The Pauli exclusion principle is interpreted using a geometrical theory of electrons. Spin and spatial motion are described together in an eight dimensional spinor coordinate space. The field equation derives from the assumption of conformal waves. The Dirac wave function is a gradient of the scalar wave in spinor space. Electromagnetic and gravitational interactions are mediated by conformal transformations. An electron may be followed through a sequence of creation and annihilation processes. Two electrons are branches of a single particle. Each (...) satisfies a Dirac equation, but together they are a solution of the curvature condition. As two so identified electrons approach each other, the exclusion principle develops from the boundary conditions in spinor space. The gradient motion does not allow the particles to overlap. Since the spinor-gradient of the scalar wave function is odd in the coordinates, the sign of the wave function must change at the electron-electron boundary. The exclusion principle becomes geometry intrinsic and all electrons are combined into one field. Further applications are proposed including the possibility of improved numerical calculations in atomic and molecular systems. There also may be extensions to nuclear or particle physics. Implications are expected for the properties of rotating objects in a gravitational field. (shrink)

Many libertarians believe that self-ownership is a separate matter from ownership of extra-personal property. “No-proviso” libertarians hold that property ownership should be free of any “fair share” constraints, on the grounds that the inability of the very poor to control property leaves their self-ownership intact. By contrast, left-libertarians hold that while no one need compensate others for owning himself, still property owners must compensate others for owning extra-personal property. What would a “self” have to be for these claims to be (...) true? I argue that both of these camps must conceive of the boundaries of the self as including one's body but no part of the extra-personal world. However, other libertarians draw those boundaries differently, so that self-ownership cannot be separated from the right to control extra-personal property after all. In that case, property ownership must be subject to a fair share constraint, but that constraint does not require appropriators to pay compensation. This view, which I call “right libertarianism,” differs importantly from the other types primarily in its conception of the self, which I argue is independently more plausible. (shrink)

There is a pattern of miscommunication bedeviling the people working on consciousness that is reminiscent of the classic Abbott and Costello 'Who's on First?' routine. With the best of intentions, people are talking past each other, seeing major disagreements when there are only terminological or tactical preferences -- or even just matters of emphasis -- that divide the sides. Since some substantive differences also lurk in this confusion, it is well worth trying to sort out. Much of the problem seems (...) to have been caused by some misdirection in my apologia for heterophenomenology , advertised as an explicitly third-person approach to human consciousness, so I will try to make amends by first removing those misleading signposts and sending us back to the real issues. (shrink)

& Behavioral and brain imaging research indicates that human infants, humans adults, and many nonhuman animals represent large nonsymbolic numbers approximately, discriminating between sets with a ratio limit on accuracy. Some behavioral evidence, especially with human infants, suggests that these representations differ from representations of small numbers of objects. To investigate neural signatures of this distinction, event-related potentials were recorded as adult humans passively viewed the sequential presentation of dot arrays in an adaptation paradigm. In two studies, subjects viewed successive (...) arrays of a single number of dots interspersed with test arrays presenting the same or a different number; numerical range (small numerical quantities 1–3 vs. large numerical.. (shrink)

The vivid terms, "Top-down" and "Bottom-up" have become popular in several different contexts in cognitive science. My task today is to sort out some different meanings and comment on the relations between them, and their implications for cognitive science.

We are all, I take it, unshakably sure that we are each in a special position to report, or to know, or to witness or experience a set of something-or-others we may call, as neutrally as possible, elements of our own conscious experience. In short, we all believe in the doctrine of privileged access, however much we disagree or are uncertain about what we mean by privilege and access. Yet trying to make sense of this well-entrenched and highly intuitive doctrine (...) is a frustrating and tantalizing job, nor does denying the doctrine root and branch sit any more comfortably. There is a curious evanescence and incompleteness to philosophical accounts of privileged access, and I suspect the difficulty lies in the larger strategy philosophers have often quite reasonably adopted: they have set out to compose accounts of privileged access that are intuitive throughout, when in fact the only hope of giving any coherent account of any form of privileged access requires radical surgery on our intuitions, requires defending an initially counter-intuitive thesis. (shrink)

One of the striking, even amusing, spectacles to be enjoyed at the many workshops and conferences on consciousness these days is the breathtaking overconfidence with which laypeople hold forth about the nature of consciousness Btheir own in particular, but everybody =s by extrapolation. Everybody =s an expert on consciousness, it seems, and it doesn =t take any knowledge of experimental findings to secure the home truths these people enunciate with such conviction.

