So-called basic self-knowledge (ordinary knowledge of one's present states of mind) can be seen as both 'baseless' and privileged. The spontaneous self-beliefs we have when we avow our states of mind do not appear to be formed on any particular epistemic basis (whether intro-or extro-spective). Nonetheless, on some views, these self-beliefs constitute instances of (privileged) knowledge. We are here interested in views on which true mental self-beliefs have internalist epistemic warrant that false ones lack. Such views are committed to a (...) form of disjunctivism about basic self-knowledge. We begin by presenting an influential disjunctivist view about perceptual knowledge (Pritchard 2008, 2012, and elsewhere) and articulate a problem for it. We then consider two versions of disjunctivism about basic self-knowledge – one 'constitutivist', the other 'neo-expressivist' – and argue that both can avoid an analogue of this problem for self-knowledge. However, we give reasons for preferring the disjunctivism yielded by neo-expressivism. We conclude by considering briefly whether an acceptable disjunctivism about mental self-beliefs can point the way toward a sensible disjunctivism about perceptual beliefs. (shrink)

An overview of the epistemology of perception, covering the nature of justification, immediate justification, the relationship between the metaphysics of perceptual experience and its rational role, the rational role of attention, and cognitive penetrability. The published version will contain a smaller bibliography, due to space constraints in the volume.

Seeking whether our perception produces knowledge which is not only relative or subjective perspective on things, is to be engaged in the realist/anti-realist debate regarding perception. In this article I pursue the naturalistic approach according to which the question whether perception delivers objective knowledge about the external world is inseparable from empirical investigation into mechanisms of perception. More precisely, I have focused on the dual aspect theory of perception, one of the most influential recent theories (...) of perception which unifies two traditionally opposite approaches to perception: ecological and constructivist. I have tried to show that the dualistic model of human vision does not support the majority of realist theses aimed at non-relativism, but supports only pragmatic realism about observational reports (dorsal system) and the moderate realism about observational reports (ventral system). (shrink)

An introductory overview of the main issues in the epistemology of perception.

Although this study inspects context in general, it is even intended as a prerequisite for a meta-study of contextual time&space in zoo-communication. Moving the scope from linguistics to culture, communication, and semiotics may reveal new similarities between context-perceptions. Paradigmatic historical moves and critical context theories are inspected, asking whether there is aleast-common-multiplefor perceptions of context. The short answer is that context is relational – a bi-product of attention from a position, creating a focused object, and hence an obscured (back-)ground – (...) the attention’s context. A more comprehensive one is that when the focused phenomenon is culture, semiotics, or communication, context becomes embodied. This recognition triggers new questions: What is the relation between embodied, immanent context and this perception’s external, physical context (its surroundings)? If utterances are regarded as constituted by the triad form-content-actandthe dyadic chronotope time&space, what and where is then context? Which challenges will empirical (zoo-)communicational research face if context is split in internal and external versions of context? These questions raise some epistemological and methodological issues. These are discussed based on a framework that regards communication as a micro-macro interplay between utterance and genre. Genres are kinds of communication. More specifically animal genres related to their basic life-functions are calledlife-genres. A conclusion is that life-genres function as both mental and situational contexts. This complicates empirical research on communication in general, and zoo-communication in particular. The paper concludes that contexts’ relational and embodied nature and the ‘situational’ characteristics of life-genres challenge researchers to validate continuously, shifting between contextualising, decontextualising, and recontextualising. (shrink)

