The ambiguity theory of “knows” is the view that knows and its cognates have more than one propositional sense—i.e., more than one sense that can properly be used in “knows that” etc. constructions. The ambiguity theory of “know” has received relatively little attention as an account of the truth-conditions for knowledge ascriptions and denials—especially compared to views like classical, moderate invariantism and epistemic contextualism. In this paper, it is argued that the ambiguity theory (...) of knows has an advantage over both classical, moderate invariantism and epistemic contextualism. This advantage is that it is the only one of these views that can account for “diverging knowledge responses without inconsistency” —i.e., cases in which, for the same subject S and proposition p, one and the same speaker says truly “S knows p” but instead could have truly said “S does not know p” and vice versa. This paper argues both for the existence of DRWI scenarios and the ability of the ambiguity theory of knows to best explain their existence. (shrink)

The ambiguity theory of ‘knows’ is the view that ‘knows’ and its cognates have more than one sense, and that which sense of ‘knows’ is used in a knowledge ascription or denial determines, in part, the meaning (and as a result the truth conditions) of that knowledge ascription or denial. In this paper, I argue that the ambiguity theory of ‘knows’ ought to be taken seriously by those drawn to epistemic contextualism. In doing so (...) I first argue that the ambiguity theory of ‘knows’ is a distinct view from epistemic contextualism. Second, I provide independent philosophical and linguistic considerations to motivate the ambiguity theory. Third, I argue that the ambiguity theory has the same central, generally agreed upon virtues ascribed to epistemic contextualism (namely, the ability to solve certain persistent epistemological problems relating to skeptical arguments and the ability to preserve the truth of most of our everyday, ordinary usages of ‘knows’ and its cognates). Finally, I provide an ambiguity-theory-friendly account of why contextualism may be initially appealing, and why this shouldn’t dissuade us from taking the ambiguity theory seriously nonetheless. (shrink)

Everyone has mistaken one thing for another, such as a stranger for an acquaintance. A person who has mistaken two things, Joseph Camp argues, even on a massive scale, is still capable of logical thought. In order to make that idea precise, one needs a logic of confused thought that is blind to the distinction between the objects that have been confused. Confused thought and language cannot be characterized as true or false even though reasoning conducted in such language can (...) be classified as valid or invalid. To the extent that philosophers have addressed this issue at all, they take it for granted that confusion is a kind of ambiguity. Camp rejects this notion; his fundamental claim is that confusion is not a mental state. To attribute confusion to someone is to take up a paternalistic stance in evaluating his reasoning. Camp proposes a novel characterization of confusion, and then demonstrates its fruitfulness with several applications in the history of philosophy and the history of science. (shrink)

Traditionally the modern theory of ideas has been discussed primarily in reference to its alleged introduction of a veil of mental items between the mind and the world, which leads, through the empiricists, to radical skepticism about the existence of an external world. Here I propose to emphasize an entirely different aspect of the Cartesian theory of ideas which, in my view, is more fundamental in opening the empiricist path that leads to Hume’s radical skepticism. I argue that (...) what I call the “phenomenological presentation” model of ultimate justification is rooted in a fundamental ambiguity between sensible and intellectual apprehension insinuated by Descartes’s view of “clear and distinct” ideas together with his emphasis on the priority of intuition over logical inference. Sensible apprehension relies on immediate acquaintance with items phenomenologically and ostensively present before the mind as given particulars. The phenomenological presentation model takes its clues from sensible apprehension, although the items present before the mind might themselves be either ideas of the understanding, images of the imagination, sensory impressions, or material external objects. Intellectual apprehension, by contrast, as I illustrate with Leibniz’s model of our knowledge of concepts and truths of reason, consists in the discursive, non-ostensive grasping of the generality of abstract concepts and of formal structures . For Leibniz, all intellectual apprehension is unambiguously “logical discursive apprehension” as opposed to “direct ostensive apprehension.” Thus, Leibniz unmistakably disambiguates Descartes’s model in favor of a precise intellectual model. The empiricists, by contrast, correspondingly disambiguate Descartes’s conception in favor of an entirely sensible model. (shrink)

