In my () I argued that a central component of mathematical practice is that published proofs must be “transferable” — that is, they must be such that the author's reasons for believing the conclusion are shared directly with the reader, rather than requiring the reader to essentially rely on testimony. The goal of this paper is to explain this requirement of transferability in terms of a more general norm on defeat in mathematical reasoning that I will call “convertibility”. I begin (...) by discussing two types of epistemic defeat: “rebutting” and “undercutting”. I give examples of both of these kinds of defeat from the history of mathematics. I then argue that an important requirement in mathematics is that published proofs be detailed enough to allow the conversion of rebutting defeat into undercutting defeat. Finally, I show how this sort of convertibility explains the requirement of transferability, and contributes to the way mathematics develops by the pattern referred to by Lakatos () as “lemma incorporation”. (shrink)

The landscape of contemporary epistemology has significantly diversified in the past 30 years, shaped in large part by two complementary movements: virtue and social epistemology. This diversification provides an apt theoretical context for the epistemology of education. No longer concerned exclusively with the formal analysis of knowledge, epistemologists have turned their attention towards individuals as knowers, and the social contexts in which epistemic goods such as knowledge and understanding are acquired and exchanged. As such, the concerns of epistemology have once (...) again aligned with questions lying at the heart of the philosophy of education regarding the nature, aims and practice of education. Employing the conceptual tools and frameworks of the contemporary field, these questions are addressed by both epistemologists and education theorists in the emerging epistemology of education literature. (shrink)

Most explanations of the rational authority of testimony provide little guidance when evaluating individual pieces of testimony. In practice, however, we are remarkably sensitive to the varying epistemic credentials of testimony: extending trust when it is deserved, and withholding it when it is not. A complete account of the epistemology of testimony should, then, have something to say about when it is that testimony is trustworthy. In the typical case, to judge someone trustworthy requires judging them to be competent and (...) sincere. In this essay we develop an exchange-based account of testimony that shows how those who receive testimony are in a position to evaluate the sincerity of speakers. (shrink)

A view of knowledge—what I call the "Deserving Credit View of Knowledge" —found in much of the recent epistemological literature, particularly among so-called virtue epistemologists, centres around the thesis that knowledge is something for which a subject deserves credit. Indeed, this is said to be the central difference between those true beliefs that qualify as knowledge and those that are true merely by luck—the former, unlike the latter, are achievements of the subject and are thereby creditable to her. Moreover, it (...) is often further noted that deserving credit is what explains the additional value that knowledge has over merely lucky true belief. In this paper, I argue that the general conception of knowledge found in the DCVK is fundamentally incorrect. In particular, I show that deserving credit cannot be what distinguishes knowledge from merely lucky true belief since knowledge is not something for which a subject always deserves credit. (shrink)

Fricker has proposed that a hearer’s knowledge that p acquired through trusting a speaker requires the speaker to know that p, and that therefore testimonial knowledge through trust is necessarily second-hand knowledge. In this paper, I argue that Fricker’s view is problematic for four reasons: firstly, Fricker’s dismissal of a central challenge to the second-handedness of testimonial knowledge is based on a significant misrepresentation of this challenge; secondly, on closer scrutiny an important distinction Fricker wants to draw is compromised by (...) her account of trust; thirdly, Fricker’s conception of trust is at odds with our natural understanding of this notion; fourthly, the reasons Fricker cites in support of her view are not sufficient to single out her view as the correct one, since rival views can also accommodate the relevant data. (shrink)

Until recently, epistemology was largely caught in the grips of an epistemically unrealistic radical epistemological individualism on which the beliefs and testimony of others were of virtually no epistemic significance. Thankfully, epistemologists have bucked the individualist trend, acknowledging that one person's belief or testimony that P might offer another person prima facie epistemic reasons – or social evidence as I call it – to believe P. In this paper, I discuss the possibility and conditions under which beliefs and testimony act (...) as social evidence, in particular, beliefs and testimony regarding the existence of God. The epistemic egoist maintains that one must possess positive reasons in favor of other people's reliability or trustworthiness before their beliefs and testimony offer prima facie social evidence. The epistemic universalist, on the other hand, argues that the beliefs of all others are prima facie credible and should be treated accordingly. All this will set up subsequent discussion of the epistemic significance of common consent or widespread belief in God. I show how common consent arguments assume the epistemic universalist's account of the conditions under which the beliefs and testimony of others acquire reason-giving force as social evidence. (shrink)

