Much of what we believe we know, we know through the testimony of others. While there has been long-standing evidence that people are sensitive to the characteristics of the sources of testimony, for example in the context of persuasion, researchers have only recently begun to explore the wider implications of source reliability considerations for the nature of our beliefs. Likewise, much remains to be established concerning what factors influence source reliability. In this paper, we examine, both theoretically and empirically, the (...) implications of using message content as a cue to source reliability. We present a set of experiments examining the relationship between source information and message content in people's responses to simple communications. The results show that people spontaneously revise their beliefs in the reliability of the source on the basis of the expectedness of a source's claim and, conversely, adjust message impact by perceived reliability; hence source reliability and message content have a bi-directional relationship. The implications are discussed for a variety of psychological, philosophical and political issues such as belief polarization and dual-route models of persuasion. (shrink)

Reasoning with conditionals is central to everyday life, yet there is long-standing disagreement about the meaning of the conditional. One example is the puzzle of so-called missing-link conditionals such as "if raccoons have no wings, they cannot breathe under water." Their oddity may be taken to show that conditionals require a connection between antecedent ("raccoons have no wings") and consequent ("they cannot breathe under water"), yet most accounts of conditionals attribute the oddity to natural language pragmatics. We present an experimental (...) study disentangling the pragmatic requirement of discourse coherence from a stronger notion of connection: probabilistic relevance. Results indicate that mere discourse coherence is not enough to make conditionals assertable. (shrink)

Conditionals and conditional reasoning have been a long-standing focus of research across a number of disciplines, ranging from psychology through linguistics to philosophy. But almost no work has concerned itself with the question of how hearing or reading a conditional changes our beliefs. Given that we acquire much—perhaps most—of what we believe through the testimony of others, the simple matter of acquiring conditionals via others’ assertion of a conditional seems integral to any full understanding of the conditional and conditional reasoning. (...) In this paper we detail a number of basic intuitions about how beliefs might change in response to a conditional being uttered, and show how these are backed by behavioral data. In the remainder of the paper, we then show how these deceptively simple phenomena pose a fundamental challenge to present theoretical accounts of the conditional and conditional reasoning – a challenge which no account presently fully meets. (shrink)

Double‐minute chromosomes play a critical role in tumor cell genetics where they are frequently associated with the overexpression of oncogene products. They have been observed for many years in light microscopic examinations of metaphase chromosomes from tumor cells, but their origin remains unknown and is the subject of considerable speculation. However, molecular details of their structure and organization can now be described in conjunction with the microscopic examinations, to allow an evaluation of the various models that have been developed to (...) explain the genesis of double‐minutes. The evidence now favors simple models that invoke chromosome breakage and circularization of very large acentric chromosome fragments, permitting unequal segregation of the genes on the fragment during cell division. If there is selection for overexpression of one of the genes on the fragment, daughter cells with more fragments will grow faster than daughter cells with fewer fragments, and over time the population of cells will come to contain many double‐minutes per cell. (shrink)

This, the 21st volume in the Library of Living Philosophers, is more than Sir Alfred Ayer's final word on the philosophical issues that preoccupied him for more than sixty years; the list of contributors is a roll-call of some of the greatest living figures in philosophy, each expertly addressing a key problem arising in Ayer's work. Most of the critical papers are answered directly and in detail by Sir Alfred-he completed his replies to 21 of the 24 papers before his (...) death. Contributors include: A. J. Ayer, Evandro Agazzi, James Campbell, David S. Clarke, Michael Dummett, Elizabeth Eames, John Foster, Dimitri Ginev, Paul Gochet, Martin Hollis, Ted Honderich, Tscha Hung, Peter Kivy, Arne Naess, D. J. O'Connor, Desiree Park, David Pears, Azarya Polikarov, Hilary Putnam, Francisco Miró, Quesada C., A. Anthony Quinton, Emanuele Riverso, Ernest Sosa, T. L. S. Sprigge, Barry Stroud, and David Wiggins. (shrink)

Acknowledgments 1. Culture Is Essential 2. Culture Exists 3. Culture Evolves 4. Culture Is an Adaptation 5. Culture Is Maladaptive 6. Culture and Genes Coevolve 7. Nothing about Culture Makes Sense except in the Light of Evolution.

