The five modes are a list of tools used by ancient sceptics to guide dogmatic people towards suspending their judgement. Attributed to Agrippa and used extensively by Sextus Empiricus, these modes are still widely discussed today by epistemologists and specialists in ancient philosophy. Scholars disagree, however, on how to understand the way the five modes are used together and what the logical form of the sceptical strategy behind their deployment is. This paper offers a reconstruction of the system of the (...) five modes that avoids these problems. In specific, unlike previous reconstructions, it includes a non-trivial version of the mode of relativity, avoids committing the sceptic to a normative principle and follows the textual evidence more closely. Moreover, I argue that the system can be better understood as a list of steps in a process, whose underlying logic can be expressed by a single algorithm. (shrink)

I outline Greco’s response to the Pyrrhonian challenge to epistemic externalist theories of knowledge and offer two points of criticism. I also argue, however, that there is an account of epistemic luck available which can cast some light on the dispute that Greco is concerned with, and which could, in principle at least, be regarded as being in the spirit of the proposal that Greco sets out.

This paper introduces and argues for the hypothesis that judgments of testimonial worth are central to our practice of normatively appraising speech. It is argued that judgments of testimonial worth are central both to the judgement that an agent has lied, and to the acceptance of testimony. The hypothesis that, in lying, an agent necessarily displays poor testimonial worth, is shown to resolve a new puzzle about lying, and the recalcitrant problem raised by the existence of bald faced lies, and (...) selfless assertions. It is then shown that the notion of testimonial worth allows us to capture the distinction between taking a speaker at their word, and treating them as a mere indicator of the truth in a way other theories fail to do. (shrink)

En este trabajo se defiende el fiabilismo frente al experimento mental clásico del "genio maligno". Al hacerlo, enfatizo dos de sus supuestos clave; y después desarrollo una serie de variadas respuestas asequibles al fiabilista, mostrando que las mismas pueden ser útiles para explicar o negar las intuiciones iniciales de la propuesta del "genio maligno", de una manera consistente con el fiabilismo. Mi conclusión es que el experimento del "genio maligno" no socava la fiablidad como el sello distintivo de la justificación (...) epistémica. (shrink)

Debate rages in virtue epistemology between virtue reliabilists and responsibilists. Here, I develop and argue for a new kind of responsibilism that is more conciliar to reliabilism. First, I argue that competence-based virtue reliabilism cannot adequately ground epistemic credit. Then, with this problem in hand, I show how Aristotle’s virtue theory is motivated by analogous worries. Yet, incorporating too many details of Aristotelian moral theory leads to problems, notably the problem of unmotivated belief. As a result, I suggest a re-turn (...) to Aristotle to develop a distinctively epistemological virtue theory that does not require any motive or affect for epistemic virtue. Nevertheless, my theory affirms that virtues are acquired, agent-expressive traits. The result is a conciliar responsibilism that leans closer to reliabilism. I end by arguing that my virtue responsibilism can solve worries facing both reliabilism and responsibilism. (shrink)

Recent literature in epistemology has focused on the following argument for skepticism (SA): I know that I have two hands only if I know that I am not a handless brain in a vat. But I don't know I am not a handless brain in a vat. Therefore, I don't know that I have two hands. Part I of this article reviews two responses to skepticism that emerged in the 1980s and 1990s: sensitivity theories and attributor contextualism. Part II considers (...) the more recent ‘neo-Moorean’ response to skepticism and its development in ‘safety’ theories of knowledge. Part III argues that the skeptical argument set out in SA is not of central importance. Specifically, SA is parasitic on skeptical reasoning that is more powerful and more fundamental than that displayed by SA itself. Finally, Part IV reviews a Pyrrhonian argument for skepticism that is not well captured by SA, and considers a promising strategy for responding to it. (shrink)

Duncan Pritchard has, in the years following his (2005) defence of a safety-based account of knowledge in Epistemic Luck, abjured his (2005) view that knowledge can be analysed exclusively in terms of a modal safety condition. He has since (Pritchard in Synthese 158:277–297, 2007; J Philosophic Res 34:33–45, 2009a, 2010) opted for an account according to which two distinct conditions function with equal importance and weight within an analysis of knowledge: an anti-luck condition (safety) and an ability condition-the latter being (...) a condition aimed at preserving what Pritchard now takes to be a fundamental insight about knowledge: that it arises from cognitive ability (Greco 2010; Sosa 2007, 2009). Pritchard calls his new view anti-luck virtue epistemology (ALVE). A key premise in Pritchard’s argument for ALVE is what I call the independence thesis; the thesis that satisfying neither the anti-luck condition nor the ability condition entails that the other is satisfied. Pritchard’s argument for the independence thesis relies crucially upon the case he makes for thinking that cognitive achievements are compatible with knowledge-undermining environmental luck—that is, the sort of luck widely thought to undermine knowledge in standard barn facade cases. In the first part of this paper, I outline the key steps in Pritchard’s argument for anti-luck virtue epistemology and highlight how it is that the compatibility of cognitive achievement and knowledge- undermining environmental luck is indispensible to the argument’s success. The second part of this paper aims to show that this compatibility premise crucial to Pritchard’s argument is incorrect. (shrink)