Traditionally the modern theory of ideas has been discussed primarily in reference to its alleged introduction of a veil of mental items between the mind and the world, which leads, through the empiricists, to radical skepticism about the existence of an external world. Here I propose to emphasize an entirely different aspect of the Cartesian theory of ideas which, in my view, is more fundamental in opening the empiricist path that leads to Hume’s radical skepticism. I argue that (...) what I call the “phenomenological presentation” model of ultimate justification is rooted in a fundamental ambiguity between sensible and intellectual apprehension insinuated by Descartes’s view of “clear and distinct” ideas together with his emphasis on the priority of intuition over logical inference. Sensible apprehension relies on immediate acquaintance with items pheno-menologically and ostensively present before the mind as given particulars. The phenomenological presentation model takes its clues from sensible apprehension, although the items present before the mind might themselves be either ideas of the understanding, images of the imagination, sensory impressions, or material external objects. Intellectual apprehension, by contrast, as I illustrate with Leibniz’s model of our knowledge of concepts and truths of reason, consists in the discursive, non-ostensive grasping of the generality of abstract concepts and of formal structures . For Leibniz, all intellectual apprehension is unambiguously “logical discursive apprehension” as opposed to “direct ostensive apprehension.” Thus, Leibniz unmistakably disambiguates Descartes’s model in favor of a precise intellectual model. The empiricists, by contrast, correspondingly disambiguate Descartes’s conception in favor of an entirely sensible model.Tradicionalmente, a teoria moderna das idéias foi discutida principalmente em conexão com a sua suposta introdução de um véu de itens mentais entre a mente e o mundo que leva, por meio dos empiristas, ao ceticismo radical sobre a existência de um mundo externo. Aqui eu proponho enfatizar um aspecto completamente diferente da teoria Cartesiana das idéias que, na minha visão, é mais fundamental no que diz respeito a abrir o caminho empirista que conduz ao ceticismo radical de Hume. Eu argumento que o que eu chamo de o modelo de “apresentação fenomenológica” de justificação última está baseado em uma ambigüidade fundamental entre apreensão sensível e intelectual insinuada pela visão de Descartes de idéias “claras e distintas” junto com a sua ênfase na prioridade da intuição sobre inferência lógica. A apreensão sensível confia no contato imediato com itens presentes fenomenologicamente e ostensivamente perante a mente como particulares dados. O modelo de apresentação fenomenológica está inspirado na apreensão sensível, embora os itens que se apresentam perante a mente poderiam ser eles mesmos idéias do entendimento, figuras da imaginação, impressões sensórias, ou objetos externos materiais. A apreensão intelectual, por contraste, como eu ilustro com o modelo de Leibniz de nosso conhecimento de conceitos e verdades da razão, consiste na compreensão discursiva e não-ostensiva da generalidade de conceitos abstratos e de estruturas formais . Para Leibniz, toda a apreensão intelectual é claramente “apreensão discursiva lógica” por oposição a “apreensão ostensiva direta”. Assim, Leibniz claramente desfaz a ambigüidade do modelo de Descartes em favor de um modelo intelectual preciso. Os empiristas, por contraste, desfazem a ambigüidade da concepção de Descartes em favor de um modelo completamente sensível. (shrink)

SUMMARYTo be Marxist at the turn of the twentieth century was highly contested. During this crisis of Marxism, identity politics were acute, exemplified by the private and public debate between Eduard Bernstein and Karl Kautsky. With Bernstein's celebrated turn away from the Marxist theory of his day, the grounds for being Marxist were at stake. Was it possible to criticise Marx's analysis of industrial capitalism, his account of historical change and his hard-nosed class politics, and yet still be in (...) a position to carry his name forward? Moreover, the springing-up of another identity, Revisionist, suggested that being Marxist was ambiguous. If one accepted Bernstein's and the Revisionists' point that Marxists had become too orthodox, leaving Revisionists as the true heirs of Marx's critical socialist spirit, then the Marxist identity was so open as to be meaningless. In this article, I contend that the name-calling of this period, the Revisionismusstreit, should be seen as creative. In contrast to politico-ideological perceptions of the Streit, which construe the clash of Marxist and Revisionist as representative of foundational Social Democratic party political realities, I highlight the manner in which being Marxist—the veneration of Marx's and Friedrich Engels's word into a Marxology of sorts by Marxists and Revisionists alike—held a certain epistemic value in its own right. (shrink)

Below I ask whether the theoretical assumptions of the sociology of knowledge imply a subjectivistic and relativistic approach to cognition theory—a matter that has already been discussed in Polish subject literature (among others by Adam Schaff). Does the “social conditioning of cognition” conception propounded by the sociology of knowledge deny the existence of objective truth and adequate knowledge? Karl Mannheim himself called the sociology of knowledge an anti-relativist position. The critics of his anti-relativist argumentation say (...) it is full of ambiguities and contradictions. I will attempt to take a closer look at this problem, and, at the same time, at the relation between Mannheim’s sociology of knowledge project and such measures of the adequacy of knowledge as the coherence and general consensus criterion. The main question I will try to answer is whether the Mannheimian sociology of knowledge project is a form of epistemological relativism (in the specific meaning of the term I use here), and if not, in what sense and to what degree it can be considered a position convergent with the relative truth conception. (shrink)

