of testimony along with the opposing views of three early critics of Locke: G. W. Leibniz, Mary Astell, and Peter Browne. (shrink)

Children learn about the world from the testimony of other people, often coming to accept what they are told about a variety of unobservable and indeed counter-intuitive phenomena. However, research on children’s learning from testimony has paid limited attention to the foundations of that capacity. We ask whether those foundations can be observed in infancy. We review evidence from two areas of research: infants’ sensitivity to the emotional expressions of other people; and their capacity to understand the exchange (...) of information through non-verbal gestures and vocalization. We conclude that a grasp of the bi-directional exchange of information is present early in the second year. We discuss the implications for future research, especially across different cultural settings. (shrink)

Assurance theories of testimony attempt to explain what is distinctive about testimony as a form of epistemic warrant or justification. The most characteristic assurance theories hold that a distinctive subclass of assertion (acts of “telling”) involves a real commitment given by the speaker to the listener, somewhat like a promise to the effect that what is asserted is true. This chapter sympathetically explains what is attractive about such theories: instead of treating testimony as essentially similar to any (...) other kind of evidence, they instead make testimonial warrant depend on essential features of the speech act of testimony as a social practice. One such feature is “buck-passing,” the phenomenon that when I am challenged to defend a belief I acquired through testimony, I may respond by referring to the source of my testimony (and thereby “passing the buck”) rather than providing direct evidence for the truth of the content of the belief. The chapter concludes by posing a serious challenge to assurance theories, namely that the social practice of assurance insufficiently ensures the truth of beliefs formed on the basis of testimony, and thereby fails a crucial epistemological test as a legitimate source of beliefs. (shrink)

Among contemporary epistemologists of testimony, David Hume is standardly regarded as a ‘global reductionist’, where global reductionism requires the hearer to have sufficient first-hand knowledge of the facts in order to individually ascertain the reliability of the testimony in question. In the present paper, I argue that, by construing Hume’s reductionism in too individualistic a fashion, the received view of Hume on testimony is inaccurate at best, and misleading at worst. Overall, Hume is much more willing to (...) regard testimonial acceptance as a natural response to testimony than has traditionally been thought. In particular, Hume believes that indirect evidence of human nature and of the social world around us, can take the place of first-hand evidence of the track record of individual speakers or specific classes of testimony. In developing this interpretation of Hume’s views on testimony, the present paper draws on discussions found in the Treatise, the Enquiry, and in Hume’s writings on historical knowledge. In der zeitgenössischen Debatte um den erkenntnistheoretischen Status zeugnisbasiertenWissens wird gern auf David Hume als den Urheber eines „globalen Reduktionismus“ verwiesen, demzufolge der Zeugnisempfänger über ausreichend empirische Belege für die Verlässlichkeit des betreffenden Zeugnisses verfügen muss. Im vorliegenden Aufsatz soll gezeigt werden, dass die in der Literatur vorherrschende Meinung ein übertrieben „individualistisches“ Bild von Humes Reduktionismus zeichnet; dadurch wird Humes Position in der gegenwärtigen Debatte ungenau und bisweilen irreführend wiedergegeben. Bei genauerer Betrachtung erweist sich Hume als ausgesprochen aufgeschlossen gegenüber dem Akzeptieren fremden Zeugnisses und sieht darin eine Art Grundmuster im testimonialen Umgang mit anderen. Insbesondere konzediert Hume, dass indirekt erworbenes Wissen um die menschliche Natur und die soziale Welt an die Stelle direkter Belege für die Verlässlichkeit einzelner Zeugen treten kann. Die im vorliegenden Aufsatz entwickelte Neuinterpretation stützt sich auf den Treatise, den Enquiry und auf Humes Schriften zum Problem der historischen Erkenntnis. (shrink)

Philosophical work on testimony has flourished in recent years. Testimony roughly involves a source affirming or stating something in an attempt to transfer information to one or more persons. It is often said that the topic of testimony has been neglected throughout most of the history of philosophy, aside from contributions by David Hume (1711–1776) and Thomas Reid (1710–1796).1 True as this may be, Hume and Reid aren’t the only ones who deserve a tip of the hat (...) for recognizing the importance of testimony: St. Augustine of Hippo (354–430) affirms the place of testimony in human cognition, at least in his later writings. (shrink)

