touch 27 Thirrdly, the straining of the eye 28 The occasions which suggest distance have in their own nature no relation to it 29 A difficult case proposed by Dr. Barrow as repugnant to all the known theories 30 This case contradicts a ...

This is a unique book. It is excellently written, crammed with information, wise and a pleasure to read.' ---Daniel C. Dennett, Tufts University.

The approach to critical realism, by D. Drake.--Pragmatism versus the pragmatist, by A. O. Lovejoy.--Critical realism and the possibility of knowledge, by J. B. Pratt.--The problem of error, by A. K. Rogers.--Three proofs of realism, by G. Santayana.--Knowledge and its categories, by R. W. Sellars.--On the nature of the datum, by C. A. Strong.

An understanding of the relationship between metaphysics and natural philosophy - or, as we might now say, between philosophy and science - is fundamental to understanding the rise of the "new science" of the seventeenth century. Twentieth-century scholarship on this relationship has been dominated by the thoughbt of Ernst Cassirer, E. A. Burtt, A. N. Whitehead, and Alexandre Koyre. These authors found a common core in the mathematization of nature, which they ascribed to a common Platonic or Pythagorean metaphysical presupposition, (...) on the part of Copernicus, Kepler, Galileo, and Descartes, that the book of nature is written in mathematical characters. Taking Burtt as its primary stalking horse, this chapter challenges this view by finding significant differences in the relations to metaphysics of major actors such as those just named. It does this in part by recognizing that, in the seventeenth century, metaphysics was an intellectual practice that one engaged in wittingly. By contrast, Burtt adopted a historiographical approach in which metaphysics consists of the nonempirical presupposition of an age (a position advanced by R. G. Collingwood). That approach, although valid within its limits, distorts or omits from consideration the witting practice of metaphysics by figures such as Kepler and Descartes. And it makes metaphysicians of Copernicus and Galileo, who are better classified as a mathematical astronomer and a mathematical natural philosopher and writer on astronomy. The chapter ends with some reflections on purportedly aphilosophical history of science. (shrink)

This chapter poses questions about the existence and character of the Scientific Revolution by deriving its initial categories of analysis and its initial understanding of the intellectual scene from the writings of the seventeenth century, and by following the evolution of these initial categories in succeeding centuries. This project fits the theme of cross cultural transmission and appropriation -- a theme of the present volume -- if one takes the notion of a culture broadly, so that, say, seventeenth and eighteenth (...) or nineteenth century European intellectual cultures are deemed sufficiently distinct that one can speak of the "transmission" of texts and ideas from the one to the other as cross cultural. I maintain that a process of transforming and assimilating seventeenth century achievements manifests itself in two distinct cultures of interpretation, one developed by historians of philosophy, the other by scientists and historians of science. The first, following actor's categories, interprets the revolution in the seventeenth century as a philosophical displacement, partly fomented by a radical change in astronomical theory; the second, retrospectively applying the post nineteenth century sense of the term "science" to seventeenth century events, finds a "scientific" revolution, or the birth of modern science. The chapter proposes interpreting the Scientific Revolution as a revolution in natural philosophy and metaphysics. (shrink)

The mathematical theory of communication.

INTRODUCTION: REASON AND THE PASSIONS i. Philosophy? This same philosophy is a good horse in the stable, but an arrant jade on a journey. ...

_TABLE OF CONTENTS:_ Translator's Introduction Introduction by Genevieve Rodis-Lewis _The Passions of the Sou_l: Preface PART I: About the Passions in General, and Incidentally about the Entire Nature of Man PART II: About the Number and Order of the Passions, and the Explanation of the Six Primitives PART III: About the Particular Passions Lexicon: Index to Lexicon Bibliography Index Index Locorum.