According to contextualist accounts, the truth value of a given knowledge ascription may vary with features of the ascriber's context. As a result, the following may be true: "X doesn't know that P but Y says something true in asserting 'X knows that P'". The contextualist must defend his theory in the light of this unpleasant but inevitable consequence. The best way of doing this is to construe the context sensitivity of knowledge ascriptions not as deriving from (...) an alleged indexicality of the word "know" nor from its vagueness or ambiguity, but rather from a distinct semantic feature of the word "know", namely its unspecificity. (shrink)

This thesis is an examination and critique of naturalistic representational theories of phenomenal character. Phenomenal character refers to the distinctive quality that perceptual and sensational experiences seem to have; it is identified with 'what it is like' to undergo experiences. The central claims of representationalism are that phenomenal character is identical with the content of experience and that all representational states, bearing appropriate relations to the cognitive system, are conscious experiences. These claims are taken to explain both how conscious experiential (...) states arise and their nature. After examining the desiderata for naturalistic explanations, I argue that theories which ascribe nonconceptual content to experiences are the most plausible versions of representationalism. Further, causal covariation and teleological theories yield distinctive and interesting representationalist positions, hence, they become the focus of this study. To assess representationalism, I investigate whether all differences in phenomenal character can be correlated with differences in content. I claim that a useful distinction can be drawn between implicit and explicit content, which allows one to best describe the phenomena of perfect and relative pitch. I then argue that ambiguous figures show that two experiences can have the same content but different phenomenal character. I explicate the Inverted Earth hypothesis and claim that to identify content and phenomenal character, representationalists either have to condone the possibility of philosophical zombies, or hold that people lack authoritative first-person knowledge of their current experiences. Both these positions are unpalatable. Finally, I argue that representationalists cannot ascribe contents to experiences of novel colours to account for their phenomenal character. I also question, in light of dissociation phenomena, whether there is one distinctive relationship that all experiences bear to the cognitive system. I conclude that phenomenal character cannot be identical with the type of content under investigation, and that naturalistic representationalist theories cannot fully explain conscious experience. (shrink)

The authors consider the relationship between knowledge and image, though multi-faceted, to be one of reciprocal dependence. But how do images carry and convey knowledge? The ambiguities of images means that interpretations do not necessarily follow the intention of the image producers. Through an array of different cases, the chapters critically reflect upon how images are mobilised and used in different knowledge practices, within certain knowledge traditions, in different historical periods. They question what we take for (...) granted, what seems evident, what goes without saying. This approach spans across established categories such as «scientific imaging», «religious images» and «artworks», and considers how images may contribute meaning across such categories. (shrink)

This new edition of the classic Contemporary Theories of Knowledge has been significantly updated to include analyses of the recent literature in epistemology.

This book is an accessible introduction to contemporary epistemology, the theory of knowledge. It introduces traditional topics in epistemology within the context of contemporary debates about the definition, sources, and limits of human knowledge. Rich in examples and written in an engaging style, it explains the field while avoiding technical detail. It relates epistemology to work in cognitive science and defends a plausible version of explanationism regarding epistemological method.

Knowledge-first epistemology includes a knowledge norm of action: roughly, act only on what you know. This norm has been criticized, especially from the perspective of so-called standard decision theory. Mueller and Ross provide example decision problems which seem to show that acting properly cannot require knowledge. I argue that this conclusion depends on applying a particular decision theory which is ill-motivated in this context. Agents’ knowledge is often most plausibly formalized as an ambiguous epistemic (...) state, and the theory of decision under ambiguity is then the appropriate modeling tool. I show how to model agents as acting rationally on the basis of their knowledge according to such a theory. I conclude that the tension between the knowledge norm of action and formal decision theory is illusory; the knowledge-first paradigm should be used to actively select the decision-theoretical tools that can best capture the knowledge-based decisions in any given situation. (shrink)