In this first book-length examination of the Cartesian theory of visual perception, Celia Wolf-Devine explores the many philosophical implications of Descartes’ theory, concluding that he ultimately failed to provide a completely mechanistic theory of visual perception. Wolf-Devine traces the development of Descartes’ thought about visual perception against the backdrop of the transition from Aristotelianism to the new mechanistic science—the major scientific paradigm shift taking place in the seventeenth century. She considers the philosopher’s work in terms of its (...) background in Aristotelian and later scholastic thought rather than looking at it "backwards" through the later work of the British empiricists and Kant. Wolf-Devine begins with Descartes’ ideas about perception in the _Rules _and continues through the later scientific writings in which he develops his own mechanistic theory of light, color, and visual spatial perception. Throughout her discussion, she demonstrates both Descartes’ continuity with and break from the Aristotelian tradition. Wolf-Devine critically examines Cartesian theory by focusing on the problems that arise from his use of three different models to explain the behavior of light as well as on the ways in which modern science has not confirmed some of Descartes’ central hypotheses about vision. She shows that the changes Descartes made in the Aristotelian framework created a new set of problems in the philosophy of perception. While such successors to Descartes as Malebranche, Locke, Berkeley, and Hume accepted the core of his theory of vision, they struggled to clarify the ontological status of colors, to separate what is strictly speaking "given" to the sense of sight from what is the result of judgments by the mind, and to confront a "veil of perception" skepticism that would have been unthinkable within the Aristotelian framework. Wolf-Devine concludes that Descartes was not ultimately successful in providing a completely mechanistic theory of visual perception, and because of this, she suggests both that changes in the conceptual framework of Descartes are in order and that a partial return to some features of the Aristotelian tradition may be necessary. (shrink)

In this paper, I argue against a perceptual model of moral epistemology. We should not reject the claim that there is a sense in which, on some occasions, emotions may be said to be perceptions of values or reasons. But going further than this, and taking perception as a model for moral epistemology is unhelpful and unilluminating. By focusing on the importance of the dispositions and structures of the self to moral knowledge, I bring out important disanalogies between moral (...) epistemology and typical cases of perceptual expertise. As a result, how we gain, or fail to gain, moral knowledge should not be understood in terms of the operation of a perceptual capacity. (shrink)

So-called basic self-knowledge (ordinary knowledge of one's present states of mind) can be seen as both 'baseless' and privileged. The spontaneous self-beliefs we have when we avow our states of mind do not appear to be formed on any particular epistemic basis (whether intro-or extro-spective). Nonetheless, on some views, these self-beliefs constitute instances of (privileged) knowledge. We are here interested in views on which true mental self-beliefs have internalist epistemic warrant that false ones lack. Such views are committed to a (...) form of disjunctivism about basic self-knowledge. We begin by presenting an influential disjunctivist view about perceptual knowledge (Pritchard 2008, 2012, and elsewhere) and articulate a problem for it. We then consider two versions of disjunctivism about basic self-knowledge – one 'constitutivist', the other 'neo-expressivist' – and argue that both can avoid an analogue of this problem for self-knowledge. However, we give reasons for preferring the disjunctivism yielded by neo-expressivism. We conclude by considering briefly whether an acceptable disjunctivism about mental self-beliefs can point the way toward a sensible disjunctivism about perceptual beliefs. (shrink)

Recent work in visual perception shows that its phenomenal and cognitive aspects cannot be distinguished sharply. A preferable treatment of visual perception is to describe perceptual strategies, which represent the various ways in which perceivers may focus interest, and which are treated in this paper by two examples. Perceptual strategies suggest that both Sense Data theories, on the one hand, and treatments of perception such as Hanson's, on the other, are over-simplified. This work further suggests that the (...) traditional distinction between primary and secondary qualities should be replaced by an epistemological distinction between visual and physical qualities. Such a distinction clarifies epistemological investigations of perception and shows the relevance of experimental investigations of visual perception to epistemological problems. (shrink)

The book illustrates how the human ability to adapt to the environment and interact with it can explain our linguistic representation of the world as constrained by our bodies and sensory perception. The different chapters discuss philosophical, scientific, and linguistic perspectives on embodiment and body perception, highlighting the core mechanisms humans employ to acquire knowledge of reality. These processes are based on sensory experience and interaction through communication.

This paper explores the epistemological significance of the view that we can literally see, hear, and touch evaluative properties (the high-level theory of value perception). My central contention is that, from the perspective of epistemology, the question of whether there are such high-level experiences doesn’t matter. Insofar as there are such experiences, they most plausibly emerged through the right kind of interaction with evaluative capacities that are not literally perceptual (e.g., of the sort involved in imaginative evaluative reflection). But (...) even if these other evaluative capacities turn out not to alter the content of perceptual experience, they would still be sufficient to do all of the justificatory work that high-level experiences are meant to do. I close by observing that it may matter a great deal whether a certain other picture of value perception is true. This alternative picture has it that desires and/or emotions are perceptual-like experiences of value. (shrink)

This is a much shorter version of our entry on the Epistemology of Perception, which will be published in the Oxford Handbook for the Philosophy of Perception in 2013. The longer version has far more references in it, whereas this version is pared down to the essentials.