Metaphysicians should pay attention to quantum mechanics. Why? Not because it provides definitive answers to many metaphysical questions-the theory itself is remarkably silent on the nature of the physical world, and the various interpretations of the theory on offer present conflicting ontological pictures. Rather, quantum mechanics is essential to the metaphysician because it reshapes standard metaphysical debates and opens up unforeseen new metaphysical possibilities. Even if quantum mechanics provides few clear answers, there are good reasons to think that any adequate (...) understanding of the quantum world will result in a radical reshaping of our classical world-view in some way or other. Whatever the world is like at the atomic scale, it is almost certainly not the swarm of particles pushed around by forces that is often presupposed. This book guides readers through the theory of quantum mechanics and its implications for metaphysics in a clear and accessible way. The theory and its various interpretations are presented with a minimum of technicality. The consequences of these interpretations for metaphysical debates concerning realism, indeterminacy, causation, determinism, holism, and individuality are explored in detail, stressing the novel form that the debates take given the empirical facts in the quantum domain. While quantum mechanics may not deliver unconditional pronouncements on these issues, the range of possibilities consistent with our knowledge of the empirical world is relatively small-and each possibility is metaphysically revisionary in some way. This book will appeal to researchers, students, and anybody else interested in how science informs our world-view. (shrink)

Shows that the dialogue in Plato's Phaedo is primarily devoted to presenting Socrates' final defense of the philosophical life against the theoretical and political challenge of religion.

How should we undertand the role of norms—especially epistemic norms—governing assertive speech acts? Mitchell Green (2009) has argued that these norms play the role of handicaps in the technical sense from the animal signals literature. As handicaps, they then play a large role in explaining the reliability—and so the stability (the continued prevalence)—of assertive speech acts. But though norms of assertion conceived of as social norms do indeed play this stabilizing role, these norms are best understood as deterrents and not (...) as handicaps. This paper explains the stability problem for the maintenance of animal signals, and so human communication, for we are animals too, after all; the mechanics of the handicap principle; the role of deterrents and punishments as an alternative mechanism; and the role of social norms governing assertion for the case of human communication. (shrink)

Philosophy and Phenomenological Research, EarlyView.

Progress Unchained reinterprets the history of the idea of progress using parallels between evolutionary biology and changing views of human history. Early concepts of progress in both areas saw it as the ascent of a linear scale of development toward a final goal. The 'chain of being' defined a hierarchy of living things with humans at the head, while social thinkers interpreted history as a development toward a final paradise or utopia. Darwinism reconfigured biological progress as a 'tree of life' (...) with multiple lines of advance not necessarily leading to humans, each driven by the rare innovations that generate entirely new functions. Popular writers such as H. G. Wells used a similar model to depict human progress, with competing technological innovations producing ever-more rapid changes in society. Bowler shows that as the idea of progress has become open-ended and unpredictable, a variety of alternative futures have been imagined. (shrink)

Putnam and Laudan separately argue that the falsity of past scientific theories gives us reason to doubt the truth of current theories. Their arguments have been highly influential, and have generated a significant literature over the past couple of decades. Most of this literature attempts to defend scientific realism by attacking the historical evidence on which the premises of the relevant argument are based. However, I argue that both Putnam's and Laudan's arguments are fallacious, and hence attacking their premises is (...) unnecessary. The paper concludes with a discussion of the further historical evidence that would be required if the pessimistic induction is to present a serious threat to scientific realism. (shrink)