In lieu of an abstract, here is a brief excerpt of the content:Virtue as "Likeness to God" in Plato and SenecaDaniel C. Russell (bio)In The Center Of Raphael's Famous Painting"The School of Athens," Plato stands pointing to the heavens, and Aristotle stands pointing to the ground; there stand, that is, the mystical Plato and the down-to-earth Aristotle. Although it oversimplifies, this depiction makes sense for the same reason that Aristotle continues to enjoy a presence in modern moral philosophy that Plato (...) does not: quite simply, Plato's ethics looks too fantastic. And Plato's ethics never looks more fantastic than in the claim that our highest good is to be like God.We find this view, in various forms, in the Phaedrus, Timaeus, Laws, Republic, and Theaetetus, as well as in the Phaedo and Philebus,1 and the ancient Platonist Alcinous in his Handbook of Platonism tells us that likeness to God () is Plato's "official" position on our final end.2 Nonetheless, this view receives very little press today: many philosophers are unaware of it; some have simply ignored it or dismissed it as an idle metaphor; and most of those who have taken it more seriously have also tended to find it too otherworldly to be of much relevance to us. This latter response is due in large measure to viewing likeness to God from the perspective of the ancient Neoplatonist Plotinus.3 But there is certainly no guarantee that Plotinus's perspective on likeness to God gives us an especially accurate reconstruction of Plato's view; indeed, the interpretation of this idea was a matter of considerable controversy among Neoplatonists, some of whom offered far less other-worldly interpretations than Plotinus's.4 [End Page 241]In any event, unraveling likeness to God in Plato requires a fresh approach that makes the greatest sense of it within Plato's larger moral philosophy. And in fact we find just such a promising understanding of likeness to God when we take a fresh look at it through Stoic lenses, and through the lens of Plato's Philebus: in both we find the idea that virtue is part of the divine realm right alongside the down-to-earth idea that virtue is rational activity in relation to the world as we find it. This is not to suppose that the Stoic conception of likeness to God is an interpretation of, or descended from, Plato's conception.5 It is simply that the Stoics also found it helpful to think of virtue as likeness to God, and it will be enough if the Stoic conception opens up the range of possibilities for understanding such an idea, allowing us to see philosophical alternatives that might take us some distance towards interpreting Plato, and that may have remained otherwise out of view. Such an understanding of the idea that virtue is likeness to God as we find in the Stoics, I argue, offers just this sort of promising and unexplored alternative in Platonism.One thing that is quite clear is that Plato means for likeness to God to offer us some insight into the nature of virtue. We see this in the Timaeus, where Plato offers a model of the three-part soul, in which mastery of the parts is justice (42 a-b) and happiness (90b-d), and is what likeness to God comes to (42b-d, 47a-c); clearly, then, the virtue in question is moral virtue. Rather curiously, Plato depicts this constitution of soul as a sort of motion which is of the same kind as the motion of the universe itself (90c-d):6 as the universe consists in orbits which are orderly and reconciled in their motion, so the human soul consists in the different orbits (44d) of reason, passion, and desire, which are out of harmony when we start life, but become more orderly as we mature (43a-44d). Although this is difficult talk, it is clearly meant to depict a self-mastery of the whole soul under [End Page 242] the leadership of reason (43a-44d), which is the same as justice, and which consists in the reconciliation of one's inner motions by reason (42b-d).7 Thus we "stabilize the... (shrink)

