Among several possibilities for what reality could be like in view of the empirical facts of quantum mechanics, one is provided by theories of spontaneous wave function collapse, the best known of which is the Ghirardi–Rimini–Weber theory. We show mathematically that in GRW theory there are limitations to knowledge, that is, inhabitants of a GRW universe cannot find out all the facts true of their universe. As a specific example, they cannot accurately measure the number of collapses that a given (...) physical system undergoes during a given time interval; in fact, they cannot reliably measure whether one or zero collapses occur. Put differently, in a GRW universe certain meaningful, factual questions are empirically undecidable. We discuss several types of limitations to knowledge and compare them with those in other versions of quantum mechanics, such as Bohmian mechanics. Most of our results also apply to observer-induced collapses as in orthodox quantum mechanics. 1 Introduction1.1 Known examples of limitations to knowledge1.2 Remarks2 Brief Review of GRW Theories2.1 The GRW process2.2 GRWm2.3 GRWf3 First Examples of Limitations to Knowledge in GRW Theories4 Measurements of Flashes in GRWf, or of Collapses in GRWm4.1 An example in which ψ is known4.2 Other choices of ψ4.3 Experiments beginning before t24.4 If ψ is random4.5 Optimal way of distinguishing two density matrices4.6 If ψ is unknown5 Measurements of m in GRWmAppendix. (shrink)

This Dynamic World is visually beautiful and full of useful knowledge. The book makes plain what has been obscure.

A concise chronicle of the remarkable life and career of William Temple, Archbishop of York and later of Canterbury, which attempts to focus more sharply and clearly on Temple the man, viewing him as prelate, thinker, prophet-evangelist, and as the example of a modern Saint.

To find out more information about Rowman & Littlefield titles please visit us at www.rowmanlittlefield.com.

ABNER SHIMONY of the Paradox A PHILOSOPHICAL PUPPET PLAY Dramatis personae: Zeno , Pupil, Lion Scene: The school of Zeno at Elea. Pup. Master! ...

This paper presents an attempt to integrate theories of causal processes—of the kind developed by Wesley Salmon and Phil Dowe—into a theory of causal models using Bayesian networks. We suggest that arcs in causal models must correspond to possible causal processes. Moreover, we suggest that when processes are rendered physically impossible by what occurs on distinct paths, the original model must be restricted by removing the relevant arc. These two techniques suffice to explain cases of late preëmption and other (...) cases that have proved problematic for causal models. (shrink)

Wesley Cooper opposes the traditional view of William Jamesís philosophy which dismissed it as fragmented or merely popular, arguing instead that there is a systematic philosophy to be found in James's writings. His doctrine of pure experience is the binding thread that links his earlier psychological theorizing to his later epistemological, religious, and pragmatic concerns.

1. The Problem. In spite of the vast discussion which has been devoted to the theory of probability, the problem of the short run has received surprisingly little attention. Yet, the whole significance of the theory depends upon a solution of this problem, for without an answer to it we cannot say why it is useful to have knowledge of probabilities or why we should take account of this knowledge in making practical decisions. As far as I know, Charles (...) Peirce was the first to appreciate the importance and difficulty of the question, and his characteristically vivid formulation serves as an excellent starting point for its consideration. He says:According to what has been said, the idea of probability essentially belongs to a kind of inference which is repeated indefinitely. An individual inference must be either true or false and can show no effect of probability; and therefore, in reference to a single case considered in itself, probability can have no meaning. Yet if a man had to choose between drawing a card from a pack containing twenty-five red cards and a black one, or from a pack containing twenty-five black cards and a red one, and that of a red one were destined to transport him to eternal felicity, and that of a black one to consign him to everlasting woe, it would be folly to deny that he ought to prefer the pack containing the larger proportion of red cards, although from the nature of the risk, it cannot be repeated. [Collected Papers, 2.652]. (shrink)

This article offers a pragmatist conception of multiplicitous subjectivity that captures the best features of Richard Rorty’s private ironist and John Dewey’s social self while rejecting anti-democratic implications I identify in each. On the one hand, Rorty rightly sees that having a plural self is crucial for self-creation but fails to see the connection between self-creation and social justice. On the other hand, Dewey rightly sees the interrelationship between personal and social growth but fails to appreciate the danger implicit in (...) his emphasis on integration of differences (both within the self and in the community). To see how we can achieve a compelling synthesis of these two views, I turn to Gloria Anzaldúa’s theory of “mestiza consciousness,” which points us toward a model of democratic citizenship that brings together Rorty’s tolerance for multiplicity and ambivalence with Dewey’s relational understanding of personal development and social progress. (shrink)