In this paper I focus on John Locke as a representative figure of English Enlightenment theorizing about the legitimacy of cognitive authority and examine the way in which a greater attention to the cultural milieu in which Locke worked can lead to a profound reexamination of his writings on cognitive authority. In particular, I suggest that an inattention to the rise of a culture of reading and the growing availability of books in Early Modern England has led historians of philosophy (...) largely to misrepresent Locke's theory of testimonial justification. At the core of my paper are two interrelated claims. First, with respect to the history of ideas, I argue that the Locke's interest in testimony as a source of justification was in fact greater than that of his Scholastic forebears, and that this fact has a simple, if as yet unacknowledged, cultural cause -- viz., the rise of the book as a mass commodity in the late 17th century. Second, with respect to the history of philosophy more particularly, I argue that this failure to acknowledge the cultural movements that led to a consideration of testimony as a topic of interest to epistemologists in the Modern era has led to a misreading of Locke's work on the subject. Indeed, Locke, though usually read as having attempted to denigrate testimony as a legitimate source of justification, in fact sought to devise an epistemology that would do justice to the centrality of testimony in the intellectual lives of growing numbers of his contemporaries in 17th and 18th century England and Scotland. (shrink)

Several authors have discussed and defended what is sometimes called the Asymmetry Thesis in social epistemology: that while reliance on testimony is essentially incontrovertible in epistemology, it is uniquely problematic for moral knowledge. This conclusion results, I argue, from considering the wrong sort of moral testimony: namely, ‘third-personal’ rather than ‘first-personal’ testimony. First-personal moral testimony is an inescapable part of the constitution of legitimate moral norms, and its role cannot be deflated as a form of mere (...) information to be taken up in private deliberation. The consequences of this argument for forms of hypothetical contractualism, in particular, are profound. (shrink)

Speakers convey messages in a variety of ways, including assertion, presupposition, and conversational implicature. Assertion is the paradigm vehicle for acts of testifying. The speaker gives her word to her audience that the presented content is true, allowing them to gain knowledge via a distinctive mechanism: believing on the speaker’s say-so. This is made possible by the conventions and norms that govern the social practice of making assertions, encapsulated in assertion’s being governed by the norm that one must: assert that (...) _P_ only if one knows that _P_. Do other means of conveying a message also amount to testifying to it? I first examine presupposition, which can be used as a sneaky way to inculcate belief in an audience without it being subject to attention and scrutiny. I then turn to conversational implicature, which I show is an epistemically fragile means of conveying a message, and as such is not apt to be, and is not, governed by a social norm, as the robust communicative means assertion is. We see that only explicit assertion of a conveyed message amounts to testifying to it. (shrink)

In this paper I argue that in Western contemporary societies testimony is structured by norms of reciprocation and thus is best understood as involving the exchange of gifts rather than, as philosophers and game theorists have tended to presume, market transactions. My argument is based on an initial analysis of the reactive attitudes that are exhibited in testimonial exchanges. I highlight the central role played by the reciprocating attitudes of gratitude and gratification respectively in the recipient and the donor (...) of testimony. This analysis leads to an account of the speech act of telling that is the primary vehicle of testimony. Telling, I argue, is a commissive but it is not, as it is usually presumed, akin to promising. Instead, its nature is that of an offer of a gift. Finally, I develop an account of the norms of trust and trustfulness as reciprocating social norms. I show that adopting these norms provides a particularly effective solution of the problem of cooperation. The solution is particularly effective because it incentivises both the sharing of epistemic goods and the acquisition of further such goods so that one is able to share them. (shrink)

This chapter contends that faith should be seen as a simple instance of testimonial acceptance, such that faith does not raise distinctive epistemological issues of ‘form,’ contrary to many writers. The chapter argues that an internalist, evidentialist, and foundationalist epistemology—commonly a target of criticism for recent defenders of the rationality of religious belief—is in fact hospitable to the reasonableness of the faith even of ordinary religious believers not well equipped with sophisticated arguments. Since, it argues, testimonial trust comfortably fits within (...) such a broad epistemology, the believer may reasonably take the ‘inner’ testimony of God to provide evidence more powerful than skeptical arguments for which she has no direct answer. (shrink)