This essay aims to sharpen debates on the pros and cons of historical epistemology, which is now understood as a novel approach to the study of knowledge, by comparing it with the history of epistemology as traditionally pursued by philosophers. The many versions of both approaches are not always easily discernable. Yet, a reasoned comparison of certain versions can and should be made. In the first section of this article, I argue that the most interesting difference involves neither the subject (...) matter nor goal, but the methods used by the two approaches. In the second section, I ask which of the two approaches or methods is more promising given that both historical epistemologists and historians of epistemology claim to contribute to epistemology simpliciter. Using traditional problems concerning the epistemic role of perception, I argue that the historical epistemologies of Wartofsky and Daston and Galison fail to show that studying practices of perception is philosophically significant. Standard methods from the history of epistemology are more promising, as I show by means of reconstructing arguments in a debate about the relation between perception and judgment in psychological research on the famous moon illusion. (shrink)

The historically most central epistemological issue concerning perception, to which this article will be almost entirely devoted, is whether and how beliefs about physical objects and about the physical world generally can be justified or warranted on the basis of sensory or perceptual experience—where it is internalist justification, roughly having a reason to think that the belief in question is true, that is mainly in question (see the entry justification, epistemic: internalist vs. externalist conceptions of). This issue, commonly referred (...) to as “the problem of the external world,” divides into two closely related sub-issues, which correspond to the first two main sections below. The first of these issues has to do with the nature of sensory experience and its relation to the physical world; it is typically (though as we shall see not altogether perspicuously) formulated as the question of what are the immediate objects of awareness in sensory experience or, in a variant but essentially equivalent terminology, of what is given in such experience. Perhaps the most historically standard, though not currently the most popular answer to this question has been that it is sense-data (private, non-physical entities that actually have the immediately experienced sensory qualities) that are the immediate objects of awareness or that are given. The second issue has to do with the way in which beliefs about the physical world are justified on the basis of such sensory experience. If it is concluded that physical objects are not themselves given, the two main answers to this question are representationalism or indirect realism (the view that the immediate objects of experience represent or depict physical objects in a way that allows one to infer justifiably from such experience to the existence of the corresponding “external” objects) and phenomenalism (the view.. (shrink)

This is a collection of papers on the epistemology of perception, very broadly conceived. It contains cutting-edge work by some of the most important contributors in the field.

Aristotle thinks all our knowledge comes from perception. Yet he doesn't say much about the sense in which our knowledge might be based on or derived from the things we perceive. So what exactly does perception contribute to the more advanced cognitive states that make up our intellectual lives, and how should we understand the nature of its contribution? I argue that perception contributes to these more advanced states by putting us in touch with particular things in (...) a way that's responsive to the universals governing their behavior: perceptible particulars possess certain features because they instantiate certain universals, and perception allows us to discriminate these features and experience them as action-guiding aspects of our environment. So for instance, a patient might exhibit feverish features because she instantiates malarial disease, and a doctor might perceive these feverish features and experience them as soliciting some course of action---as soliciting that the patient be leeched, say. I explain how perception, so understood, can serve as a basis for the development of a perceptually driven form of practical knowledge ; roughly, the form of knowledge possessed by a doctor who knows how to cure a range of patients but could not explain why or how her treatments work. I then explain how such practical knowledge can itself serve as a basis for the theoretically sophisticated grasp of universals Aristotle takes as his cognitive ideal. (shrink)