Pragmatism is first and foremost an intellectual self-image. It is a unique way of understanding the mental abilities that distinguish we humans from other living things on earth. The pragmatist description of our mind and its relationship to the rest of the world is a relatively new one. It has its roots in the late nineteenth and early twentieth century work of Charles Sanders Peirce, William James, and John Dewey. These philosophers, influenced by Darwinian biology among other things, redefined (...) the human mind. (shrink)

The purpose of this text is to draw attention to eight forgotten heroes: William C. Bagley, Charles DeGarmo, David Felmley, William Torrey Harris, Isaac L. Kandel, Charles McMurry, William C. Ruediger, and Edward Austin Sheldon. They have been marginalized from our profession, and drawing upon their legacy is the best hope for restoring the profession of teaching today. This work also includes a chapter at the end of the book entitled "John Dewey's Forgotten Essays." The audience for this (...) book includes: 1) classroom teachers, 2) school administrators, 3) teacher educators, 4) deans and other university administrators, 5) college and university presidents, 6) legislators, 7) historians of education, 8) curriculum specialists, 9) specialists in teacher training, and 10) the general public. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Health Care Ethics: A Comprehensive Christian Resource by James R. ThobabenPaul D. SimmonsHealth Care Ethics: A Comprehensive Christian Resource by James R. Thobaben Downers Grove, IL: Intervarsity Press, 2009. 429pp. $28.00In recent years, a stir has been created by the vocal and aggressive involvement of evangelicals in such issues as abortion, homosexuality, and end-of-life decisions. James Thobaben, the dean of Asbury Seminary, provides what he calls a [End (...) Page 203] “comprehensive resource” for evangelicals, and promises better understandings of their perspectives and commitments for those who are baffled or frustrated by the actions and claims of those on the religious right.Thobaben casts a wide net when defining those he includes as “evangelicals”—Southern Baptists, members of Campus Crusade, Pentecostals, the Holiness movement, neoevangelicals, charismatics, and Anabaptists. These diverse groups are evangelicals because of their “consistency on moral choices,” doctrinal orientation, and styles of social advocacy (24). Although they differ in a number of ways, they all share having been influenced in some way by John and Charles Wesley, Jonathan Edwards, and the Reformation. All stress conversion in that “one must say yes to the divine Jesus Christ” and become identified with the community of faithful believers (57). And in recent decades, they have become a potent political force with regard to the issues of abortion and homosexuality.Thobaben covers a wide range of topics in this book: from a general discussion of theodicy and healing to bioethics, disability, sickness, family and congregational care, professional truthfulness, managing care, end-of-life decisions, assisted reproduction, organ donation, and death. Yet, although he claims to provide a “comprehensive resource” on evangelical Christian health care ethics, he fails to provide a thorough examination of his subject matter. For example, Thobaben pays little attention to the historic beginnings of the religious right. One misses any mention of political action groups or the coalitions formed with or by conservative Christian groups to pursue social reforms, or of why such disparate groups have cooperated for political or social goals under the same umbrella. He focuses solely on identifying and articulating the consensus among those who embrace certain moral values on the current scene. Thobaben’s uncritical approach to his subject matter leaves the impression that this book is essentially an apology for evangelical, right-wing Christian social thought. One searches in vain for any critical discussion of the beliefs and values he presents or any thoughtful engagement with those who might view the stances he presents as an assault against women’s rights or an attack on the rights of gays, lesbians, and transsexuals.Moreover, in a book like this, one would have expected a more careful assessment of biblical passages and historical precedents. Thobaben does not provide much rationale for his method for moving from the Bible to current social issues. For example, no prohibition against abortion is found in the Bible and the few passages about homosexual practices hardly add up to the fierce opposition to gays found among strident evangelicals. Moreover, Thobaben does not mention that in 1965 laws against contraceptives were declared unconstitutional by the Griswold vs. Connecticut decision, the Supreme Court’s rejection of a ban supported by an evangelical crusade led by Anthony Comstock. [End Page 204]It is interesting to note that Thobaben holds a strongly qualified commitment to religious liberty and only a “thin” version of the social contract basic to the Bill of Rights (37). He argues that in at least some situations “intolerance is not only morally understandable but strongly preferable,” as in the examples of the “abolition of slavery and prolife/antiabortion advocacy” (29) or, in another context—where he distinguishes between tolerance toward those outside the church and intolerance toward those within it—with regard to homosexuality and alcohol intoxication (30).The task of Christian ethics is to enlighten believers and the general citizenry by a careful exposition of the sources of wisdom available to those who want to think and think morally about issues of importance to human flourishing. That task is especially important in an age of demagogic hostility toward unpopular groups. Sadly, this book does not engage such critical questions. It may prove... (shrink)

