jessica brown Anti-Individualism and Knowledge A n Contemporary philosophy of mind is dominated “Jessica Brown, one of the leading contributors t by anti-individualism, which holds that a subject’s to the debates regarding anti-individualism’s i- I thoughts are partly individuated by aspects of epistemological implications, has produced a book n her environment. Despite its dominance, anti- that is both systematic and nuanced in its account d individualism is subject to a daunting array of of these implications. Her robust defense of iv epistemological objections: that it is incompatible anti-individualism will certainly be at the heart of id with the privileged access each subject has to these debates in the years to come.” u her thoughts; that it undermines rationality; and —Sanford C. Goldberg, University of Kentucky a l that it seems to provide a new route to a priori i s knowledge of the world, which, arguably, would be “Jessica Brown’s book will be a milestone in the m absurd. In this rigorous and persuasive study, understanding of anti-individualism. Clearly the Jessica Brown defends anti-individualism from outcome of considerable reflection, it makes a a n these epistemological objections. In doing so, very strong case for thinking that although the d she discusses the relation of discrimination and epistemological implications of this idea may be K reliability, the importance of discrimination for radical, they do not count against its truth. It sets n thought and knowledge, illusions of thought, a clear agenda for the next stage of the debate.” o and the compatibility of Fregean sense and anti- —Paul Snowdon, Department of Philosophy, w individualism. The discussion has important University College London l e consequences for key epistemological issues such d as skepticism, closure, transmission, and the “In this important book, Jessica Brown argues that g nature of knowledge and warrant. anti-individualism does not, after all, have the e epistemological consequences that many critics Jessica Brown is Reader in Philosophy in the have thought so damaging. Along with defense b Department of Philosophy at the University of of this main claim, there is a wealth of argument r Bristol. and insight about reliability and discrimination o in theories of knowledge, the possibility of w Contemporary Philosophical Monographs illusions of thought, the appeal to Fregean sense, n transmission of epistemic warrant, and more. A Bradford Book It will be rewarding reading for anyone working in epistemology or philosophy of mind, and required readingfor anyone working at the mind/epistemology interface.” 0-262-52421-X —Martin Davies, Australian National University Anti-Individualism and Knowledge The MIT Press Massachusetts Institute of Technology jessica brown Cambridge, Massachusetts 02142 ,!7IA2G2-fcecbg!:t;K;k;K;k http://mitpress.mit.edu Cover photograph:Alan Brown Anti-Individualism and Knowledge Contemporary Philosophical Monographs Peter Ludlow, editor 1. A Slim Book about Narrow Content Gabriel M. A. Segal (2000) 2. Complex DemonstrativesJeffrey C. King (2001) 3. Words without MeaningChristopher Gauker (2003) 4. Anti-Individualism and KnowledgeJessica Brown (2004) Anti-Individualism and Knowledge Jessica Brown ABradford Book The MIT Press Cambridge, Massachusetts London, England © 2004 Massachusetts Institute of Technology All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, record- ing, or information storage and retrieval) without permission in writing from the publisher. This book was set in Palatino by SNPBest-set Typesetter Ltd., Hong Kong, and was printed and bound in the United States of America. Library of Congress Cataloging-in-Publication Data Brown, Jessica. Anti-individualism and knowledge / Jessica Brown. p. cm.—(Contemporary philosophical monographs ; 4) “ABradford book.” Includes bibliographical references (p. ) and index. ISBN 0-262-02558-2 (hc. : alk. paper)—ISBN 0-262-52421-X (pbk. : alk. paper) 1. Knowledge, Theory of. 2. Individualism. I. Title. II. Series. BD161.B765 2004 121¢.3—dc21 2003054115 10 9 8 7 6 5 4 3 2 1 Contents Preface ix 1 Anti-Individualism 1 1 Content and the Environment 2 2 Natural Kind Anti-Individualism 9 3 Singular Anti-Individualism 13 4 Illusions of Thought 15 5 Social Anti-Individualism 17 6 Fregean and Non-Fregean Anti-Individualism 20 7 APriori and Empirical 22 8 Outline of the Book 25 2 Knowledge and Discrimination 33 1 Privileged Access 33 2 The Discrimination Argument 37 3 Discrimination and Reliability 45 4 Knowledge and Reliability 59 5 Other Compatibilist Responses—Falvey and Owens, and McLaughlin and Tye 64 6 Conclusion 71 3 Thought and Discriminative Abilities—Evans 75 1 Introduction 75 vi Contents 2 Evans’s Account of Singular Thought 77 3 Evans and the Discrimination Argument 83 4 Perceptual Demonstrative Thoughts 86 5 Possible Compatibilist Responses 90 6 Recognition-based Thoughts 96 7 Comparison of Evans’s Account and the Modified Account 106 8 Conclusion 110 4 The Illusion Argument 113 1 Introduction 113 2 Relevance and Reliability 117 3 Two Notions of Reliability 119 4 Local or Global Reliability? 124 5 The Illusion Argument Reconsidered 129 6 Conclusion of the Illusion Argument 133 7 The Illusion and Discrimination Arguments 135 8 Social Anti-Individualism and Twin Situations 138 9 Natural Kind Anti-Individualism and Twin Situations 142 10 Singular Anti-Individualism and Twin Situations 145 11 No-Reference Situations 147 12 The Relevance Strategy and Alternatives 152 13 Conclusion of Chapters 2 through 4 155 5 Anti-Individualism and Reasoning 157 1 Introduction 157 2 Transparency of Sameness of Content 161 3 Transparency of Difference of Content 166 4 Slow Switch and Conceptual Change 170 5 Two Concepts and Inference 176 Contents vii 6 Rationality and APriority 182 7 Conclusion 191 6 Anti-Individualism and Fregean Sense 193 1 Introduction 193 2 The Contrast between Fregean and Non-Fregean Anti-Individualism 197 3 Fregean Anti-Individualism and Transparency of Sameness 204 4 Fregean Anti-Individualism and Transparency of Difference 210 5 Fregean Anti-Individualism 225 7 The Reductio Argument: Transmission of Warrant 233 1 Introduction 233 2 Closure and Transmission 239 3 Wright and Conditional Warrant 244 4 Begging the Question 258 5 Warrant and Ruling Out Alternatives 259 6 Conclusion 269 8 The Reductio Argument: Entailments between Thought and the World 271 1 Introduction 271 2 Natural Kind Anti-Individualism 274 3 Singular Anti-Individualism 289 4 Social Anti-Individualism 294 5 Combined Views 300 6 Conclusion 301 Appendix to Chapter 8: Comparison with Davies and Wright 303 viii Contents 9 Conclusion 309 Notes 313 References 327 Index 335 Preface This book examines the epistemological consequences of a view that dominates contemporary philosophy of mind— anti-individualism. According to this view, a subject’s thought contents are partly individuated by her environ- ment. By contrast, individualists deny this and argue that a subject’s thought contents are wholly individuated by her “internal” states, such as her brain states. Many have taken anti-individualism to have radical consequences for our knowledge of our minds, our ability to reason, and our knowledge of the world. In this book, I investigate whether anti-individualism does have such radical consequences. The discussion weaves together central topics in the philos- ophy of mind, such as rationality, psychological explanation and the nature of thought, with general issues in episte- mology such as skepticism and the nature of knowledge and warrant. If, as anti-individualism suggests, what a subject thinks depends partly on her environment, it may seem that a subject can know what she thinks only by investigating the nature of her environment. But this seems deeply counter- intuitive. Asubject may use empirical evidence in forming a belief, but, once the belief is formed, it seems she can know
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