A theme that emerged at the Sheffield Conference with particular force, to my way of thinking, was a new way of recognizing, and then avoiding, a seductive bad idea. One of its many guises is what I have called the Cartesian Theater, but it also appears in the roles of Central Processing, or Central Executive, or Norman and Shallice's SAS, or Fodor's non-modular central arena of belief fixation. What is wrong with this idea is not (just) that it (apparently) postulates (...) an _anatomically_ discernible central region of the brain--maximally non-peripheral, one might say--but that it supposes that there is a functionally identifiable _subsystem_ (however located or even distributed in the brain) that has some all too remarkable competences achieved by some all too remarkable means. There are many routes to it. Here is one that starts off in an excellent direction but then veers off. The mistaken fork is not explicitly endorsed by anybody that I can think of, but I daresay it has covertly influenced a lot of thinking on the topic. (shrink)

One of the world’s leading philosophers offers aspiring thinkers his personal trove of mind-stretching thought experiments. Over a storied career, Daniel C. Dennett has engaged questions about science and the workings of the mind. His answers have combined rigorous argument with strong empirical grounding. And a lot of fun. Intuition Pumps and Other Tools for Thinking offers seventy-seven of Dennett’s most successful "imagination-extenders and focus-holders" meant to guide you through some of life’s most treacherous subject matter: evolution, meaning, mind, (...) and free will. With patience and wit, Dennett deftly deploys his thinking tools to gain traction on these thorny issues while offering readers insight into how and why each tool was built. Alongside well-known favorites like Occam’s Razor and reductio ad absurdum lie thrilling descriptions of Dennett’s own creations: Trapped in the Robot Control Room, Beware of the Prime Mammal, and The Wandering Two-Bitser. Ranging across disciplines as diverse as psychology, biology, computer science, and physics, Dennett’s tools embrace in equal measure light-heartedness and accessibility as they welcome uninitiated and seasoned readers alike. As always, his goal remains to teach you how to "think reliably and even gracefully about really hard questions." A sweeping work of intellectual seriousness that’s also studded with impish delights, Intuition Pumps offers intrepid thinkers—in all walks of life—delicious opportunities to explore their pet ideas with new powers. (shrink)

Daniel C. Dennett " Is Perception the 'Leading Edge' of Memory? " Consciousness appears to us to consist of a sequence of contentful items, arranged in a sequence, the so-called "stream of consciousness," in which each item in turn bursts quite suddenly into consciousness and thereby enters memory, perhaps only briefly to be remembered, and then forgotten. I think that hidden in this comfortable and largely innocent picture of consciousness is a deep and seductive mistake. I intend to expose (...) and elucidate that mistake, and describe an alternative vision. (shrink)

Little, Brown, 1992 Review by Glenn Branch on Jul 5th 1999 Volume: 3, Number: 27.

This collection of 17 essays by the author offers a comprehensive theory of mind, encompassing traditional issues of consciousness and free will.

This article is an introduction to current issues in the field via a brief review of the history of the field since ryle's "the concept of mind" in 1949. The contributions of ordinary language philosophy and the first wave of identity theory provide the background for the development of the various brands of functionalism that occupy the center of attention today. Problems with functionalism concerned with mental representation, "qualia" and other presumed features of conscious experience are examined. There is an (...) extensive bibliography. (shrink)

1. Happiness, then and now -- Happiness, eudaimonia, and practical reasoning -- Happiness as eudaimonia -- Happiness and virtuous activity -- New directions from old debates -- 2. Happiness then: the sufficiency debate -- Aristotle's case against the sufficiency thesis -- 3. Happiness now: rethinking the self -- Socrates' case for the sufficiency thesis -- Epictetus and the stoic self -- The Stoics' case for the sufficiency thesis -- The embodied conception of the self -- The embodied conception and psychological (...) well-being -- The Stoics' case against the embodied conception. (shrink)

In 1991, I included a brief discussion of the Baldwin effect in my account of the evolution of human consciousness, thinking I was introducing to non-specialist readers a little-appreciated, but no longer controversial, wrinkle in orthodox neo-Darwinism. I had thought that Hinton and Nowlan (1987) and Maynard Smith (1987) had shown clearly and succinctly how and why it worked, and restored the neglected concept to grace. Here is how I put it then.