An epistemologist tells you that knowledge is more than justified true belief. You trust them and thus come to believe this on the basis of their testimony. Did you thereby come to know that this view is correct? Intuitively, there is something intellectually wrong with forming philosophical beliefs on the basis of testimony, and yet it's hard to see why philosophy should be significantly epistemically different from other areas of inquiry in a way that would fully prohibit belief (...) by testimony. This, I argue, is the puzzle of philosophical testimony. In this paper, I explore the puzzle of philosophical testimony and its ramifications. In particular, I examine the case for pessimism about philosophical testimony—the thesis that philosophical belief on the basis of testimony is impossible or is in some way illegitimate—and I argue that it lacks adequate support. I then consider whether the source of the apparent intellectual wrongness of testimonial‐based philosophical belief is grounded in non‐epistemic norms and goals of philosophical practice itself and argue that such norms are implausible, don't conflict with testimonial‐based philosophical belief, or else are mere disciplinary norms, lacking substantial normative force that would make it wrong to form testimonial‐based philosophical belief. (shrink)

In this paper we address the question of how it can be possible for a non-expert to acquire justified true belief from expert testimony. We discuss reductionism and epistemic trust as theoretical approaches to answer this question and present a novel solution that avoids major problems of both theoretical options: Performative Expert Testimony (PET). PET draws on a functional account of expertise insofar as it takes the expert’s visibility as a good informant capable to satisfy informational needs as (...) equally important as her specific skills and knowledge. We explain how PET generates justification for testimonial belief, which is at once assessable for non-experts and maintains the division of epistemic labor between them and the experts. Thereafter we defend PET against two objections. First, we point out that the non-expert’s interest in acquiring widely assertable true beliefs and the expert’s interest in maintaining her status as a good informant counterbalances the relativist account of justification at work in PET. Second, we show that with regard to the interests at work in testimonial exchanges between experts and non-experts, PET yields a better explanation of knowledge-acquisition from expert testimony than externalist accounts of justification such as reliabilism. As our arguments ground in a conception of knowledge, which conceives of belief-justification as a declarative speech act, throughout the rearmost sections of this paper we also indicate to how such a conception is operationalized in PET. (shrink)

There is good reason to regard John Locke’s treatment of testimony as perhaps the most important of the early modern period. It is sophisticated, well developed, pioneering, and seems to ha...

Scientific Testimony concerns the roles of scientific testimony in science and society. The book develops a positive alternative to a tradition famously expressed by the slogan of the Royal Society Nullius in verba ("Take nobody's word for it"). This book argues that intra-scientific testimony—i.e., testimony between collaborating scientists—is not in conflict with the spirit of science or an add-on to scientific practice. On the contrary, intra-scientific testimony is a vital part of science. This is illustrated (...) by articulating epistemic norms of intra-scientific testimony and arguing that they are vital to scientific methodology on a par with other scientific norms governing scientific observation and data analysis. -/- The book also provides an account of public scientific testimony—i.e., scientific testimony to the lay population. This is done by integrating philosophical resources with empirical research on the science of science communication. For example, various misconceptions about science and folk epistemological biases are diagnosed as factors that contribute to science skepticism. This diagnosis provides the basis for developing novel norms for science communication that are sensitive to the psychological and social obstacles to laypersons' uptake of it. Finally, the volume discusses how public scientific testimony is best embedded in society and argues that it is critical for societies that pursue the ideals of deliberative democracy. Scientific Testimony draws on philosophy of science, social epistemology, and empirical research to provide a wide-ranging account of the roles of scientific testimony within scientific practice and within the wider society. (shrink)

Mathematicians appear to have quite high standards for when they will rely on testimony. Many mathematicians require that a number of experts testify that they have checked the proof of a result p before they will rely on p in their own proofs without checking the proof of p. We examine why this is. We argue that for each expert who testifies that she has checked the proof of p and found no errors, the likelihood that the proof contains (...) no substantial errors increases because different experts will validate the proof in different ways depending on their background knowledge and individual preferences. If this is correct, there is much to be gained for a mathematician from requiring that a number of experts have checked the proof of p before she will rely on p in her own proofs without checking the proof of p. In this way a mathematician can protect her own work and the work of others from errors. Our argument thus provides an explanation for mathematicians’ attitude towards relying on testimony. (shrink)