Advances in molecular biological research in the latter half of the twentieth century have made the story of the gene vastly complicated: the more we learn about genes, the less sure we are of what a gene really is. Knowledge about the structure and functioning of genes abounds, but the gene has also become curiously intangible. This collection of essays renews the question: what are genes? Philosophers, historians and working scientists re-evaluate the question in this volume, treating the gene as (...) a focal point of interdisciplinary and international research. It will be of interest to professionals and students in the philosophy and history of science, genetics and molecular biology. (shrink)

Putnam and Laudan separately argue that the falsity of past scientific theories gives us reason to doubt the truth of current theories. Their arguments have been highly influential, and have generated a significant literature over the past couple of decades. Most of this literature attempts to defend scientific realism by attacking the historical evidence on which the premises of the relevant argument are based. However, I argue that both Putnam's and Laudan's arguments are fallacious, and hence attacking their premises is (...) unnecessary. The paper concludes with a discussion of the further historical evidence that would be required if the pessimistic induction is to present a serious threat to scientific realism. (shrink)

Stewart Cohen has recently presented solutions to two forms of what he calls "The Problem of Easy Knowledge" ("Basic Knowledge and the Problem of Easy Knowledge," Philosophy and Phenomenological Research, LXV, 2, September 2002, pp. 309-329). I offer alternative solutions. Like Cohen's, my solutions allow for basic knowledge. Unlike his, they do not require that we distinguish between animal and reflective knowledge, restrict the applicability of closure under known entailments, or deny the ability of basic knowledge to combine with self-knowledge (...) to provide inductive evidential support. My solution to the closure version of the problem covers a variation on the problem that is immune to Cohen's approach. My response to the bootstrapping version presents reasons to question whether the problem case, as Cohen presents it, is even possible, and, assuming it is, my solution avoids a false implication of Cohen's own. The key to my solutions for both versions is the distinction between an inference's transferring epistemic support, on the one hand, and its not begging the question against skeptics, on the other. (shrink)

Although much has been written about the vigorous debates over science and religion in the Victorian era, little attention has been paid to their continuing importance in early twentieth-century Britain. Reconciling Science and Religion provides a comprehensive survey of the interplay between British science and religion from the late nineteenth century to World War II. Peter J. Bowler argues that unlike the United States, where a strong fundamentalist opposition to evolutionism developed in the 1920s (most famously expressed in the (...) Scopes "monkey trial" of 1925), in Britain there was a concerted effort to reconcile science and religion. Intellectually conservative scientists championed the reconciliation and were supported by liberal theologians in the Free Churches and the Church of England, especially the Anglican "Modernists." Popular writers such as Julian Huxley and George Bernard Shaw sought to create a non-Christian religion similar in some respects to the Modernist position. Younger scientists and secularists—including Rationalists such as H. G. Wells and the Marxists—tended to oppose these efforts, as did conservative Christians, who saw the liberal position as a betrayal of the true spirit of their religion. With the increased social tensions of the 1930s, as the churches moved toward a neo-orthodoxy unfriendly to natural theology and biologists adopted the "Modern Synthesis" of genetics and evolutionary theory, the proposed reconciliation fell apart. Because the tensions between science and religion—and efforts at reconciling the two—are still very much with us today, Bowler's book will be important for everyone interested in these issues. Contents: Illustrations Preface Introduction: A Legacy of Conflict? Confrontation, Cooperation, or Coexistence? Victorian Background Science and Religion in the New Century Part One: The Sciences and Religion 1. The Religion of Scientists Changing Patterns of Belief Scientists and Christianity Scientists and Theism Method and Meaning Science and Values 2. Scientists against Superstition Science and Rationalism Religion without Revelation Marxists and Other Radicals Science, Religion, and the History of Science 3. Physics and Cosmology Ether and Spirit The New Physics The Earth and the Universe 4. Evolution and the New Natural Theology Science and Creation Evolution and Progress The Role of Lamarckism Darwinism Revived 5. Matter, Life, and Mind The Origin of Life Vitalism and Organicism Mind and Body Psychology and Religion Part Two: The Churches and Science 6. The Churches in the New Century The Challenge of the New The Churches’ Response 7. The New Theology in the Free Churches Precursors of the New Theology Campbell and the New Theology Modernism in the Free Churches 8. Anglican Modernism Modernism and the New Natural Theology Charles F. D’Arcy E. W. Barnes W. R. Inge Charles Raven 9. The Reaction against Modernism Evangelicals against Evolution Liberal Catholicism The Menace of the New Psychology Science and Modern Life Theology in the Thirties Roman Catholicism Part Three: The Wider Debate 10. Science and Secularism Against Idealism Popular Rationalism The Social Reformers 11. Religion’s Defenders From Idealism to Spiritualism Creative and Emergent Evolution Evolution and the Human Spirit Progress through Struggle The Christian Response Epilogue Biographical Appendix Bibliography Index. (shrink)