Books Reviewed in this Article: Transforming Bible Study. By Walter Wink. Pp.175, London, SCM Press, 1981, £3.50. Isaiah 1–39. By R.E. Clements. Pp.xvi. 301, London, Marshall, Morgan and Scott, 1980, £3.95. Isaiah 40–66. By R.N. Whybray. Pp.301, London, Marshall, Morgan and Scott, 1975, Reprinted 1981, £3.95. Die Gestalt Jesu in den synoptischen Evangelien. By Heinrich Kahlefeld. Pp.264, Frankfurt, Verlag Josef Knecht, 1981, no price given. Following Jesus: Discipleship in the Gospel of Mark. By Ernest Best. Pp.283, Sheffield, JSOT Press, 1981, (...) £15.00, £5.95. The Origin of Paul's Gospel. By Seyoon Kim. Pp.xii, 391, Tübingen, J.C.B. Mohr, 1981, 78 DM. An die Römer. By Ernst Käsemann. Pp.xvi, 411, Tübingen, J.C.B. Mohr, 1980, 48 DM. Les Récits de Resurrection des Morts dans le Nouveau Testament. By Gerard Rochais. Pp.xv, 252, Cambridge, Cambridge University Press, 1981, £15.00. Prêtres Anciens, Prétre Nouveau selon le Nouveau Testament. By Albert Vanhoye. Pp.366, Paris Editions du Seuil, 1980, no price given. Woman in the World of Jesus. By Evelyn and Frank Stagg. Pp.292, Edinburgh, The St Andrew Press, 1981, no price given. Jesus, Man and the Church. By Karl Rahner. Pp.260, London, Darton Longman & Todd, 1981, £14.50. Jesus Lord and Savior: A Theopathic Christology and Soteriology. By William M. Thompson. Pp.ix, 287, Leominster, Fowler Wright, 1981, £7.45. God and World in Schleiermacher's ‘Dialektik’ and ‘Glaubenslehre’. Criticism and the Methodology of Dogmatics. By John E. Thiel. Pp.xiv, 239, Bern, Frankfurt and Las Vegas, Peter Lang, 1981, SF 49.50. Ministry: A Case for Change. By Edward Schillebeeckx. Pp.ix, 165, London, SCM Press, 1981, £4.95. The Sacraments: Readings in Contemporary Sacramental Theology. Edited by Michael J. Taylor. Pp.274, New York, Alba House, 1981, $7.95. Believing in the Church: The Corporate Nature of Faith. A Report by the Doctrine Commission of the Church of England. Pp.ix, 310, London, SPCK, 1981, £8.50. Confessing the Faith in the Church of England Today. By R.T. Beckwith. Pp.36, Oxford, La timer House, 1981, £1.00. A Kind of Noah's Ark? The Anglican Commitment to Comprehensiveness. By J.I. Packer. Pp.39, Oxford, Latimer House, 1981, £1.00. Reasonable Belief: A Survey of the Christian Faith. By Anthony Hanson and Richard Hanson. Pp.xii, 283, Oxford University Press, 1981, £8.50. Doctrine in the Church of England. The 1938 Report with a new introduction by G.W.H. Lampe. Pp.lx, 242, London, SPCK, 1982, £8.50. The Divine Right of the Papacy in Recent Ecumenical Theology. By J. Michael Miller. Pp.xvi, 322, Rome, Università Gregoriana Editrice, 1980, 18,000 Lire. Der heilige Geist in der Theologie von Heribert Mühlen: Versucheiner Darstellung und Würdigung. By John B. Banawiratma. Pp.ix, 310, Frankfurt and Bern: Peter D. Lang, 1981, SFr. 60.00. Standing Before God: Studies on Prayer in Scriptures and Tradition with Essays in Honor of John M. Oesterreicher. Edited by Asher Frinkel and Lawrence Frizzell. Pp.410, New York, Ktav Publishing House, 