Some have claimed that people with very different beliefs literally see the world differently. Thus Thomas Kuhn: ‘what a man sees depends both upon what he looks at and also upon what his previous visual—conceptual experience has taught him to see’ (Kuhn 1970, p. ll3). This view — call it ‘Perceptual Relativism’ — entails that a scientist and a child may look at a cathode ray tube and, in a sense, the first will see it while the second won’t. The (...) claim is not, of course, that the child’s experience is ‘empty’; but that, unlike the scientist, it does not see the tube as a cathode ray tube. One way of supporting this claim is to say that one cannot see something as an F unless one has the concept F. Since the child plainly lacks the concept of a cathode ray tube, it cannot see it as a cathode ray tube. Although Perceptual Relativism is hard to believe, this supporting suggestion is not so implausible. After all, when we see (and more generally, perceive) the world, the world is presented to us in a particular way; so how can we see it as being that way unless we have some idea or conception of the way it is presented? We need not be committed to a representative theory of perception to think that perceptions in some sense represent the world. We can express this by saying that perceptions have content. Now it is a commonplace that the contents of beliefs and the other propositional attitudes involve concepts. The belief that this thing is a cathode ray tube involves, in some sense, the concept cathode ray tube. So the line of thought behind Perceptual Relativism may be expressed thus: seeing an F as an F is a state with content. (shrink)

Michael Tye untangles the complex web of empirical and conceptual issues of the newly revived imagery debate in psychology between those that liken mental...

We say "the grass is green" or "lemons are yellow" to state what everyone knows. But are the things we see around us really colored, or do they only look that way because of the effects of light rays on our eyes and brains? Is color somehow "unreal" or "subjective" and dependent on our human perceptions and the conditions under which we see things? Distinguished scholar Barry Stroud investigates these and related questions in The Quest for Reality. In this long-awaited (...) book, he examines what a person would have to do and believe in order to reach the conclusion that everyone's perceptions and beliefs about the color of things are "illusions" and do not accurately represent the way things are in the world as it is independently of us. Arguing that no such conclusion could be consistently reached, Stroud finds that the conditions of a successful unmasking of color cannot all be fulfilled. The discussion extends beyond color to present a serious challenge to many other philosophical attempts to discover the way things really are. A model of subtle, elegant, and rigorous philosophical writing, this study will attract a wide audience from all areas of philosophy. (shrink)

Attempts to show that the simplicity of a hypothesis can be measured by attending to how well it answers certain kinds of questions.

A set of hypotheses is formulated for a connectionist approach to cognitive modeling. These hypotheses are shown to be incompatible with the hypotheses underlying traditional cognitive models. The connectionist models considered are massively parallel numerical computational systems that are a kind of continuous dynamical system. The numerical variables in the system correspond semantically to fine-grained features below the level of the concepts consciously used to describe the task domain. The level of analysis is intermediate between those of symbolic cognitive models (...) and neural models. The explanations of behavior provided are like those traditional in the physical sciences, unlike the explanations provided by symbolic models. (shrink)

The major contributions of operationism have been negative, largely because operationists failed to distinguish logical theories of reference from empirical accounts of language. Behaviorism never finished an adequate formulation of verbal reports and therefore could not convincingly embrace subjective terms. But verbal responses to private stimuli can arise as social products through the contingencies of reinforcement arranged by verbal communities.

I here address Descartes' account of human nature as a union of mind and body by appealing to The Passions of the Soul. I first show that Descartes takes us to be able to reform the naturally instituted associations between bodily and mental states. I go on to argue that Descartes offers a teleological explanation of body-mind associations (those instituted both by nature and by artifice). This explanation sheds light on the ontological status of the union. I suggest that it (...) affords a way of understanding how mind and body form a true unit without compromising Descartes' dualism. (shrink)

I argue that perception is necessarily situation-dependent. The way an object is must not just be distinguished from the way it appears and the way it is represented, but also from the way it is presented given the situational features. First, I argue that the way an object is presented is best understood in terms of external, mind-independent, but situation-dependent properties of objects. Situation-dependent properties are exclusively sensitive to and ontologically dependent on the intrinsic properties of objects, such as their (...) shape, size, and color, and the situational features, such as the lighting conditions and the perceiver’s location in relation to the perceived object. Second, I argue that perceiving intrinsic properties is epistemically dependent on representing situation-dependent properties. Recognizing situation-dependent properties yields four advantages. It makes it possible to embrace the motivations that lead to phenomenalism and indirect realism by recognizing that objects are presented a certain way, while holding on to the intuition that subjects directly perceive objects. Second, it acknowledges that perceptions are not just individuated by the objects they are of, but by the ways those objects are presented given the situational features. Third, it allows for a way to accommodate the fact that there is a wide range of viewing conditions or situational features that can count as normal. Finally, it makes it possible to distinguish perception and thought about the same object with regard to what is represented. (shrink)