Ours is an age of offense, a time of reactionary shock—always received, never given. Ours is an age that has forgone cultural narratives, a time of individualism—wherein personal identities trump the collective spirit. Ours is an age of failing earth, a time of ecological collapse—yet the consumption of global capitalism continues to run amok. But don't fear. You have the correct worldview, the best solutions. It’s not your fault these things are happening. It’s the president’s, the immigrant’s, and the Islamicist’s. (...) Or perhaps It’s the socialist’s, the tree hugger’s, and the baby killer’s. But it’s not your fault. Never yours. For the world exists as you see it—in an echo chamber lined with golden pixels. Do I still have your attention? Then join me. Within the covers of Narrativizing Theories, I dive into ambiguity and aesthetics to depict how clashing worldviews exist side by side yet remain mutually incompatible. I examine how cultures distinguish between acceptable and unacceptable beliefs, embodiments, and identities. And I outline an aesthetic theory of ambiguity that highlights—through the twists and turns of literature—the provisionality of knowledge and the narrativization of reality. (shrink)

The contemporary use of the term ‘complexity’ frequently indicates that it is considered a unified concept. This may lead to a neglect of the range of different theories that deal with the implications related to the notion of complexity. This paper, integrating both the English and the Latin traditions of research associated with this notion, suggests a more nuanced use of the term, thereby avoiding simplification of the concept to some of its dominant expressions only. The paper further explores the (...) etymology of ‘complexity’ and offers a chronological presentation of three generations of theories that have shaped its uses; the epistemic and socio‐cultural roots of these theories are also introduced. From an epistemological point of view, this reflection sheds light on the competing interpretations underlying the definition of what is considered as complex. Also, from an anthropological perspective it considers both the emancipatory as well as the alienating dimensions of complexity. Based on the highlighted ambiguities, the paper suggests in conclusion that contributions grounded in contemporary theories related to complexity, as well as critical appraisals of their epistemological and ethical legitimacy, need to follow the recursive feedback loops and dynamics that they constitute. In doing so, researchers and practitioners in education should consider their own practice as a learning process that does not require the reduction of the antagonisms and the complementarities that shape its own complexity. (shrink)

In this impressive second edition of Theory of Knowledge, Keith Lehrer introduces students to the major traditional and contemporary accounts of knowing. Beginning with the traditional definition of knowledge as justified true belief, Lehrer explores the truth, belief, and justification conditions on the way to a thorough examination of foundation theories of knowledge,the work of Platinga, externalism and naturalized epistemologies, internalism and modern coherence theories, contextualism, and recent reliabilist and causal theories. Lehrer gives all views careful (...) examination and concludes that external factors must be matched by appropriate internal factors to yield knowledge. This match of internal and external factors follows from Lehrer’s new coherence theory of undefeated justification. In addition to doing justice to the living epistemological traditions, the text smoothly integrates several new lines that will interest scholars. Also, a feature of special interest is Lehrer’s concept of a justification game.This second edition of Theory of Knowledge is a thoroughly revised and updated version that contains several completely new chapters. Written by a well-known scholar and contributor to modern epistemology, this text is distinguished by clarity of structure, accessible writing, and an elegant mix of traditional material, contemporary ideas, and well-motivated innovation. (shrink)

Epistemology or the theory of knowledge is one of the cornerstones of analytic philosophy, and this book provides a clear and accessible introduction to the subject. It discusses some of the main theories of justification, including foundationalism, coherentism, reliabilism, and virtue epistemology. Other topics include the Gettier problem, internalism and externalism, skepticism, the problem of epistemic circularity, the problem of the criterion, a priori knowledge, and naturalized epistemology. Intended primarily for students taking a first class in epistemology, (...) this lucid and well-written text would also provide an excellent introduction for anyone interested in knowing more about this important area of philosophy. (shrink)

In this important new text, Keith Lehrer introduces students to the major traditional and contemporary accounts of knowing. Beginning with the accepted definition of knowledge as justified true belief, Lehrer explores the truth, belief and justification conditions on the way to a thorough examination of foundation theories of knowledge, externalism and naturalized epistemologies, internalism and modern coherence theories as well as recent reliabilist and causal theories. Lehrer gives all views careful examination and concludes that external factors must be (...) matched by appropriate internal ones to yield knowledge. Readers of Professor Lehrer's earlier book _Knowledge_ will want to know that this text adopts the framework of that classic text. But _Theory of Knowledge_ is a completely rewritten and updated version of that book that has been simplified throughout for student use. (shrink)