It has recently been argued that public linguistic norms are implicated in the epistemology of testimony by way of underwriting the reliability of language comprehension. This paper argues that linguistic normativity, as such, makes no explanatory contribution to the epistemology of testimony, but instead emerges naturally out of a collective effort to maintain language as a reliable medium for the dissemination of knowledge. Consequently, the epistemologies of testimony and language comprehension are deeply intertwined from the start, and there is no (...) room for grounding the one in terms of the other. (shrink)

Contrary to current individualistic epistemology, Classical rhetoric provides us with a pragmatical and particularly dynamic conception of ‘testimony’ as a source made available for the orator by the particular community in which she acts. In order to count as usable testimony, a testimony to which one could appeal in further communications, any discourse must comply with specific rules of social sanction. A deliberate attention to the social practices in which testimony is given and assessed may offer us a more accurate (...) view of its epistemological role. (shrink)

Philosophers have long held that epistemic self-reliance has a special value. But, this view has recently been challenged by prominent epistemologist Linda Zagzebski. Zagzebski argues that potential sources of support for the claim that epistemic self-reliance has a special value fail. Here I provide a novel defense of the special value of epistemic self-reliance. Self-reliance has a special value because it is required for attaining certain valuable cognitive achievements. Further, practicing self-reliance may be all-things-considered worthwhile even when doing so is (...) a less reliable way of getting to the truth than relying on others and even when doing so is flatly unreliable in getting to the truth. (shrink)

This paper investigates the influence that social ties can have on behavior. After defining the concept of social ties that we consider, we introduce an original model of social ties. The impact of such ties on social preferences is studied in a coordination game with outside option. We provide a detailed game theoretical analysis of this game while considering various types of players, i.e., self-interest maximizing, inequity averse, and fair agents. In addition to these approaches that require strategic reasoning in (...) order to reach some equilibrium, we also present an alternative hypothesis that relies on the concept of team reasoning. After having discussed the differences between the latter and our model of social ties, we show how an experiment can be designed so as to discriminate among the models presented in the paper. (shrink)

What entitles you to rely on information received from others? What entitles you to rely on information retrieved from your own memory? Intuitively, you are entitled simply to trust yourself, while you should monitor others for signs of untrustworthiness. This article makes a case for inverting the intuitive view, arguing that metacognitive monitoring of oneself is fundamental to the reliability of memory, while monitoring of others does not play a significant role in ensuring the reliability of testimony.

This paper suggests a new way of analysing testimony. The starting point of the analysis is ‘epistemological communitarianism’. This is the view that communities, rather than individuals, are the primary bearers of knowledge. The new perspective is developed through a discussion of four issues: the scope of testimony; the role of inferences in the reception and evaluation of testimony; the possibility of a global justification of testimony; and the question of whether testimony is a generative source of knowledge or a (...) mere means of transmission of already existing knowledge. The last-mentioned issue is given special prominence. It is argued that testimony is a generative source of knowledge.Author Keywords: Testimony; Communitarianism; Epistemology; Trust; Sociology of knowledge. (shrink)

In this paper I use philosophical accounts on the relationship between trust and knowledge in science to apprehend this relationship on the Web. I argue that trust and knowledge are fundamentally entangled in our epistemic practices. Yet despite this fundamental entanglement, we do not trust blindly. Instead we make use of knowledge to rationally place or withdraw trust. We use knowledge about the sources of epistemic content as well as general background knowledge to assess epistemic claims. Hence, although we may (...) have a default to trust, we remain and should remain epistemically vigilant; we look out and need to look out for signs of insincerity and dishonesty in our attempts to know. A fundamental requirement for such vigilance is transparency: in order to critically assess epistemic agents, content and processes, we need to be able to access and address them. On the Web, this request for transparency becomes particularly pressing if (a) trust is placed in unknown human epistemic agents and (b) if it is placed in non-human agents, such as algorithms. I give examples of the entanglement between knowledge and trust on the Web and draw conclusions about the forms of transparency needed in such systems to support epistemically vigilant behaviour, which empowers users to become responsible and accountable knowers. (shrink)