Robin Le Poidevin (2007) claims that we do form perceptual beliefs regarding order and duration based on our perception of events, but neither order nor duration are by themselves objects of perception. Temporal properties are discernible only when one first perceives their bearers, and temporal relations are discernible only when one first perceives their relata. The epistemic issue remains as to whether or not our perceptual beliefs about order and duration are formed on the causal basis of an (...) event’s objective order and duration. Le Poidevin raises this issue in the form of an epistemological puzzle of time perception, from which he derives the claim that the order and duration of events do not causally contribute to our perceptual beliefs about them. Since his view is motivated by a causal truthmaker principle for grounding knowledge, it also holds that perceptual beliefs about temporal features must be caused by the features themselves in order to count as knowledge. Given these theoretical commitments, there is a puzzle concerning how such perceptual beliefs could constitute knowledge of temporal properties. In response to Le Poidevin, I argue for an account according to which order and duration are objects of perception, causally contribute to our perceptual beliefs about them, and such beliefs are capable of counting as knowledge. I conclude by showing that, on my alternative account, the epistemological puzzle dissolves and his own solution to it fails. (shrink)

Hintikka has criticized psychologists for "hasty epistemologizing," which he takes to be an unwarranted transfer of ideas from psychology (a discipline dealing with questions of fact) into epistemology (a discipline dealing with questions of method and theory). Hamlyn argues, following Hintikka, that Gibson's theory of perception is an example of such an inappropriate transfer, especially insofar as Hamlyn feels Gibson does not answer several important questions. However, Gibson's theory does answer the relevant questions, albeit in a new and radical (...) way, which suggests that the alleged distinction between psychology and epistemology is suspect. In fact, contrary to Hintikka and Hamlyn's claims, Gibson's theory of perception appears to be a valuable source of epistemological as well as psychological ideas. (shrink)

This is an anthology of new papers by top researchers in epistemology and philosophy of mind focused on the epistemology of non-visual perception. The focus of the volume is to highlight the many different domains in which non-visual sensory experience, broadly construed to include multimodal experience associated with emotional and agential perception, plays a rational role, for instance, as an immediate justifier of belief. -/- .

If our experiences are cognitively penetrable, they can be influenced by our antecedent expectations, beliefs, or other cognitive states. Theorists such as Churchland, Fodor, Macpherson, and Siegel have debated whether and how our cognitive states might influence our perceptual experiences, as well as how any such influences might affect the ability of our experiences to justify our beliefs about the external world. This article surveys views about the nature of cognitive penetration, the epistemological consequences of denying cognitive penetration, and the (...) epistemological consequences of affirming cognitive penetration. (shrink)

This paper deals with Ludwik Fleck’s theory of thought styles and Michael Polanyi’s theory of tacit knowledge. Though both concepts have been very influential for science studies in general, and both have been subject to numerous interpretations, their accounts have, somewhat surprisingly, hardly been comparatively analyzed. Both Fleck and Polanyi relied on the physiology and psychology of the senses in order to show that scientific knowledge follows less the path of logical principles than the path of accepting or rejecting specific (...) conventions, where these may be psychologically or sociologically grounded. It is my aim to show that similarities and differences between Fleck and Polanyi are to be seen in the specific historical and political context in which they worked. Both authors, I shall argue, emphasized the relevance of perception in close connection to their respective understanding of science, freedom, and democracy. (shrink)

The present paper introduces a simple framework for modeling the relationship between environmental states, perceptual states, and action. The framework represents situations where an agent’s perceptual state forms the basis for choosing an action, and what action the agent performs determines the agent’s payoff, as a function of the environmental conditions in which the action is performed. The framework is used as the basis for a simulation study of the sorts of correspondence between perceptual and environmental states that are important (...) for successful navigation of the world. Some of the results are surprising and conflict with long held views about the kind of perception-to-environment correspondence that is important for knowledge of the world. The results also raise doubts concerning the view that our perceptual states provide a basis for knowledge of the real structure of the external world. (shrink)