Epistemic defeat is standardly understood in either evidentialist or responsibilist terms. The seminal treatment of defeat is an evidentialist one, due to John Pollock, who famously distinguishes between undercutting and rebutting defeaters. More recently, an orthogonal distinction due to Jennifer Lackey has become widely endorsed, between so-called doxastic (or psychological) and normative defeaters. We think that neither doxastic nor normative defeaters, as Lackey understands them, exist. Both of Lackey’s categories of defeat derive from implausible assumptions about epistemic responsibility. Although Pollock’s (...) evidentialist view is superior, the evidentialism per se can be purged from it, leaving a general structure of defeat that can be incorporated in a reliabilist theory that is neither evidentialist nor responsibilist in any way. (shrink)

Oedipus the tyrant and the limits of political rationalism -- Blind faith and enlightened statesmanship in Oedipus at colonus -- The pious heroism of Antigone -- Conclusion: Nietzsche, Plato, and Aristotle on philosophy and tragedy.

Proper functionalism explicates epistemic warrant in terms of the function and normal functioning of the belief-forming process. There are two standard substantive views of the sources of functions in the literature in epistemology: God (intelligent design) or Mother Nature (evolution by natural selection). Both appear to confront the Swampman objection: couldn’t there be a mind with warranted beliefs neither designed by God nor the product of evolution by natural selection? Is there another substantive view that avoids the Swampman objection? There (...) are two. The first is the generalized selected-effects theory of functions. The second is the organizational theory of functions. Both, however, require some history to assign functions, for both are etiological theories of functions: past effects help explain current function. Swampman can then acquire functions, perhaps soon after creation, though he has none at the moment of inception. (shrink)

The Sleeping Beauty paradox in epistemology and the many-worlds interpretation of quantum mechanics both raise problems concerning subjective probability assignments. Furthermore, there are striking parallels between the two cases; in both cases personal experience has a branching structure, and in both cases the agent loses herself among the branches. However, the treatment of probability is very different in the two cases, for no good reason that I can see. Suppose, then, that we adopt the same treatment of probability in each (...) case. Then the dominant ‘thirder’ solution to the Sleeping Beauty paradox becomes incompatible with the tenability of the many-worlds interpretation. (shrink)

Stewart Cohen has recently presented solutions to two forms of what he calls “The Problem of Easy Knowledge” (“Basic Knowledge and the Problem of Easy Knowledge,” Philosophy and Phenomenological Research, LXV, 2, September 2002, pp. 309‐329). I offer alternative solutions. Like Cohen's, my solutions allow for basic knowledge. Unlike his, they do not require that we distinguish between animal and reflective knowledge, restrict the applicability of closure under known entailments, or deny the ability of basic knowledge to combine with self‐knowledge (...) to provide inductive evidential support. My solution to the closure version of the problem covers a variation on the problem that is immune to Cohen's approach. My response to the bootstrapping version presents reasons to question whether the problem case, as Cohen presents it, is even possible, and, assuming it is, my solution avoids a false implication of Cohen's own. The key to my solutions for both versions is the distinction between an inference's transferring epistemic support, on the one hand, and its not begging the question against skeptics, on the other. (shrink)

In quantum mechanics it is usually assumed that mutually exclusives states of affairs must be represented by orthogonal vectors. Recent attempts to solve the measurement problem, most notably the GRW theory, require the relaxation of this assumption. It is shown that a consequence of relaxing this assumption is that arithmatic does not apply to ordinary macroscopic objects. It is argued that such a radical move is unwarranted given the current state of understanding of the foundations of quantum mechanics.