A belief is reflectively lucky if it is a matter of luck that the belief is true, given what a subject is aware of on reflection alone. Various epistemologists have argued that any adequate theory of knowledge should eliminate reflective luck, but doing so has proven difficult. This article distinguishes between two kinds of reflective luck arguments in the literature: local arguments and global arguments. It argues that local arguments are best interpreted as demanding, not that one be reflectively aware (...) of the reliability of the sources of one’s beliefs, but that one’s beliefs be attributable to one as one’s own. The article then argues that global arguments make illegitimate demands, because they require that we be ultimately answerable for our beliefs. In the end, the article argues that epistemologists should shift their focus away from reflective luck and toward the conditions under which beliefs are attributable to cognitive agents. (shrink)

Current epistemological orthodoxy has it that knowledge is incompatible with luck. More precisely: Knowledge is incompatible with epistemic luck . This is often treated as a truism which is not even in need of argumentative support. In this paper, I argue that there is lucky knowledge. In the first part, I use an intuitive and not very developed notion of luck to show that there are cases of knowledge which are “lucky” in that sense. In the second part, I look (...) at philosophical conceptions of luck and come to the conclusion that knowledge can be lucky in those senses, too. I also turns out that a probabilistic notion of luck can help us see in what ways a particular piece of knowledge or belief can be lucky or not lucky. (shrink)

This paper presents a puzzle about moral responsibility. The problem is based upon the indeterminacy of relevant reference classes as applied to action. After discussing and rejecting a very tempting response I propose moral contextualism instead, that is, the idea that the truth value of judgments of the form S is morally responsible for x depends on and varies with the context of the attributor who makes that judgment. Even if this reply should not do all the expected work it (...) is a first step. (shrink)

Our beliefs utilize various sources: perception, memory, induction, etc. We trust these sources to provide reliable information about the world around us. My dissertation investigates how this trust could be justified. Chapter one introduces background material. I argue that justification rather than knowledge is of primary epistemological importance, discuss the internalism/externalism debate, and introduce an evidentialist thesis that provides a starting point/framework for epistemological theorizing. Chapter two introduces a puzzle concerning justification. Can a belief source provide justification absent prior justification (...) for believing it's reliable? Any answer appears to either make justifying the reliability of a source intellectually unsatisfying or all together impossible. Chapter three considers and rejects a plethora of proposed solutions to our puzzle. Investigating these solutions illustrates the need to further investigate evidence, evidence possession, and evidential support. Chapter four discusses the metaphysics of evidence. I argue that evidence always consists of a set of facts and that fact-proposition pairs stand in confirmation relations isomorphic to those holding between pairs of propositions. Chapter five argues that justification requires what I call actually connected possession of supporting evidence: a subject must be aware of supporting evidence and of the support relation itself. Chapter six argues that the relation constitutive of a set of facts being justificatory evidence is a sui generis and irreducible relation that is knowable a priori. Chapter seven begins by showing how Richard Fumerton's acquaintance theory meets the constraints on a theory of justification laid down in previous chapters. I modify the theory so as to: make room for fallible foundational justification, and allow inferential justification absent higher-order beliefs about evidential connections. Chapter eight applies the developed theory of justification to our initial puzzle. I show how my modified acquaintance theory is in a unique position to vindicate the idea that necessarily a source provides a person with justification only if she is aware of evidence for the reliability of that source. However, this awareness of evidence for a source's reliability falls short of a justified belief and thereby avoids impalement from our dilemma's skeptical horn. (shrink)

In this entry, I offer a critical analysis of virtue epistemology, which is a fundamental collection of recent approaches to epistemology. After a few remarks on the roots of this view, I reconstruct the key features of the two main accounts of virtue epistemology and I discuss how these accounts respond to some traditional epistemological challenges. -/- Questo contributo propone una disamina critica dell’epistemologia delle virtù, una delle correnti più importanti della teoria della conoscenza contemporanea. Dopo un breve affondo sulle (...) origini di questa corrente, vengono analizzate le caratteristiche dei due approcci fondamentali all’epistemologia delle virtù e le risposte che essi offrono ad alcuni problemi epistemologici tradizionali. (shrink)

En este trabajo se explora una conexión entre el contextualismo y el fiabilismo. El propósito es desarrollar las líneas centrales de un acercamiento contextualista para resolver la crítica internista de que las nociones fiabilistas de justificación y de conocimiento no son adecuadas porque no recogen las intuiciones correspondientes a que un sujeto que está justificado o que sabe es racional y epistemológicamente responsable. Se argumenta que esta crítica y el escepticismo pirrónico comparten un presupuesto común, a saber, la cláusula internista, (...) por lo que, si es posible limitar el alcance de esta cláusula a través del contextualismo distinguiendo dos contextos diferentes, entonces también es posible hacer uso de esta distinción para dar respuesta a la crítica internista al fiabilismo. In this paper, we explore a connection between reliabilism and contextualism. our purpose is to draw up a contextualist approach to solve the critique that the reliabilist notions of justification and knowledge are not satisfactory because there is no room for the intuitions that a subject who is justified or knows is rational and epistemologically responsible. We will argue that this critique and the Pyrrohnian skepticism share the same assumption, viz., the internalist clause. Thus, if it is possible to limit the scope of this clause using contextualism, making a distinction between two different contexts, then it is also possible to use this distinction to offer an answer to the internalist critique to reliabilism. (shrink)