This paper has two aims. The first is to criticize epistemological externalism in a way different from most other criticisms. Most criticisms claim externalism fails because it does not adequately explicate ordinary notions of knowledge and justification. Such criticisms are often unhelpful to the externalist because he may not even intend his theory to be such an explication. The criticism presented here avoids this difficulty. The other aim, achieved en route to this criticism, is to explode a dogma of contemporary (...) epistemology — that the primary end of epistemic endeavors is truth — and to bring to light the many other important goals there are for such endeavors in addition to truth. Several of these goals pertain to the power of knowledge in social contexts. The criticism ultimately made of externalism is that externalist knowledge is defective because it fails to achieve these extra-verific goals of epistemic endeavors. (shrink)

This paper states three counterexamples to the claim that testimony cannot generate knowledge, that a hearer can only acquire testimonial knowledge from a speaker who knows: a twins case, the fossil case, and an inversion case. The paper provides an explanation for why testimony can generate knowledge. Testimonial knowledge involves the flow of information from a speaker to a hearer through the linguistic channel.

The fact that much of our knowledge is gained through the testimony of others challenges a certain form of epistemic individualism. We are clearly not autonomous knowers. But the discussion surrounding testimony has maintained a commitment to what I have elsewhere called epistemic agent individualism. Both the reductionist and the anti-reductionist have focused their attention on the testimony of individuals. But groups, too, are sources of testimony - or so I shall argue. If groups can be testifiers, a natural question (...) to ask is whether our beliefs based on the testimony of groups are ever justified and whether such a justification is to be conferred inferentially or non-inferentially. I consider and dismiss the possibility of extending an anti-reductionist account of justification to our group testimonial beliefs. I also argue against a version of reductionism that would have our group testimonial beliefs justified only in so far as we were able to monitor the trustworthiness of members of the group. However, there are forms of reductionism that can be extended to make sense of the justification of our group testimonial beliefs. There are mechanisms for monitoring the trustworthiness and competency of a group (rather than its members) and, further, a variety of background beliefs allow us to assess the testimony of a group for reliability. (shrink)

Let us focus on what I take it is the paradigm case of testimony—the intentional transfer of a belief from one agent to another, whether in the usual way via a verbal assertion made by the one agent to the other, or by some other means, such as through a note.1 So, for example, John says to Mary that the house is on fire (or, if you like, ‘texts’ her this message on her phone), and Mary, upon hearing this, forms (...) the belief that the house is on fire and consequently exits the building at speed. Clearly, a great deal of our beliefs are gained via testimony, and if the epistemic status of our testimonybased beliefs were to be called into question en masse, then this would present us with quite a predicament. It is thus essential that we have some plausible account of the epistemology of testimony. Our primary focus will be on the justification for our testimony-based beliefs, though along the way we will say a little about other relevant epistemic notions like epistemic entitlement as well. (shrink)

Participants on both sides of the contemporary debate between reductionism and anti-reductionism about testimony commonly describe testimonial knowledge as knowledge acquired at second hand. I argue that fully appreciating the distinctive sense in which testimonial knowledge is secondhand supports anti-reductionism over reductionism but also that it supports a particular kind of anti-reductionism very different from that typically offered in the literature. Testimonial knowledge is secondhand in the demanding sense of being justified by the authority of a speaker where this requires (...) that epistemic responsibility for meeting challenges to the audience's testimonial knowledge is shared between speaker and audience. The epistemic credentials of testimonial knowledge are in this sense importantly interpersonal. (shrink)

Many epistemologists agree that even very young children sometimes acquire knowledge through testimony. In this paper I address two challenges facing this view. The first (building on a point made in Lackey (2005)) is the defeater challenge, which is to square the hypothesis that very young children acquire testimonial knowledge with the fact that children (whose cognitive immaturity prevents them from having or appreciating reasons) cannot be said to satisfy the No-Defeaters condition on knowledge. The second is the extension challenge, (...) which is to give a motivated, extensionally-adequate account of the conditions on testimonial knowledge in early childhood. Neither challenge can be met merely by endorsing externalism about knowledge; but we can meet both by reconceiving the process that eventuates in the child’s consumption of testimony. My central thesis is that this process should be seen as implicating features of the child's social environment. The result is a novel anti-individualistic externalism about knowledge. (shrink)