This paper argues for the general proper functionalist view that epistemic warrant consists in the normal functioning of the belief-forming process when the process has forming true beliefs reliably as an etiological function. Such a process is reliable in normal conditions when functioning normally. This paper applies this view to so-called testimony-based beliefs. It argues that when a hearer forms a comprehension-based belief that P (a belief based on taking another to have asserted that P) through the exercise of a (...) reliable competence to comprehend and filter assertive speech acts, then the hearer's belief is prima facie warranted. The paper discusses the psychology of comprehension, the function of assertion, and the evolution of filtering mechanisms, especially coherence checking. (shrink)

Propositionalism explains the nature of knowledge-how as follows: P: To know how to ϕ is to stand in a special propositional attitude relation to propositions about how to ϕ. To know how to ride a bike is to have the required propositional attitude to propositions about how to do so. Dispositionalism offers an alternative view.D: To know how to ϕ is to stand in a behavioral-dispositional relation, a being-able-to relation, to ϕ-ing. To know how to ride a bike is to (...) have an ability to do so in the form of a complex disposition to behave in ways that constitute bike riding. Objectualism presents a third option.O: To know how to ϕ is to stand in a non-propositional, non-behavioral-dispositional objective attitude relation to a way of j-ing. To know how to ride a bike is to have an objectual attitude, perhaps a form of knowledge of, to a way of doing so.Dispositionalism is often dismissed on the basis of two criticisms designed to show its shortcomings relative to Propositionalism and Objectualism. According to the Epistemic Improvement Objection, Dispositionalism cannot account for the fact that gaining knowledge-how is an improvement in our epistemic state. According to the Modified Ability Objection, it cannot account for the fact that being able to do something is neither necessary nor sufficient for knowing how to do it. I develop a form of Dispositionalism, the Special Ability View, that avoids both objections. (shrink)

Everettian accounts of quantum mechanics entail that people branch; every possible result of a measurement actually occurs, and I have one successor for each result. Is there room for probability in such an account? The prima facie answer is no; there are no ontic chances here, and no ignorance about what will happen. But since any adequate quantum mechanical theory must make probabilistic predictions, much recent philosophical labor has gone into trying to construct an account of probability for branching selves. (...) One popular strategy involves arguing that branching selves introduce a new kind of subjective uncertainty. I argue here that the variants of this strategy in the literature all fail, either because the uncertainty is spurious, or because it is in the wrong place to yield probabilistic predictions. I conclude that uncertainty cannot be the ground for probability in Everettian quantum mechanics. (shrink)

This book seeks to restore Homer to his rightful place among the principal figures in the history of political and moral philosophy. Through this fresh and provocative analysis of the Iliad and the Odyssey, Peter J. Ahrensdorf examines Homer's understanding of the best life, the nature of the divine, and the nature of human excellence. According to Ahrensdorf, Homer teaches that human greatness eclipses that of the gods, that the contemplative and compassionate singer ultimately surpasses the heroic warrior in (...) grandeur, and that it is the courageously questioning Achilles, not the loyal Hector or even the wily Odysseus, who comes closest to the humane wisdom of Homer himself. Thanks to Homer, two of the distinctive features of Greek civilization are its extraordinary celebration of human excellence, as can be seen in Greek athletics, sculpture, and nudity, and its singular questioning of the divine, as can be seen in Greek philosophy. (shrink)

Epistemic warrant consists in the normal functioning of the belief-forming process when the process has forming true beliefs reliably as an etiological function. Evolution by natural selection is the most familiar source of etiological functions. . What then of learning? What then of Swampman? Though functions require history, natural selection is not the only source. Self-repair and trial-and-error learning are both sources. Warrant requires history, but not necessarily that much.