The relevance of Wolfgang K hler's psychoneural isomorphism principle to contemporary cognitive neuroscience is explored. K hler's approach to the mind—body problem is interpreted as a response to the foundational crisis of psychology at the beginning of the twentieth century. Some aspects of his isomorphism doctrine are discussed, with a view to reaching an interpretation that is both historically accurate and pertinent to issues currently debated in the philosophy of psychology. The principle was meant to be empirically verifiable. Accordingly, some (...) similarities between K hler's approach and current neural network modeling are pointed out, and it is shown that some recent trends in the neurosciences are broadly compatible with K hler's views on cortical functioning. Isomorphism is interpreted as a form of neuroreductionism constrained by bridging laws relating mental phenomena to macrosocopic parameters of neural function. While isomorphism is probably valid for perceptual phenomena, its applicability to higher mental processes remains doubtful. (shrink)

Psychological terms, such as ‘mind’, ‘memory’, ‘emotion’ and indeed ‘psychology’ itself, have a history. This history, I argue, supports the view that basic psychological categories refer to historical and social entities, and not to ‘natural kinds’. The case is argued through a wide ranging review of the historiography of western psychology, first, in connection with the field’s extreme modern diversity; second, in relation to the possible antecedents of the field in the early modern period; and lastly, through a brief introduction (...) to usage of the words ‘soul’, ‘mind’, ‘memory’ and ‘emotion’. The discussion situates the history of psychology within a large historical context, questions assumptions about the continuity of meaning, and draws out implications for the philosophical and social constitution of ‘psychology’ and ‘the psychological’ from the existing literature. The historical evidence, this paper concludes, does not support the conventional presumption that modern psychological terms describe ‘natural kinds’. (shrink)

On the occasion of a first conference on Cognitive Science, it seems appropriate to review the basis of common understanding between the various disciplines. In my estimate, the most fundamental contribution so far of artificial intelligence and computer science to the joint enterprise of cognitive science has been the notion of a physical symbol system, i.e., the concept of a broad class of systems capable of having and manipulating symbols, yet realizable in the physical universe. The notion of symbol so (...) defined is internal to this concept, so it becomes a hypothesis that this notion of symbols includes the symbols that we humans use every day of our lives. In this paper we attempt systematically, but plainly, to lay out the nature of physical symbol systems. Such a review is in ways familiar, but not thereby useless. Restatement of fundamentals is an important exercise. (shrink)

In the 1890's, when fields such as psychology and philosophy were just emerging, turf wars between the disciplines were common-place. Philosophers widely discounted the possibility that psychology's claim to empirical truth had anything relevant to offer their field. And psychologists, such as the crazed and eccentric Otto Weinegger, often considered themselves philosophers. Freud, it is held, was deeply influenced by his wife, Martha's, uncle, who was also a philosopher. The tension between the fields persisted, until the two fields eventually matured (...) and grew apart. Until the publication of Martin Kursch's masterly work Psychologism , few philosophers and psychologists have attended to their originally unhappy, turn-of-the-century engagement. Martin Kusch explores the origins of psychologism in Germany and fin de siecle Vienna by examining two major figures of twentieth century philosophy: Frege and Husserl. As one of the few serious works on Frege, Kusch trenchantly and clearly reconstructs the debate and the context in which it flourished. Psychologism will prove to be a key work of intellectual history on a subject which has largely been overlooked and, above all, understudied. (shrink)

This paper defends a version of Sheomaker-style representationalism about qualitative character.

A perfectly matched layer (PML) absorbing material composed of a uniaxial anisotropic material is presented for the truncation of finite-difference time-domain (FDTD) lattices. It is shown that the uniaxial PML material formulation is mathematically equivalent to the perfectly matched layer method published by Berenger (see J. Computat. Phys., Oct. 1994). However, unlike Berenger's technique, the uniaxial PML absorbing medium presented in this paper is based on a Maxwellian formulation. Numerical examples demonstrate that the FDTD implementation of the uniaxial PML medium (...) is stable, equal in effectiveness as compared to Berenger's PML medium, while being more computationally efficient. (shrink)

This discussion responds to important questions raised about my theory of fairness in the global economy by Christian Barry, Charles Beitz, A.J. Julius and Kristi Olson. I further elaborate how moral argument can be ‘internal’ to a social practice, how my proposed principles of fairness depend on international practice, how I can admit several relevant conceptions of ‘harm’ and why my account does not depend on a problematic conception of societal ‘endowments’.