In this important new text, Keith Lehrer introduces students to the major traditional and contemporary accounts of knowing. Beginning with the accepted definition of knowledge as justified true belief, Lehrer explores the truth, belief and justification conditions on the way to a thorough examination of foundation theories of knowledge, externalism and naturalized epistemologies, internalism and modern coherence theories as well as recent reliabilist and causal theories. Lehrer gives all views careful examination and concludes that external factors must be (...) matched by appropriate internal ones to yield knowledge. Readers of Professor Lehrer's earlier book _Knowledge_ will want to know that this text adopts the framework of that classic text. But _Theory of Knowledge_ is a completely rewritten and updated version of that book that has been simplified throughout for student use. (shrink)

Contextualist theories of knowledge offer a semantic hypothesis to explain the observed contextual variation in what people say they know, and the difficulty people have resolving skeptical paradoxes. Subject or speaker relative versions make the truth conditions of “S knows that p” depend on the standards of either the knower’s context (Hawthorne and Stanley) or those of the speaker’s context (Cohen and DeRose). Speaker contextualism avoids objections to subject contextualism, but is implausible in light of evidence that “know” does (...) not behave like an indexical. I deepen and extend these criticisms in light of recent defenses by contextualists (including Ludlow). Another difficulty is that whether certain standards are salient or intended does not entail that they are the proper standards. A normative form of contextualism on which the truth of a knowledge claim depends on the proper standards for the context is more promising, but still unsatisfactory whether the view is speaker or subject relative. I defend alternative explanations for the observed linguistic and psychological data: a pragmatic account for some cases and a cognitive account for others. 1. (shrink)

In this important new text, Keith Lehrer introduces students to the major traditional and contemporary accounts of knowing. Beginning with the accepted definition of knowledge as justified true belief, Lehrer explores the truth, belief and justification conditions on the way to a thorough examination of foundation theories of knowledge, externalism and naturalized epistemologies, internalism and modern coherence theories as well as recent reliabilist and causal theories. Lehrer gives all views careful examination and concludes that external factors must be (...) matched by appropriate internal ones to yield knowledge. Readers of Professor Lehrer's earlier book _Knowledge_ will want to know that this text adopts the framework of that classic text. But _Theory of Knowledge_ is a completely rewritten and updated version of that book that has been simplified throughout for student use. (shrink)

First published in 1984 as part of The Collected Papers of Bertrand Russell, Theory of Knowledge represents an important addition to our knowledge of Russell's thought. In this work Russell attempts to flesh out the sketch implicit in The Problems of Philosophy. It was conceived by Russell as his next major project after Principia Mathematica and was intended to provide the epistemological foundations for his work. Russell's subsequent difficulties in presenting his theory of knowledge, brought (...) on by what he considered to be devastating criticisms of Wittgenstein, led to both his abandonment of this work and to a major transformation in his thought. Theory of Knowledge, now available for the first time in paperback, gives us a picture of one of the great minds of the twentieth century at work. It is possible to see the unsolved problems left without disguise or evasion. This second edition has retained the full scholarly introduction. The photographs of the manuscript, appendices, and notes on textual matters have been eliminated to provide a concise and accessible guide to understanding both Russell's own thought and his relationship with Wittgenstein. (shrink)

I intend to take into account Meinong's theory of objects from a point of view allowed by the author himself, when he agrees that the proper "place" for such a doctrine is the theory of knowledge. According to this suggestion, I think it convenient to explain the doctrine at issue in the light of the definition of knowing as a "double" act, in which the object known is "in front o f the knowing act itself as something (...) comparatively autonomous. From this point of view a comparison with Husserl's "pure logic" - as Meinong again suggests - as well as a valuation of the part played by our philosopher in their common Opposition to psychologism seem to be of interest.Pure logic seems to answer in the most adequate way the demands that induce Meinong to elaborate a theory of pure objects: such objects are taken into consideration as to their positivity and possibility founded on equally pure operations of a subject. At the same time pure logic provides us with a clue to the ambiguity of Außersein: as a matter of fact, Meinong, freeing himself from the prejudice in favor of what is actual, remains involved in what I would call a prejudice "in favor of what has being"; he thinks it necessary to resort to an assumption, that is to a simulation of being in order to explain our thinking of a non-being object. Furthermore according to him an assumpion is in general demanded in order to think of an object as to his so-being, that is of the outside-being object.There are two orders of questions: the first one regards the "formal" generality of the fundamental gnosiological problems, leaving out of consideration every "matter" of knowledge, the second refers to the gnosiological-phenomenological foundation of the concepts and of the laws of pure logic. They are absolutely inseparable, and yet strictly distinct. The first order should be the right place for the Außersein of pure objects. (shrink)