In Herbert Roitblat, ed., _Comparative Approaches to Cognitive Sciences_ , MIT Press, 1995. Daniel C. Dennett <blockquote> Do Animals Have Beliefs? </blockquote> According to one more or less standard mythology, behaviorism, the ideology and methodology that reigned in experimental psychology for most of the century, has been overthrown by a new ideology and methodology: cognitivism. Behaviorists, one is told, didn't take the mind seriously. They ignored--or even denied the existence of--mental states such as beliefs and desires, and mental processes (...) such as imagination and reasoning; behaviorists concentrated exclusively on external, publicly observable behavior, and the (external, publicly observable) conditions under which such behavior was elicited. Cognitivists, in contrast, take the mind seriously, and develop theories, models, explanations, that invoke, as real items, these internal, mental, goings-on. People (and at least some other animals) have minds after all--they are rational agents. (shrink)

Bennett and Hacker’s _Philosophical Foundations of Neuroscience_ (Blackwell, 2003), a collaboration between a philosopher (Hacker) and a neuroscientist (Bennett), is an ambitious attempt to reformulate the research agenda of cognitive neuroscience by demonstrating that cognitive scientists and other theorists, myself among them, have been bewitching each other by misusing language in a systematically “incoherent” and conceptually “confused” way. In both style and substance, the book harks back to Oxford in the early 1960's, when Ordinary Language Philosophy ruled, and Ryle and (...) Wittgenstein were the authorities on the meanings of our everyday mentalistic or psychological terms. I myself am a product of that time and place (as is Searle, for that matter), and I find much to agree with in their goals and presuppositions, and before turning to my criticisms, which will be severe, I want to highlight what I think is exactly right in their approach–the oft-forgotten lessons of Ordinary Language Philosophy. (shrink)

We investigated the coupling between a speaker's and a listener's eye movements. Some participants talked extemporaneously about a television show whose cast members they were viewing on a screen in front of them. Later, other participants listened to these monologues while viewing the same screen. Eye movements were recorded for all speakers and listeners. According to cross‐recurrence analysis, a listener's eye movements most closely matched a speaker's eye movements at a delay of 2 sec. Indeed, the more closely a listener's (...) eye movements were coupled with a speaker's, the better the listener did on a comprehension test. In a second experiment, low‐level visual cues were used to manipulate the listeners' eye movements, and these, in turn, influenced their latencies to comprehension questions. Just as eye movements reflect the mental state of an individual, the coupling between a speaker's and a listener's eye movements reflects the success of their communication. (shrink)

Consider this chess puzzle. White to checkmate in two. It appeared recently in the Boston Globe, and what startled me about it was that I had thought it had been proven that you can’t checkmate with a lone knight (and a king, of course). This is a counterexample, a strange circumstance that can arise in a legal game of chess. This fact is a higher-order truth of chess, namely that the “proof” that you can never checkmate with a lone knight (...) and king is unsound. Now let’s consider chmess (I made up the term); it’s the game that you get by allowing the king to move two spaces, not one, in any direction. I made it up and I don’t know if anybody has ever played it. I have no idea whether it’s worth playing. Probably it isn’t, but it doesn’t matter; it’s not even worth our attention long enough to figure out. But a moment’s reflection reveals that there are exactly as many higher-order a priori truths of chmess as there are of chess, namely, an infinity of them. And no doubt they would be roughly as difficult to discover and to prove as the higherorder truths of chess. There are people who make a living working out the truths of chess and certainly it’s been a big avocation for many other people. But I doubt if anybody yet has spent more than 5 minutes trying to work out the a priori truths, and the higher-order truths, of chmess. (shrink)