Within the contemporary epistemology of testimony, it is widely assumed that testimonial scepticism can be dismissed without engaging with possible reasons or arguments supporting the view. This assumption of dismissibility both underlies the debate between reductionist and non-reductionist views of testimony and is responsible for the neglect of testimonial scepticism within contemporary epistemology. This paper argues that even given liberal assumptions about what may constitute valid grounds for the dismissal of a sceptical view, the assumption that testimonial scepticism is dismissible (...) should be rejected. For even if familiar sceptical positions and scepticism about testimonial justification can be dismissed on such grounds, scepticism about testimonial knowledge cannot. (shrink)

It is often suggested that we are equipped with a set of cognitive tools that help us to filter out unreliable testimony. But are these tools effective? I answer this question in two steps. Firstly, I argue that they are not real-time effective. The process of filtering, which takes place simultaneously with or right after language comprehension, does not prevent a particular hearer on a particular occasion from forming beliefs based on false testimony. Secondly, I argue that they are long-term (...) effective. Some hearers sometimes detect false testimony, which increases speakers’ incentives for honesty and stabilizes the practice of human communication in which deception is risky and costly. In short, filtering prevents us from forming a large number of beliefs based on false testimony, not by turning each of us into a high-functioning polygraph but by turning the social environment of human communication into one in which such polygraphs are not required. Finally, I argue that these considerations support strong anti-reductionism about testimonial entitlement. (shrink)

A prima facie plausible and widely held view in epistemology is that the epistemic standards governing the acquisition of testimonial knowledge are stronger than the epistemic standards governing the acquisition of perceptual knowledge. Conservatives about testimony hold that we need prior justification to take speakers to be reliable but recognise that the corresponding claim about perception is practically a non-starter. The problem for conservatives is how to establish theoretically significant differences between testimony and perception that would support asymmetrical epistemic standards. (...) In this paper I defend theoretical symmetry of testimony and perception on the grounds that there are no good reasons for taking these two belief forming methods to have significant theoretical differences. I identify the four central arguments in defence of asymmetry and show that in each case either they fail to establish the difference that they purport to establish or they establish a difference that is not theoretically significant. (shrink)

De um modo geral, queríamos mostrar que a filosofia tem suas próprias áreas, mas tem também subáreas em interdisciplinaridade com as ciências. As ciências e as disciplinas acadêmicas em geral têm problemas, cuja a solução pode ser encontrada empiricamente, por meio de experimentos, entrevistas, documentos, ou formalmente, por meio de cálculos etc, porém os problemas das filosofias dessas disciplinas são justamente os problemas mais fundamentais dessas disciplinas, que fundam o quadro conceitual e de pesquisa das mesmas, e que só poderiam (...) ser respondidos por meio de uma extensa argumentação. A filosofia de cada uma dessas disciplinas é uma mistura (a) de metafísica da disciplina, perguntando-se qual a natureza e justificação das entidades que formam o quadro teórico da disciplina, i.e., quais delas realmente existem na realidade (não sendo meros instrumentos para obter resultados) e quais as suas categorizações fundamentais, naturezas e funções teóricas, (b) de epistemologia dessa disciplina, ao nos perguntarmos sobre como tal área poderia obter conhecimento de modo confiável e se ela de fato o faz, e (c) de teorias do valor, ao nos perguntarmos, por exemplo, sobre qual o valor moral do desenvolvimento de uma certa disciplina e, finalmente, (d) a lógica, que perpassa tudo, ao nos perguntarmos sobre a consistência das teses assumidas pela disciplina. Não é à toa que falamos que a filosofia é mãe de todas as ciências. Ela é mãe tanto num sentido geracional, pois a maioria das ciências foram desenvolvimentos particulares, empíricos ou de cálculo, das questões filosóficas sobre um certo tema, quanto num sentido fundamental, pois é a filosofia que fornece os fundamentos mais gerais, metafísicos, epistêmicos, valorativos e lógicos, na construção do quadro teórico de cada ciência e na qualidade dos métodos para se aproximar da verdade que a disciplina utiliza. A biologia, por exemplo, foi criada por Aristóteles, tal como os primeiros desenvolvimentos da meteorologia (na verdade, esta começa com os pré-socráticos), e grande parte do fundamento da física atual jaz nas discussões de filosofia da física. Sendo você filósofo ou cientista de outra área, a filosofia promete te dar as bases para uma reflexão geral ou sobre sua área, que seja muito mais informada e profunda do que aquilo que você poderia realizar sem ela. /// In general, we wanted to show that philosophy has its own areas, but it also has subareas in interdisciplinarity with the sciences. The sciences and academic disciplines in general have problems, the solution of which can be found empirically, through experiments, interviews, documents, or formally, through calculations etc., but the problems of the philosophies of these disciplines are precisely the most fundamental problems. of these disciplines, which build their conceptual and research framework, and which could only be answered through extensive argumentation. The philosophy of each of these disciplines is a mixture (a) of metaphysics of the discipline, asking what is the nature and justification of the entities that form the theoretical framework of the discipline, ie, which ones really exist in reality (not being mere instruments for achieving results) and what are its fundamental categorizations, natures and theoretical functions, (b) the epistemology of this discipline, when we ask ourselves how such an area could obtain knowledge reliably and if it does, and (c) theories of value, when we ask ourselves, for example, about the moral value of the development of a certain discipline and, finally, (d) the logic, which permeates everything, when we ask ourselves about the consistency of the theses assumed by the discipline. It is not for nothing that we say that philosophy is the mother of all sciences. It is a mother both in a generational sense, as most sciences were particular empirical or formal developments of philosophical questions on a certain topic, and in a fundamental sense, as it is philosophy that provides the most general, metaphysical, epistemic, evaluative and logical foundations, in the construction of the theoretical framework of each science and in the quality of the methods to approach the truth that the discipline uses. Biology, for example, was created by Aristotle, like the first developments in meteorology (in fact, it starts with the pre-Socratics), and much of the foundation of current physics lies in discussions of the philosophy of physics. Whether you are a philosopher or scientist from another area, philosophy promises to give you the basis for a general reflection or about your area, which is much more informed and profound than what you could accomplish without it. (shrink)