1981, $29.50. Judaism and Healing. By J. David Bleich. Pp.xiii, 199, New York, Ktav, 1981, $15.00. The Diversity of Moral Thinking. By Neil Cooper. Pp.x, 303, Oxford, Clarendon Press: Oxford University Press, 1981, £15.00. L'Homme: Sujet ou Objet? By Jacques Croteau. Pp.260, Montreal, Bellarmin: Tournai, Desclée et Cie, 1981, $15.00. The Texture of Knowledge: An Essay on Religion and Science. By James W. Jones. Pp.97, Washington, University Press of America, 1981, no price given. Cosmos and Creator. By Stanley L. Jaki. Pp.xii, 168, Edinburgh, Scottish Academic Press, 1980, £6.75. Dante, Philomythes and Philosopher: Man in the Cosmos. By Patrick Boyde. Pp.vii, 408, Cambridge, Cambridge University Press, 1981, £30.00. Dissidence et Philosophie au Mayen Âge. By E.L. Fortin. Pp.201, Montreal, Bellarmin, 1981, $12.00. The Philosophy of John Norris of Bemerton. By Richard Acworth. Pp.x, 388, Hildesheim, Georg Olms, 1979, 74 DM. Philosophy and Ideology in Hume's Political Thought. By David Miller. Pp.xii, 218, Oxford, Clarendon Press, 1981, £15.00. Hegelianism. By John Edward Toews. Pp.x, 450, Cambridge, Cambridge University Press, 1980, £25.00. One Hundred Years of Thomism. Edited by V.B. Brezik. Pp.210, Houston, Centre for Thomistic Studies, 1981, no price given. Gramsci's Political Thought: Hegemony, Consciousness and the Revolutionary Process. By J.V. Femia. Pp.xiii, 303, Oxford, Clarendon Press, 1981, £17.50. Greek and Roman Slavery. By Thomas Wiedemann. Pp.xvi, 284, London, Croom Helm, 1981, £10.95, £5.95. Prophecy and Millenarianism. Essays in Honour of Marjorie Reeves. Edited by Ann Williams. Pp.x, 355, London, Longman, 1980, £25.00. Of Prelates and Princes: A Study of the Economic and Social Position of the Tudor Episcopate. By Felicity Heal. Pp.xv, 353, Cambridge, Cambridge University Press, 1980, £17.50. Radical Religious Movements in Early Modern Europe. By Michael Mullett. Pp.xxiv, 193, London, George Allen & Unwin, 1980, £10.50. The Jesuits. By J.C.H. Aveling. Pp.390, London, Blond and Briggs, 1981, £16.95. The Beginnings of Ideology. By Donald R. Kelley. Pp.xv, 351, Cambridge, Cambridge University Press, 1981, £24.00. Utopia and the Ideal Society: A Study of English Utopian Writing 1516–1700. By J.C. Davis. Pp.x, 427, Cambridge, Cambridge University Press, 1981, £25.00. Eastern Politics of the Vatican 1917–1979. By Hansjakob Stehle. Pp.466, Athens, Ohio University Press, 1981, £16.20, £8.10. Structuralism or Criticism? By Geoffrey Strickland. Pp.viii, 209, Cambridge, Cambridge University Press, 1981, £17.50. The Call of God: The Theme of Vocation in the Poetry of Donne and Herbert. By Robert B. Shaw. Pp.xiii, 123, Cambridge, Mass., Cowley Publications, 1981, $5.00. John and Charles Wesley: Selected Prayers, Hymns, Journal Notes, Sermons, Letters and Treatises. Edited by Frank Whaling. Pp.xx, 412, London, SPCK, 1981, £8.95. The Trickster in West Africa: A Study of Mythic Irony and Sacred Delight. By Robert D. Pelton. Pp.312, Berkeley, University of California Press, 1980, £15.00. (shrink)