According to “sensitive invariantism,” the word “know” expresses the same relation in every context of use, but what it takes to stand in this relation to a proposition can vary with the subject’s circumstances. Sensitive invariantism looks like an attractive reconciliation of invariantism and contextualism. However, it is incompatible with a widely-held view about the way knowledge is transmitted through testimony. If both views were true, someone whose evidence for p fell short of what was required for knowledge in (...) her circumstances could come to know that p simply by feeding her evidence to someone in less demanding circumstances and then accepting his testimony. (shrink)

ABSTRACT Testimony from victims of gendered violence is often wrongly disbelieved. This paper explores a way to address this problem by developing a phenomenological approach to testimony. Guided by the concept of ‘disclosedness’, a tripartite analysis of testimony as an affective, embodied, communicative act is developed. Affect indicates how scepticism may arise through the social moods that often attune agents to victims’ testimony. The embodiment of meaning suggests testimony should not be approached as an assertion, (...) but as a process of ‘articulating an understanding’. This account is deepened in the discussion of testimony as a communicative act. It is argued that testimony must be considered as a relational whole, and thus our aim in receiving victims’ testimony should be to honour the relational conditions under which the truth of testimony can be heard. Approaching testimony as the collaborative process of enabling an understanding to be articulated can enhance our conception of gendered violence, whilst also better serving the victims of gendered violence by helping to overcome the lack of trust and excessive scepticism with which victims’ testimony is often met. (shrink)

In Testimony, Trust, and Authority, Benjamin McMyler argues that philosophers have failed to appreciate the nature and significance of our epistemic dependence ...

Testimony is a vital and ubiquitous source of knowledge. Were we to refrain from accepting the testimony of others, our lives would be impoverished in startling and debilitating ways. Despite the vital role that testimony occupies in our epistemic lives, traditional epistemological theories have focused primarily on other sources, such as sense perception, memory, and reason, with relatively little attention devoted specifically to testimony. In recent years, however, the epistemic significance of testimony has been more (...) fully appreciated. I shall here focus on two questions that have received the most attention in recent work in the epistemology of testimony. First, is testimonial knowledge acquired only by being transmitted from speaker to hearer? Second, must a hearer have positive reasons to justifiedly accept a speaker's testimony? (shrink)

A proof is offered that aims to show that there can be no knowledge of God, excluding knowledge based on natural theology, without divine self-testimony. Both special and general revelation, if they occur, would be forms of divine self-testimony. It is argued that this indicates that the best way to model such knowledge of God is on the basis of an analogy with knowledge gained through testimony, rather than perceptual models of knowledge, such as the prominent model (...) defended by Plantinga. Appropriate causal chains and reliable cognitive processes only seem at best to ensure that a belief proposed for acceptance is the belief the testifier wants accepted; they do not ensure that it is rational to accept the belief. This particularly applies where there is much at stake, where it seems rational to seek some form of evidence, if available. Some brief comments are made on Trinitarian self-testimony. Another model of the ‘inner witness’ is briefly sketched out, based on the analogy with conscience. This model may capture some of the features of Plantinga’s approach, but leaves room for a free rejection of divine self-testimony, in a way that the perceptual analogy does not. A point connected to Plantinga’s aims is then made about the link between evidence, value and divine self-testimony, in relation to religious experience. Finally, it is suggested that the earlier proof may apply in a particular sense to all knowledge of God, including that based on natural theology. (shrink)

This chapter contrasts the way in which classical internalists and paradigm externalists might approach the question of how to construe the justification (if there is any) provided by testimony. In particular, it focuses on the question of whether testimonial inference has a fundamental or a derivative place in our reasoning. In the course of answering this question, this alleged distinction between fundamental and derivative principles of reasoning is examined more closely.

Many contributors of the debate about knowledge by testimony concentrate on the problem of justification. In my paper I will stress a different point – the concept of testimony itself. As a starting point I will use the definitional proposal of Jennifer Lackey. She holds that the concept of testimony should be regarded as entailing two aspects – one corresponding to the speaker, the other one to the hearer. I will adopt the assumption that we need to (...) deal with both aspects. Nevertheless, I will show that her concept – which suggests regarding testimony as an act of communication conveying information – is too broad and, therefore, I will end up with a different twofold definition. (shrink)