"An immensely valuable and detailed analysis of foreign, mainly American, assistance to Latin American higher education, To Export Progress provides an understanding of the 'what' and the 'why' of foreign aid to a key sector. This book will be a classic in its field." —Philip G. Altbach, Monan Professor of Higher Education, Boston College "Professor Daniel C. Levy, a leading authority in the field of higher education and the nonprofit sector in Latin America, once again has opened an otherwise (...) neglected field through his carefully researched and reported study of philanthropic support for university reform in the region. Drawing on a wealth of archival material, documentary evidence, interviews, and first hand experience with the actors and agencies involved, To Export Progress illuminates the vision and ideals inspiring international agencies, as much as the realities they confronted in deciding on grants and loans policy, from the 1960s to the 1980s. The book is strongly recommended for scholars and students of international education, for Latin American experts, and for philanthropic managers and educational administrators in the developing world." —Jorge Balan, Senior Program Officer for Higher Education, The Ford Foundation. In this study of the attempts to export the modern Western university, its ideas, and its form to the Third World, Daniel C. Levy examines the development assistance provided by the Ford Foundation, the U.S. Agency for International Development, and the Inter-American Development Bank and their relations with local partners in Latin America in the 1960s and 1970s. Levy considers the funders, how they selected partners, which countries and institutions were favored, and to what effect. Based on meticulous research and careful analysis, the book provides a detailed look at philanthropic assistance to the region during the era of modernization and development in Latin America. (shrink)

Virtue ethicists sometimes say that a right action is what a virtuous person would do, characteristically, in the circumstances. But some have objected recently that right action cannot be defined as what a virtuous person would do in the circumstances because there are circumstances in which a right action is possible but in which no virtuous person would be found. This objection moves from the premise that a given person ought to do an action that no virtuous person would do, (...) to the conclusion that the action is a right action. I demon‐strate that virtue ethicists distinguish “ought” from “right” and reject the assumption that “ought” implies “right.” I then show how their rejection of that assumption blocks this “right but not virtuous” objection. I conclude by showing how the thesis that “ought” does not imply “right” can clarify a further dispute in virtue ethics regarding whether “ought” implies “can.”. (shrink)

In several works, Ruth Millikan has developed a ‘teleosemantic’ theory of concepts. Millikan’s theory has three explicit desiderata for concepts: wide scope, non-descriptionist content, and naturalism. I contend that Millikan’s theory cannot fulfill all of these desiderata simultaneously. Theoretical concepts, such as those of chemistry and physics, fall under Millikan’s intended scope, but I will argue that her theory cannot account for these concepts in a way that is compatible with both non-descriptionism and naturalism. In these cases, Millikan’s view is (...) subject to the traditional ‘indeterminacy problem’ for teleosemantic theories. This leaves the content of theoretical concepts indeterminate between a descriptionist and non-descriptionist content. Furthermore, this problem cannot be overcome without giving up the naturalism desideratum. I suggest that the scope of Millikan’s theory should be limited. At best, the theory will be able to attribute naturalistic, non-descriptionist content to a smaller range of concepts. (shrink)

The field of Artificial Intelligence has produced so many new concepts--or at least vivid and more structured versions of old concepts--that it would be surprising if none of them turned out to be of value to students of animal behavior. Which will be most valuable? I will resist the temptation to engage in either prophecy or salesmanship; instead of attempting to answer the question: "How might Artificial Intelligence inform the study of animal behavior?" I will concentrate on the obverse: "How (...) might the study of animal behavior inform research in Artificial Intelligence?". (shrink)

PRESIDENT BUSH, announcing this month that he was in favor of teaching about "intelligent design" in the schools, said, "I think that part of education is to expose people to different schools of thought." A couple of weeks later, Senator Bill Frist of Tennessee, the Republican leader, made the same point. Teaching both intelligent design and evolution "doesn't force any particular theory on anyone," Mr. Frist said. "I think in a pluralistic society that is the fairest way to go about (...) education and training people for the future.". (shrink)

One of the things you learn if you read books and articles in (or about) cognitive science is that the brain does a lot of "filling in"--not filling in, but "filling in"--in scare quotes. My claim today will be that this way of talking is not a safe bit of shorthand, or an innocent bit of temporizing, but a source of deep confusion and error. The phenomena described in terms of "filling in" are real, surprising, and theoretically important, but it (...) is a mistake to conceive of them as instances of something being filled in, for that vivid phrase always suggests too much--sometimes a little too much, but often a lot too much. Here are some examples (my boldface throughout). (shrink)