미망사학파의 쿠마릴라와 불교논사 다르마키르티는 비록 생존 연대의 선후 관계에 대해서는 논란이 있지만 동시대의 인물이다. 각각 미망사와 불교의 철학적 논의의 정점을 이끌었다는 평가를 받고 있는 이들의 사상은 지각의 논의에서도 서로 상반된다. 두 사상가 모두 인식을 무모순성이라고 정의하여 유사성을 보이는 듯하나, 쿠마릴라는 무모순성이 내재적 정당성으로 보증된다고 주장하고, 이는 결국 베다의 영원성을 논증할 수 있게 되는 근거가 된다. 반면 다르마키르티는 인식의 무모순성을 인간의 목적 성취로 규정하여 그 지향점이 다르다. 이를 바탕으로 지각에 대한 정의와 논증에서도 이들은 첨예하게 대립한다. 쿠마릴라는 지각은 다르마를 알 수 없는 (...) 것이라고 하고 비분별 지각과 분별적 지각으로 구분한다. 초세간적 능력을 가진 요가행자나 일체지자의 존재를 부정하게 되며, 이는 결국 세간의 경험적 상식적인 수준의 지각을 논의한다. 반면 다르마키르티는 지각의 비분별임을 강조하며 언어와 결합가능성이 배제된 것이라고 정의하며, 개별상만이 지각의 인식대상이라고 한정한다. 그리고 지각을 네 가지로 구분하여, 요가행자의 지각을 인정하며, 일체지자의 존재를 긍정할 수 있는 논리적 근거를 제공한다. 쿠마릴라와 다르마키르티의 지각의 논의는 서로 다른 인식론적 토대 위에서 서로 다른 지향점을 내포하고 있음을 알 수 있다. (shrink)

Specialized monographs can be useful sorts of things, but this book may not truly fit the bill. In it, Wolf-Devine offers an exegesis of Descartes' accounts of the physiology of the visual system and of our perception of light, color, situation, distance, size, and shape, along with some background discussion both of Descartes' predecessors and of Cartesian philosophy. While she also claims to be interested in the "big picture" changes in natural philosophy and epistemology to which Descartes's work contributes, (...) these concerns intrude on the work only intermittently. Still even with the more limited set of aims, the book may both overreach its monographic grasp and fall a bit short. (shrink)

Science tends to find a solution to the problem of the unreliability of human perception by understanding objectivity as the absence of subjectivity. However, from a phenomenological point of view, subjectivity is not so much a problem as an inevitable starting-point. That does not mean that the problem of the correctness of people’s accounts of their own perceptions is no problem at all—in fact the problem is so great that the authority of a person’s knowledge of his or her (...) own mind can be doubted. The problem of subjectivity can only be solved when it is related to the problem of interpretation. Analyses of narratives are interpretations of interpretations. The phenomenologist must make sure that the data he or she analyses are lived interpretations and not interpretations of interpretations. (shrink)

There is debate among virtue epistemologists concerning what is the nature of an intellectual virtue. Linda Zagzebski in Virtues of the Mind , for instance, argues that an intellectual virtue has both a success and motivational component. Furthermore, Zagzebski defines knowledge with reference to acts of intellectual virtue. An agent S knows p iff S performs an act of intellectual virtue in forming the belief that p. This means that Zagzebski is committed to the counter-intuitive claim that low-grade knowledge requires (...) the agent to be epistemically motivated to form such low-grade beliefs. In this project I look at empirical research in cognitive psychology which suggests that epistemic motivations are involved in low-grade processing. Research on the role of attention in vision and memory suggests that attentional focus is necessary in order to have low-grade knowledge. And research on the relationship between motivation and attentional processing suggests that motivation informs attentional operations. The next step in the argument aims to show that such motivations are epistemic in that they are motivations to attain a cognitive state whose value is alethically related. Thus, one's epistemic motivations are necessary for low-grade knowledge. The second half of my project turns to higher-grade knowledge, i.e., testimony. It is here that I apply Zagzebski's account of knowledge to testimony. I do this to give a heretofore counterexample free definition of testimonial knowledge. Altogether, the project shows how Zagzebski's theory can account for the major modes by which we acquire empirical knowledge. (shrink)

The present work is a translation of The Perception Chapter of Jewel of Reflection on the Truth, a foundational text by the great fourteenth-century Indian logician Gangesa Upadhyaya. The authors' introduction and running commentary to the translation provide essential theoretical and historical background, contextualization, analysis, and comparison of Nyaya and Western traditions. Includes a detailed glossary and index. Published by American Institute of Buddhist Studies (AIBS).