Elizabeth Fricker has recently proposed a principle aimed at stating the necessary and sufficient conditions for testimonial justification. Her proposal entails that a hearer is justified in believing a speaker’s testimony only if she recognizes the speaker to be trustworthy, which, given Fricker’s internalist commitments, requires the hearer to have within her epistemic purview grounds which justify belief in the speaker’s trustworthiness. We argue that, as it stands, Fricker’s principle is too demanding, and we propose some amendments to it. We (...) further discuss the viability of her internalist approach to testimony.Keywords: Testimony; Justification; Internalism; Social epistemology; Elizabeth Fricker. (shrink)

According to some, taking moral testimony is a potentially decent way to exercise one's moral agency. According to others, it amounts to a failure to live up to minimal standards of moral worth. What's the issue? Is it conceptual or empirical? Is it epistemological or moral? Is there a ‘puzzle’ of moral testimony; or are there many, or none? I argue that there is no distinctive puzzle of moral testimony. The question of its legitimacy is as much a moral or (...) political as an epistemological question. Its answer is as much a matter of contingent empirical fact as a matter of a priori necessity. In the background is a mixture of normative and descriptive issues, including the value of autonomy, the nature of legitimate authority, and who to trust. (shrink)

Hearsay or indirect testimony receives little discussion even today in epistemology, and yet it represents one of the cardinal modes for the transmission of knowledge and for human cognitive development. It suffices to think of school education whereby a student listens to teachers reporting knowledge acquired, often indirectly, from the most varied sources such as text books, newspapers, personal memory, television, etc… Or let us consider the importance of oral tradition in the social and cultural development of civilisations. Or even (...) let us call to mind the learning process of infants who, only thanks to the knowledge learned from others, succeed in learning the language. Finally, with the emerging digital technology, the information gleaned from third parties is influencing the creation of knowledge in a full gamut of fields, in a quasi-comprehensive manner. This leads us to claim that hearsay, despite the reductionist conceptual scheme to which epistemology has confined it in that indirect testimony, is in any case quintessential in the dissemination of knowledge. This work fully expounds upon the basic mechanism of indirect testimonial transmission and provides an epistemologically founded explanation of the cognitive possibilities of hearsay by investigating, in the light of the anti-reductionist paradigm, three mutually connected epistemic properties, namely trust, reputation and coherence, that are key in the epistemic justification of the truth acquired via an indirect testimony. (shrink)