The philosophical theory of scientific explanation proposed here involves a radically new treatment of causality that accords with the pervasively statistical character of contemporary science. Wesley C. Salmon describes three fundamental conceptions of scientific explanation--the epistemic, modal, and ontic. He argues that the prevailing view is untenable and that the modal conception is scientifically out-dated. Significantly revising aspects of his earlier work, he defends a causal/mechanical theory that is a version of the ontic conception. Professor Salmon's theory furnishes a (...) robust argument for scientific realism akin to the argument that convinced twentieth-century physical scientists of the existence of atoms and molecules. To do justice to such notions as irreducibly statistical laws and statistical explanation, he offers a novel account of physical randomness. The transition from the "reviewed view" of scientific explanation to the causal/mechanical model requires fundamental rethinking of basic explanatory concepts. (shrink)

Through his S–R model of statistical relevance, Wesley Salmon offers a solution to the scientific explanation of objectively improbable events.

Not since Ernest Nagel’s 1939 monograph on the theory of probability has there been a comprehensive elementary survey of the philosophical problems of probablity and induction. This is an authoritative and up-to-date treatment of the subject, and yet it is relatively brief and nontechnical. Hume’s skeptical arguments regarding the justification of induction are taken as a point of departure, and a variety of traditional and contemporary ways of dealing with this problem are considered. The author then sets forth his own (...) criteria of adequacy for interpretations of probability. Utilizing these criteria he analyzes contemporary theories of probability, as well as the older classical and subjective interpretations. (shrink)

The 1920s and 30s were key decades for the history of American social science. The success of such quantitative disciplines as economics and psychology during World War I forced social scientists to reexamine their methods and practices and to consider recasting their field as a more objective science separated from its historical foundation in social reform. The debate that ensued, fiercely conducted in books, articles, correspondence, and even presidential addresses, made its way into every aspect of social science thought of (...) the period and is the subject of this book. Mark C. Smith first provides a historical overview of the controversy over the nature and future of the social sciences in early twentieth-century America and, then through a series of intellectual biographies, offers an intensive study of the work and lives of major figures who participated in this debate. Using an extensive range of materials, from published sources to manuscript collections, Smith examines "objectivists"--economist Wesley Mitchell and political scientist Charles Merriam--and the more "purposive thinkers"--historian Charles Beard, sociologist Robert Lynd, and political scientist and neo-Freudian Harold Lasswell. He shows how the debate over objectivity and social purpose was central to their professional and personal lives as well as to an understanding of American social science between the two world wars. These biographies bring to vivid life a contentious moment in American intellectual history and reveal its significance in the shaping of social science in this country. (shrink)

According to a prominent claim in recent epistemology, people are less likely to ascribe knowledge to a high stakes subject for whom the practical consequences of error are severe, than to a low stakes subject for whom the practical consequences of error are slight. We offer an opinionated "state of the art" on experimental research about the role of stakes in knowledge judgments. We draw on a first wave of empirical studies--due to Feltz & Zarpentine (2010), May et al (2010), (...) and Buckwalter (2010)--which cast doubt on folk stakes sensitivity, and a second wave of empirical studies--due to Pinillos (2012) and Sripada & Stanley (2012)--said to vindicate it, as well as new studies of our own. We conclude that the balance of evidence to date best supports Folk stakes insensitivity, or that all else equal, stakes do not affect knowledge ascription. (shrink)

We distinguish between two categories of belief—thin belief and thick belief—and provide evidence that they approximate genuinely distinct categories within folk psychology. We use the distinction to make informative predictions about how laypeople view the relationship between knowledge and belief. More specifically, we show that if the distinction is genuine, then we can make sense of otherwise extremely puzzling recent experimental findings on the entailment thesis (i.e. the widely held philosophical thesis that knowledge entails belief). We also suggest that the (...) distinction can be applied to debates in the philosophy of mind and metaethics. (shrink)

But Williams had created a field of historical study, where his white counterparts had not. Single-handedly and without the blessing or approval of the academic community, Williams had called attention to the importance of including Afro-Americans in any acceptable and comprehensive history of the nation long before the historians of various groups of European-Americans or Asian-Americans had begun to advocate a similar treatment for their groups. And if Williams did not impress the white professional historians, he gave heart and encouragement (...) to future Afro-American historians. When the History of the Negro Troops appeared in 1887, nineteen-year-old W. E. B. Du Bois was a college senior at Fisk University and editor-in-chief of the student magazine, The Fisk Herald. In the columns of the Herald Du Bois wrote, "At last we have a historian; not merely a Negro historian, but a man who judged by his merits alone has written a splendid narrative. The Herald congratulates George W. Williams, and the race, which may justly be . . . [proud] of him."1 Many years later, Carter G. Woodson, the founder of the Association for the Study of Negro Life and History and of the Journal of Negro History, described Williams' History of the Negro Troops as "one of the most valuable accounts of the Civil War."2 With words like these from Du Bois and Woodson, on whose shoulders much of the second stage of Afro-American historiography would rest, it is not too much to say that George Washington Williams was responsible for the beginnings of Afro-American historiography. · 1. The Fisk Herald, January 1888, p. 8.· 2. Woodson's appraisal of Williams was found among his papers and made available to me by Dr. Charles H. Wesley when he was executive director of the Association for the Study of Negro Life and History, which had been founded by Woodson in 1915. John Hope Franklin, president-elect of the American Historical Society, has written a biography of George Washington Williams. He is the John Matthews Manly Distinguished Service Professor of History at the University of Chicago and the author of, among other works, From Slavery to Freedom: A History of Negro Americans and A Southern Odyssey: Travelers in the Antebellum North. (shrink)