I intend to take into account Meinong's theory of objects from a point of view allowed by the author himself, when he agrees that the proper "place" for such a doctrine is the theory of knowledge. According to this suggestion, I think it convenient to explain the doctrine at issue in the light of the definition of knowing as a "double" act, in which the object known is "in front o f the knowing act itself as something (...) comparatively autonomous. From this point of view a comparison with Husserl's "pure logic" - as Meinong again suggests - as well as a valuation of the part played by our philosopher in their common Opposition to psychologism seem to be of interest.Pure logic seems to answer in the most adequate way the demands that induce Meinong to elaborate a theory of pure objects: such objects are taken into consideration as to their positivity and possibility founded on equally pure operations of a subject. At the same time pure logic provides us with a clue to the ambiguity of Außersein: as a matter of fact, Meinong, freeing himself from the prejudice in favor of what is actual, remains involved in what I would call a prejudice "in favor of what has being"; he thinks it necessary to resort to an assumption, that is to a simulation of being in order to explain our thinking of a non-being object. Furthermore according to him an assumpion is in general demanded in order to think of an object as to his so-being, that is of the outside-being object.There are two orders of questions: the first one regards the "formal" generality of the fundamental gnosiological problems, leaving out of consideration every "matter" of knowledge, the second refers to the gnosiological-phenomenological foundation of the concepts and of the laws of pure logic. They are absolutely inseparable, and yet strictly distinct. The first order should be the right place for the Außersein of pure objects. (shrink)

I intend to take into account Meinong's theory of objects from a point of view allowed by the author himself, when he agrees that the proper "place" for such a doctrine is the theory of knowledge. According to this suggestion, I think it convenient to explain the doctrine at issue in the light of the definition of knowing as a "double" act, in which the object known is "in front o f the knowing act itself as something (...) comparatively autonomous. From this point of view a comparison with Husserl's "pure logic" - as Meinong again suggests - as well as a valuation of the part played by our philosopher in their common Opposition to psychologism seem to be of interest.Pure logic seems to answer in the most adequate way the demands that induce Meinong to elaborate a theory of pure objects: such objects are taken into consideration as to their positivity and possibility founded on equally pure operations of a subject. At the same time pure logic provides us with a clue to the ambiguity of Außersein: as a matter of fact, Meinong, freeing himself from the prejudice in favor of what is actual, remains involved in what I would call a prejudice "in favor of what has being"; he thinks it necessary to resort to an assumption, that is to a simulation of being in order to explain our thinking of a non-being object. Furthermore according to him an assumpion is in general demanded in order to think of an object as to his so-being, that is of the outside-being object.There are two orders of questions: the first one regards the "formal" generality of the fundamental gnosiological problems, leaving out of consideration every "matter" of knowledge, the second refers to the gnosiological-phenomenological foundation of the concepts and of the laws of pure logic. They are absolutely inseparable, and yet strictly distinct. The first order should be the right place for the Außersein of pure objects. (shrink)

First published in 1984 as part of The Collected Papers of Bertrand Russell , Theory of Knowledge represents an important addition to our knowledge of Russell's thought. In this work Russell attempts to flesh out the sketch implicit in The Problems of Philosophy . It was conceived by Russell as his next major project after Principia Mathematica and was intended to provide the epistemological foundations for his work. Russell's subsequent difficulties in presenting his theory of (...) class='Hi'>knowledge, brought on by what he considered to be devastating criticisms of Wittgenstein, led to both his abandonment of this work and to a major transformation in his thought. Theory of Knowledge , now available for the first time in paperback, gives us a picture of one of the great minds of the twentieth century at work. It is possible to see the unsolved problems left without disguise or evasion. This second edition has retained the full scholarly introduction. The photographs of the manuscript, appendices, and notes on textual matters have been eliminated to provide a concise and accessible guide to understanding both Russell's own thought and his relationship with Wittgenstein. (shrink)

_Theory of Knowledge_ gives us a picture of one of the great minds of the twentieth century at work. It is possible to see the unsolved problems left without disguise or evasion. Historically, it is invaluable to our understanding of both Russell's own thought and his relationship with Wittgenstein.

_Theory of Knowledge_ gives us a picture of one of the great minds of the twentieth century at work. It is possible to see the unsolved problems left without disguise or evasion. Historically, it is invaluable to our understanding of both Russell's own thought and his relationship with Wittgenstein.

_Theory of Knowledge_ gives us a picture of one of the great minds of the twentieth century at work. It is possible to see the unsolved problems left without disguise or evasion. Historically, it is invaluable to our understanding of both Russell's own thought and his relationship with Wittgenstein.