The possibility of knowledge attributions across contexts (where attributor and subject find themselves in different epistemic contexts) can create serious problems for certain views of knowledge. Amongst such views is subject—sensitive invariantism—the view that knowledge is determined not only by epistemic factors (belief, truth, evidence, etc.) but also by non—epistemic factors (practical interests, etc.). I argue that subject—sensitive invariantism either runs into a contradiction or has to make very implausible assumptions. The problem has been very much neglected but is so (...) serious that one should look for alternative accounts of knowledge. (shrink)

As a belief source, testimony has long been held by theorists of the mind to play a deeply important role in human cognition. It is unclear, however, just why testimony has been afforded such cognitive importance. We distinguish three suggestions on the matter: the number claim, which takes testimony’s cognitive importance to be a function of the number of beliefs it typically yields, relative to other belief sources; the reliability claim, which ties the importance of testimony to its relative truth-conduciveness; (...) and the scope claim, according to which testimony’s importance is a function of its relative representational power, non-numerically conceived. After laying out these three suggestions, we go on to argue that there is little hope of grounding testimony’s cognitive importance in either the number claim or the reliability claim. We conclude with a tentative exploration of the basis and plausibility of the scope claim. (shrink)

Frege’s ‘differential dubitability’ test is a test for differences in cognitive value: if one can rationally believe that p while simultaneously doubting that q, then the contents p and q amount to different ‘cognitive values’. If subject S is rational, does her simultaneous adoption of different attitudes towards p and q require that the difference between p and q(as cognitive values) be transparent to her? It is natural to think so. But I argue that, if attitude anti-individualism is true, then (...) rational differential dubitability does not presuppose that differences in cognitive value be transparent. The significance of this argument lies in what it tells us, both about the notion of cognitive value (and its relation to the differential dubitability test), but also about the prospects for a Burge-type position which aims to combine attitude anti-individualism with a (perhaps qualified) reliance on the differential dubitability test. (shrink)

Social externalism must allow that subjects can misunderstand the content of their own thoughts. I argue that we can exploit this commitment to create a dilemma for the view’s account of communication. To arrive at the first horn of the dilemma, I argue that, on social externalism, it is understanding which is the measure of communicative success. This would be a highly revisionary account of communication. The only way that the social externalist can salvage the claim that mental content is (...) central to explaining communicative success is by adopting an account which gives unacceptable diagnoses as to the success of communicative exchanges. This is the second horn of the dilemma. Contrastingly, certain internalist views of content, which deny that subjects share thought content, do not face the dilemma. I argue that, as such, we should prefer accounts of communication which deny that subjects speak the same language. (shrink)

This paper objects to internalist theories of justification from testimony on the grounds that they can’t accommodate intuitions about a pair of cases. The pair of cases involved is a testimonial version of the cases involved in the New Evil Demon Argument. The role of New Evil Demon cases in motivating contemporary internalist theories of knowledge and justification notwithstanding, it is argued here that testimonial cases make an intuitive case against internalist theories of justification from testimony.

Social epistemology is the study of the social dimensions of knowledge or information. There is little consensus, however, on what the term "knowledge" comprehends, what is the scope of the "social", or what the style or purpose of the study should be. According to some writers, social epistemology should retain the same general mission as classical epistemology, revamped in the recognition that classical epistemology was too individualistic. According to other writers, social epistemology should be a more radical departure from classical (...) epistemology, a successor discipline that would replace epistemology as traditionally conceived. The classical approach could be realized in at least two forms. One would emphasize the traditional epistemic goal of acquiring true beliefs. It would study social practices in terms of their impact on the truth-values of agents' beliefs. A second version of the classical approach would focus on the epistemic goal of having justified or rational beliefs. Applied to the social realm, it might concentrate, for example, on when a cognitive agent is justified or warranted in accepting the statements and opinions of others. Proponents of the anti-classical approach have little or no use for concepts like truth and justification. In addressing the social dimensions of knowledge, they understand "knowledge" as simply what is believed, or what beliefs are "institutionalized" in this or that community, culture, or context. They seek to identify the social forces and influences responsible for knowledge production so conceived. Social epistemology is theoretically significant because of the central role of society in the knowledge-forming process. It also has practical importance because of its possible role in the redesign of information-related social institutions. (shrink)