In recent years, there has been much concern expressed about the under-representation of women in academic philosophy. Our goal in this paper is to call attention to a cluster of phenomena that may be contributing to this gender gap. The findings we review indicate that when women and men with little or no philosophical training are presented with standard philosophical thought experiments, in many cases their intuitions about these cases are significantly different. In section 1 we review some of the (...) data on the under-representation of women in academic philosophy. In section 2 we explain how we use the term 'intuition,' and offer a brief account of how intuitions are invoked in philosophical argument and philosophical theory building. In the third section we set out the evidence for gender differences in philosophical intuition and mention some evidence about gender differences in decisions and behaviors that are (or should be) of considerable interest to philosophers. In the fourth section, our focus changes from facts to hypotheses. In that section we explain how differences in philosophical intuition might be an important part of the explanation for the gender gap in philosophy. The fifth section is a brief conclusion. (shrink)

This paper presents a drastically revised version of the theory of causality, based on analyses of causal processes and causal interactions, advocated in Salmon (1984). Relying heavily on modified versions of proposals by P. Dowe, this article answers penetrating objections by Dowe and P. Kitcher to the earlier theory. It shows how the new theory circumvents a host of difficulties that have been raised in the literature. The result is, I hope, a more satisfactory analysis of physical causality.

This paper discusses several distinct process theories of causality offered in recent years by Phil Dowe and me. It addresses problems concerning the explication of causal process, causal interaction, and causal transmission, whether given in terms of transmission of marks, transmission of invariant or conserved quantities, or mere possession of conserved quantities. Renouncing the mark-transmission and invariant quantity criteria, I accept a conserved quantity theory similar to Dowe's--differing basically with respect to causal transmission. This paper also responds to several fundamental (...) constructive criticisms contained in Christopher Hitchcock's discussion of both the mark-transmission and the conserved quantity theories. (shrink)

Recent theories of epistemic contextualism have challenged traditional invariantist positions in epistemology by claiming that the truth conditions of knowledge attributions fluctuate between conversational contexts. Contextualists often garner support for this view by appealing to folk intuitions regarding ordinary knowledge practices. Proposed is an experiment designed to test the descriptive conditions upon which these types of contextualist defenses rely. In the cases tested, the folk pattern of knowledge attribution runs contrary to what contextualism predicts. While preliminary, these data inspire prima (...) facie skepticism for the contextualist hypothesis regarding folk knowledge claims, as well as challenge certain predictions made by recent theories of subject-sensitive invariantism. It is further argued that such results raise methodological questions concerning the practice of relying on an assumption of intuitions, with respect to ordinary language practices, as evidence for philosophical conclusions regarding knowledge. (shrink)

Approximation involves representing things in ways that might be close to the truth but are nevertheless false. Given the widespread reliance on approximations in science and everyday life, here we ask whether it is conceptually possible for false approximations to qualify as knowledge. According to the factivity account, it is impossible to know false approximations, because knowledge requires truth. According to the representational adequacy account, it is possible to know false approximations, if they are close enough to the truth for (...) present purposes. In this paper, we adopt an experimental methodology to begin testing these two theories. When an agent provides a false and practically inadequate answer, both theories predict that people will deny knowledge. But the theories disagree about an agent who provides a false but practically adequate answer: the factivity hypothesis again predicts knowledge denial, whereas the representational adequacy hypothesis predicts knowledge attribution. Across two experiments, our principal finding was that people tended to attribute knowledge for false but practically adequate answers, which supports the representational adequacy account. We propose an interpretation of existing findings that preserves a conceptual link between knowledge and truth. According to this proposal, truth is not necessary for knowledge, but it is a feature of prototypical knowledge. (shrink)