For millennia, knowledge has eluded a precise definition. The industrialization of knowledge (IoK) and the associated proliferation of the so-called knowledge communities in the last few decades caused this state of affairs to deteriorate, namely by creating a trio composed of data, knowledge, and information (DIK) that is not unlike the aporia of the trinity in philosophy. This calls for a general theory of knowledge (ToK) that can work as a foundation for a science (...) of knowledge (SoK) and additionally distinguishes knowledge from both data and information. In this paper, I attempt to sketch this generality via the establishing of both knowledge structures and knowledge systems that can then be adopted/adapted by the diverse communities for the respective knowledge technologies and practices. This is achieved by means of a formal–indeed, mathematical–approach to epistemological matters a.k.a. formal epistemology. The corresponding application focus is on knowledge systems implementable as computer programs. (shrink)

The connection of value-experience with activity has led to the widespread modern tendency to interpret value in terms of interest. To value a thing is certainly to take an interest in it, and there can be no doubt that the value any object has for us tends to vary with the interest we take in it. The suggestion readily arises, therefore, that the value of any object simply is the interest we take in it. The difficulty with views of this (...) type is that interest is a distinctly subjective category while value is persistently spoken of as if it were somehow objective. Indeed, the term “value” would lose the most essential element of its meaning if it could not be applied to objects of common knowledge in such a way that two people could significantly discuss the question as to whether the object A is not more valuable than the object B and each, on the basis of his own interest and experience, defend a different view. I do not think the subjectivity of value can be as easily disposed of as does Laird1 in discussing the argument, “Beauty is not in the aurora. Therefore it is in the beholder's mind.” This, he says, leads to the absurdity, “Therefore the beholder's mind is beautiful.” The apparent absurdity is due to the ambiguity of the term “beautiful.” It is applied either to an experience or to the object of that experience. (shrink)

Developed in collaboration with the International Baccalaureate Organization, Oxford's Course Companions provide extra support for students taking IB Diploma Programme courses. They present a whole-course approach with a wide range of resources, and encourage a deep understanding of each subject by making connections to wider issues and providing opportunites for critical thinking. This companion stimulates students to think about learning and knowledge from their own and from others' perspectives in a way that crosses disciplines and cultures. It encourages reflection, (...) discussion, critical thinking, and awareness or the ways in which knowledge is constructed, and will students to recognize the implications of knowledge for issues of global concern. Places students at the center of the course, with lively material providing opportunities for questioning, discussion, and interaction Invites students to add their own voices to those in the book, which include students, teachers, and professionals in various areas of knowledge Encourages students to frame their own perspectives with international awareness and recognition of the impact of knowledge on the world Contains guidance for current assessment, with support for the Theory of Knowledge essay and class presentation Written by experienced teachers, authors, and examiners, including recent deputy and chief examiners of Theory of Knowledge. (shrink)

A comprehensive introduction to the theory of knowledge, this work explores what it is to be a rational, sentient human being.

Two key research issues in the field of causal learning are how people acquire causal knowledge when observing data that are presented sequentially, and the level of abstraction at which learning takes place. Does sequential causal learning solely involve the acquisition of specific cause-effect links, or do learners also acquire knowledge about abstract causal constraints? Recent empirical studies have revealed that experience with one set of causal cues can dramatically alter subsequent learning and performance with entirely different cues, (...) suggesting that learning involves abstract transfer, and such transfer effects involve sequential presentation of distinct sets of causal cues. It has been demonstrated that pre-training can modulate classic causal learning phenomena such as forward and backward blocking. To account for these effects, we propose a Bayesian theory of sequential causal learning. The theory assumes that humans are able to consider and use several alternative causal generative models, each instantiating a different causal integration rule. Model selection is used to decide which integration rule to use in a given learning environment in order to infer causal knowledge from sequential data. Detailed computer simulations demonstrate that humans rely on the abstract characteristics of outcome variables to select a causal integration rule, which in turn alters causal learning in a variety of blocking and overshadowing paradigms. When the nature of the outcome variable is ambiguous, humans select the model that yields the best fit with the recent environment, and then apply it to subsequent learning tasks. Based on sequential patterns of cue-outcome co-occurrence, the theory can account for a range of phenomena in sequential causal learning, including various blocking effects, primacy effects in some experimental conditions, and apparently abstract transfer of causal knowledge. (shrink)

THE DEVELOPMENT OF SOVIET THEORY OF KNOWLEDGE AND ITS MAIN REPRESENTATIVES By definition the philosophical treatment of knowledge is an integral part of the ...