Philosophers agree that an important part of our knowledge is acquired via testimony. One of the main objectives of social epistemology is therefore to specify the conditions under which a hearer is justified in accepting a proposition stated by a source. Non-reductionists, who think that testimony could be considered as an a priori source of knowledge, as well as reductionists, who think that another type of justification has to be added to testimony, share a common conception about children development. Non-reductionists (...) believe that infants and children are fundamentally gullible and their gullibility could be seen as an example for justifying testimony, while reductionists believe that this gullibility is merely an exception that should be taken into account. The objective of this paper is to review contemporary literature in developmental psychology providing empirical grounds likely to clarify this philosophical debate. What emerges from current research is a more elaborated vision of children’s attitude toward testimony. Even at a very young age, children do not blindly swallow information coming from testimony; doubtful or contradictory information is automatically screened by their cognitive system. Even if they are unable to give positive reasons for the acceptance of a given testimony, young children are not gullible. Such empirical findings tend to call into question the radical opposition between reductionism and non-reductionism. (shrink)

In this paper, we reconsider the notion of epistemic trespassing and attempt to explore possible scenarios in which it could lead to positive outcomes in scientific research and information dissemination. As we will point out, some of the significant discoveries in the history of science would not have been possible were it not for the epistemic trespassers, whose shift in paradigm changed the approach to specific issues for the better. Furthermore, we will present instances where individuals, often labeled as ‘trespassers’ (...) – those who venture into fields outside their expertise – can be considered trustworthy and reliable sources of testimony. Consequently, epistemic trespassing turned out to be essential for the advancement of science. Epistemic trespassing in our age is virtually inevitable – whether it be from a political perspective (to preserve democratic values) or due to purely practical reasons (i.e. searching for information online). There are interdisciplinary fields where a strictly negative characterization of epistemic trespassing would question their methodology since these disciplines rely on experts from various fields. For these reasons, we advocate for a more charitable approach to epistemic trespassing and greater public education to help them distinguish between correct and false information. (shrink)

Here I outline an often under-appreciated position within Anglo-analytic epistemology, that of the apostate to operative metaphilosophical constraints. To help identify and promote awareness of metaphilosophical apostacy, here, I describe the form of metaphilosophical apostacy that I practice in Anglo-analytic epistemology (AAE). My apostasy with respect to AAE begins with significant, metaphilosophical divergences or deep senses of incongruence. A metaphilosophical divergence, on my account, refers to conflict at the level of inquiry-shaping assumptions, constraints, aims, and/or commitments. In this paper, I (...) claim that one way metaphilosophical apostasy emerges in Anglo-analytic epistemology is when inquiry-shaping divergences lead to conceptual indifference. Conceptual indifference, on my account, refers to disinterest that can follow from divergent metaphilosophical and/or aspirational aims and goals for one's favored investigations. To be clear, this is a paper for the growing population of epistemologists who find operative metaphilosophical constraints in AAE ill-fitting. (shrink)

Many epistemologists agree that even very young children sometimes acquire knowledge through testimony. In this paper I address two challenges facing this view. The first (building on a point made in Lackey (2005)) is the defeater challenge, which is to square the hypothesis that very young children acquire testimonial knowledge with the fact that children (whose cognitive immaturity prevents them from having or appreciating reasons) cannot be said to satisfy the No‐Defeaters condition on knowledge. The second is the extension challenge, (...) which is to give a motivated, extensionally‐adequate account of the conditions on testimonial knowledge in early childhood. Neither challenge can be met merely by endorsing externalism about knowledge; but we can meet both by reconceiving the process that eventuates in the child’s consumption of testimony. My central thesis is that this process should be seen as implicating features of the child’s social environment. The result is a novel anti‐individualistic externalism about knowledge. (shrink)

This paper expounds and defends a judge-dependence account of aesthetic concepts, where aesthetic concepts are construed widely, to include for example both concepts of personal taste and more narrowly aesthetic concepts. According to such an account, it can depend on personal features of a judge whether it is correct for that judge to apply an aesthetic concept to a given object. After introducing and motivating the account, the article sets out to explain how some aesthetic questions can seem more objective (...) than others, or how there seem to be experts on some aesthetic questions, despite the judge-dependence of aesthetic concepts. (shrink)