Metaphysical and epistemological commitments seem to determine the course of research in the field of logic as well as its theoretical interpretation. What we take the objects of logical investigation to be determines our views on how they are to be known, and our view of the possible types of knowledge in turn places restrictions on what kinds of things those objects could be. Perhaps it is true that logical studies can be pursued to great lengths without indulging in general (...) declarations about the nature of reality or of human knowledge. But to say this is very far from admitting the possibility of “logic without ontology.” The thoughtful beginning student in logic quickly wants to know what it is he or she is really studying and what, precisely, it has to do with the real worlds. The slightest philosophical stimulation will lead him or her, further, to ask about the evidence supporting the various sorts of claims made as the course progresses, and about the methodology of logic from a scientific point of view. Rarely is any answer given to such questions, much less a reasonable and well elaborated one. Questions of this type are usually discouraged and avoided by text books and instructors, and there may even be some suggestion that to ask them evidences confusion and stupidity. But when they are pressed it turns out that logic as a field of knowledge and inquiry remains in chaos at its philosophical foundations. I mean by this that the leading investigators cannot agree—indeed, they disagree in dimensions categorial—concerning what the subject of logical knowledge is, and concerning the modes of logical knowledge. (shrink)

Charles Travis presents a series of essays on philosophy of perception, inspired by the insights of Gottlob Frege. He engages with a range of contemporary thinkers, and explores key issues including how perception can make the world bear on what we do or think, and what sorts of capacities we draw on in representing something as (being) something.

Some metaphysical disjunctivists about conscious perceptual experience argue that their position has attractive, anti-sceptical, epistemological consequences. Perceiving a particular round red ball is a matter of being in a conscious condition, which serves as the ground for judgement that that thing is round and red, that is inconsistent with the falsity of that judgement. For it consists in a relation of acquaintance with that very thing and its shape and colour. Hence the ground for judgement suffices for its truth in (...) a way that contributes to understanding the status of the judgement as knowledgeable. Here I explore an analogous way in which it might be argued that the metaphysics of conscious perception may have epistemological benefits. This concerns, not the fact that such experience consists in the relational presentation of particular worldly objects and their perceptible properties, but the fact that it consists in their presentation from a particular point of view. This is what enables perception of those particular worldly things, rather than any others, and makes sense of their continued existence unperceived. For this point of view may evidently change, independently of the existence and nature of what is presented on any specific occasion, leaving those very things as they are, although now unperceived. (shrink)

Does perception provide us with direct and unmediated access to the world around us? The so-called 'argument from illusion ' has traditionally been supposed to show otherwise: from the subject's point of view, perceptual illusions are often indistinguishable from veridical perceptions; hence, perceptual experience, as such, cannot provide us with knowledge of the world, but only with knowledge of how things appear to us. Disjunctive accounts of perceptual experience, first proposed by John McDowell and Paul Snowdon in the early (...) 1980s and at the centre of current debates in the philosophy of perception, have been proposed to block this argument. According to the traditional view, a case of perception and a subjectively indistinguishable illusion or hallucination can exemplify what is fundamentally the same kind of mental state even though they differ in how they relate to the non-mental environment. In contrast, according to the disjunctive account, the concept of perceptual experience should be seen as essentially disjunctive, encompassing two distinct kinds of mental states, namely genuinely world-involving perceptions and mere appearances. This book presents seven recent essays on disjunctivism first published in two special issues of Philosophical Explorations: An International Journal for the Philosophy of Mind and Action. (shrink)

In this paper I argue for a version of the Total Evidence view according to which the rational response to disagreement depends upon one's total evidence. I argue that perceptual evidence of a certain kind is significantly weightier than many other types of evidence, including testimonial. Furthermore, what is generally called "The Uniqueness Thesis" is actually a conflation of two distinct principles that I dub "Evidential Uniqueness" and "Rationality Uniqueness." The former principle is likely true but the latter almost certainly (...) false. Seeing why the Rationality Uniqueness fails opens the door to seeing how mutual reasonable disagreement is possible even among those who share the same evidence. (shrink)