Recently, Richard Healey and Simon Friederich have each advocated a pragmatist interpretation of quantum mechanics as a way to dissolve its foundational problems. The idea is that if we concentrate on the way quantum claims are used, the foundational problems of quantum mechanics cannot be formulated, and so do not require solution. Their central contention is that the content of quantum claims differs from the content of non-quantum claims, in that the former is prescriptive whereas the latter is descriptive. Healey (...) also argues that claims about non-decoherent systems are largely devoid of content. I consider various objections to these claims, noting in particular the ways in which the application of pragmatism to quantum mechanics differs from previous examples of pragmatist therapy. I conclude that a pragmatist dissolution of the foundational difficulties of quantum mechanics is promising, but requires fairly radical changes to our understanding of the content of propositions and the extent of physical explanation. (shrink)

The norm of assertion, to be in force, is a social norm. What is the content of our social norm of assertion? Various linguistic arguments purport to show that to assert is to represent oneself as knowing. But to represent oneself as knowing does not entail that assertion is governed by a knowledge norm. At best these linguistic arguments provide indirect support for a knowledge norm. Furthermore, there are alternative, non-normative explanations for the linguistic data (as in recent work from (...) Van Elswyk). Direct arguments would rely on normative judgments about the permissibility or impermissibility of assertions with and without the speaker knowing the content asserted. John Turri's work experimental results purport to show that our norm of assertion is factive, and probably knowledge. But as a number of recent experimentalists (Kneer, Reuter and Broessel, Marsili and Wiegmann) have shown, Turri's results rely on the problemmatic use of 'should' as in 'Maria should assert that she owns a 1990 watch.' Correcting for this, these experimentalists provide strong evidence that our norm of assertion is not factive. The standard reply to evidence like this from the assertion of unlucky falsehoods is the excuse maneuver. But Marsili and Wiegmann, following Turri's protocol for testing for excuse validation, show that participants who judge that assertions unlucky falsehoods are permissible are not guilty of excuse validation. Given our current understanding of the experimental evidence, knowledge is not our norm of assertion. (shrink)

Everettian accounts of quantum mechanics entail that people branch; every possible result of a measurement actually occurs, and I have one successor for each result. Is there room for probability in such an account? The prima facie answer is no; there are no ontic chances here, and no ignorance about what will happen. But since any adequate quantum mechanical theory must make probabilistic predictions, much recent philosophical labor has gone into trying to construct an account of probability for branching selves. (...) One popular strategy involves arguing that branching selves introduce a new kind of subjective uncertainty. I argue here that the variants of this strategy in the literature all fail, either because the uncertainty is spurious, or because it is in the wrong place to yield probabilistic predictions. I conclude that uncertainty cannot be the ground for probability in Everettian quantum mechanics. (shrink)

What is the best account of process reliabilism about epistemic justification, especially epistemic entitlement? I argue that entitlement consists in the normal functioning (proper operation) of the belief-forming process when the process has forming true beliefs reliably as an etiological function. Etiological functions involve consequence explanation: a belief-forming process has forming true beliefs reliably as a function just in case forming-true beliefs reliably partly explains the persistence of the process. This account paves the way for avoiding standard objections to process (...) reliabilism and situations epistemic entitlement within a normative framework of functions and functional norms. (shrink)

In 'Perceptual Entitlement' (PPR 2003), Tyler Burge argues that on his teleological reliabilist account of perceptual warrant, warrant will persist in non-normal conditions, even radical skeptical scenarios like demon worlds. This paper explains why Burge's explanation falls short. But if we distinguish two grades of warrant, we can explain, in proper functionalist, teleological reliabilist terms, why warrant should persist in demon worlds. A normally functioning belief-forming process confers warrant in all worlds, provided it is reliable in normal conditions when functioning (...) normally. The first grade requires normal functioning. The second grade also requires being situated in normal conditions. (shrink)