According to the Interpersonal View of Testimony, testimonial justification is non-evidential in nature. I begin by arguing that the IVT has the following problem: If the IVT is true, then young children and people with autism cannot participate in testimonial exchanges; but young children and people with autism can participate in testimonial exchanges; thus, the IVT should be rejected on the grounds that it has over-cognized what it takes to give and receive testimony. Afterwards, I consider what I take to (...) be the two best motivations for the IVT and argue that they both fail. The overarching lesson, then, is that the IVT is unmotivated and false; we should think of testimonial justification as being evidential in nature. (shrink)

We sketch and defend a Commitment View of testimony. Unlike alternative approaches, we focus on the ordinary act of testifying, attempting to identify the commitments essential to this speech act and to explain why those commitments are practically necessary. In view of this account, we argue that given the commitments undertaken in testifying, a speaker’s testimony can qualify as evidence.

A epistemologia do testemunho tem reacendido forte interesse entre a classe dos atuais epistemólogos. Tem sido redescoberta a sua indispensabilidade epistêmica e reassumida a posição de que o testemunho é uma fonte de crenças penetrante e natural, no qual muitas das crenças nele fundamentadas constituem conhecimento e estão justificadas. Reducionistas e antirreducionistas se alternam, repetidamente, para explicar o papel epistêmico do testemunho na justificação da crença testemunhal, gerando um acirrado debate na epistemologia contemporânea. Advogada do Reducionismo local, Elizabeth Fricker refuta (...) a relevância da justificação com base no testemunho para crença testemunhal. Com base nisso, este artigo propõe apresentar algumas críticas aos argumentos de refutação reducionista de Fricker quanto à possibilidade epistêmica do testemunho.: The epistemology of testimony has rekindled strong reigniting interest among the train of current epistemologists. Its epistemic indispensability has been unearthed anew and the importance that the testimony is a natural and pervasive source of beliefs has been recaptured as well, considering that many of the beliefs based on itself constitute knowledge and are justified. Reductionists and Anti-Reductionists alternate, repeatedly, explaining the epistemic role of testimony in justification of testimonial belief, generating a heated debate in contemporary epistemology. Reductionism local lawyer, Elizabeth Fricker, refutes the relevance of justification with testimony-based to testimonial belief. Based on that, this paper aims at presenting some criticism to the reductive refutation of Fricker’s arguments as to the epistemic possibility of testimony. Keywords : Epistemology of testimony. Testimonial justification. Local Reductionism. Anti-Reductionism. Inferential Support. (shrink)

In this paper, I give an answer to the central epistemic question regarding the normative requirements for beliefs based on testimony. My suggestion here is that our best strategy for coming up with the conditions for justification is to look at cases where the adoption of the belief matters to the person considering it. This leads me to develop, in Part One of the paper, an interest-relative theory of justification, according to which our justification for a proposition p depends on (...) our evidence in favour of p in proportion to our interest in p, as signalled by the epistemic risk we take in believing that p is true. In Part Two, I argue that this theory shows that the reductivist view offers a better normative account for the epistemic status of beliefs based on testimony than the credulist one, but it is inaptly named; the view I develop here is better conceived of as The Dependence Account. (shrink)

In his paper “The Social Diffusion of Warrant and Rationality,” Sanford Goldberg argues that relying on testimony makes the warrant for our beliefs “socially diffuse” and that this diminishes our capacity to rationally police our beliefs. Thus, according to Goldberg, rationality itself is socially diffuse. I argue that while testimonial warrant may be socially diffuse (because it depends on the warrants of other epistemic agents) this feature has no special link to our capacity to rationally police our beliefs. Nevertheless, I (...) endorse Goldberg’s claim about rationality and I propose that a Foley-style account of rationality might help to better articulate Goldberg’s proposal. (shrink)

Forming a belief on the basis of accepting another’s testimony often involves a kind of reliance on the (say-so of the) testifier. I argue that this reliance has epistemically relevant features that cannot be represented in most mainstream theories in the epistemology of testimony. The targeted views are those that embrace individualism about testimonial justification.