In his book Knowledge and Practical Interests Jason Stanley offers an argument for the conclusion that it is quite unlikely that an ambiguity theory of ‘knows’ can be “linguistically grounded”. His argument rests on two important assumptions: that linguistic grounding of ambiguity requires evidence of the purported different senses of a word being represented by different words in other languages and that such evidence is lacking in the case of ‘knows’. In this paper, I challenge the (...) conclusion that there isn’t a linguistic grounding for an ambiguity theory of ‘knows’ by making cases against both of Stanley’s major assumptions. I will do this by making a case for a prime facie linguistic grounding for a polysemy theory of ‘knows’ without appealing to word use in other languages. Given that a polysemy theory of ‘knows’ is a type of ambiguity theory of ‘knows’, if I succeed in linguistically grounding a polysemy theory of ‘knows’, then I have shown that at least one type of ambiguity theory of ‘knows’ can be linguistically grounded. (shrink)

Origins of language. It is asserted that the work reveals an issue crucial to his philosophy, namely his ambiguous response to language. Plato's most basic assertion is that words are mere imitations of reality and cannot be trusted to be an accurate mode of transmitting knowledge. Plato refuses to take a systematic position towards language by mingling the divine with the human and the conventional with the natural. The easily proven ambiguity of plato's theory of language is (...) shown to be the basis of many of the problems in his metaphysics, epistemology, and aesthetics. (shrink)

This book aims to synthesize different directions in knowledge studies into a unified theory of knowledge and knowledge processes. It explicates important relations between knowledge and information. It provides the readers with understanding of the essence and structure of knowledge, explicating operations and process that are based on knowledge and vital for society. The book also highlights how the theory of knowledge paves the way for more advanced design and utilization of (...) computers and networks. (shrink)

Sophocles’ Oedipus the King is an extended meditation on the limits of human intelligence, or more precisely, on how a man renowned for the power of his intellect could fail to know the most important truths. One could argue, however, that Sophocles intended for his audiences to take away a second, narrower lesson: namely that divinely inspired seers such as Tiresias have a surer claim on truth than do those who, like Oedipus, seek to gain knowledge through their own (...) efforts. Thus, the Oedipus can be seen as a defense of prophecy and a reaction against the complex of scientific and philosophical ideas known as “the 5th-century Enlightenment.” I offer some support for this reading of the Oedipus. I also argue that part of the cultural background of the Oedipus consisted of ideas about knowledge introduced into Greek thought by the outspoken critic of Greek popular religion, Xenophanes of Colophon. (shrink)

In this paper I explore the ambiguity that arises between two readings of the counterfactual construction, then–d and thel–p, analyzed in my bookA Theory of Counterfactuals. I then extend the analysis I offered there to counterfactuals with true antecedents, and offer a more precise formulation of the conception of temporal divergence points used in thel–p interpretation. Finally, I discuss some ramifications of these issues for counterfactual analyses of knowledge.

As teorias epistemológicas do rastreamento sustentam que o conhecimento é uma relação real entre o agente cognitivo e seu ambiente. Os estados cognitivos de um agente epistêmico fazem o rastreamento da verdade das proposições que são objeto de conhecimento ao embasarem a crença em indicadores confiáveis da verdade (evidência, razões, ou métodos de formação de crença). A novidade nessa abordagem é que se dá pouca ênfase no tipo de justificação epistêmica voltada ao fornecimento de procedimentos de decisão doxástica ou regras (...) de responsabilidade epistêmica. Este artigo oferece um pouco da história das teorias de rastreamento e, então, defende-as contra muitas objeções que se pretendem (equivocadamente) refutadoras dessas teorias. PALAVRAS – CHAVE – Teorias de rastreamento. Nozick. Dretske. Conhecimento. ABSTRACT Tracking theories of knowledge maintain that knowledge is a real relation between cognitive agent and environment. Cognitive states of a knower track the truth of known propositions by basing belief on reliable indicators of truth (evidence, reasons, or belief forming methods). The novelty of this approach is that it places little emphasis on epistemic justification of a kind that aims at guiding epistemic agents by giving doxastic decision procedures or rules of epistemic responsibility. This paper gives some of the history of tracking theories, and then defends them against many of the objections most often judged (mistakenly) to refute tracking theories. KEY WORDS – Tracking theories. Nozick. Dretske. Knowledge. (shrink)

The book attempts, in as comprehensive a way as possible, to make clear the central issues for the theory of knowledge, so as to provide a framework for that subject and also to indicate something of the way in which, as the author believes, the issues should be faced.