The "great debate" in cognitive science today is about the nature of mental images. One side says images are basically pictures in the head. The other side says they are like the symbol structures in computers. If the picture-in-the-head theorists are right, then computers will never be able to think like people.This book contains the most intelligible and incisive articles in the debate, articles by cognitive psychologists, computer scientists and philosophers. The most exciting imagery phenomena are described, phenomena that indicate (...) that mental images can be rotated and scanned, that smaller images are harder to see than larger ones, that when mental images are made larger they eventually overflow, that the "screen" they overflow from has a determinable shape (elliptical), and that this "screen" subtends a determinate visual angle, the angle of vision of the mind's eye.Such experiments cry out for explanation. If images are pictures in the head, who (or what) looks at them? Why haven't brain scientists found them? Such questions are the subject of the great debate.IMAGERY is an excellent choice for courses in cognitive psychology, perception: artificial intelligence, computer science; philosophy of mind, of psychology and of science; minds and machines, science and society.Contributors include: Roger Brown and Richard Herrnstein (on the work of Roger N. Shepard), Daniel Dennett, Jerry Fodor, Robert Schwartz, Stephen Kosslyn, Steven Pinker, George Smith, Steven Shwartz, and Zenon Pylyshyn,. (shrink)

Relative to the abundance of literature devoted to the legal significance of UN authorisation, little has been written about whether the UN’s failure to sanction an intervention can ever make it immoral. This is the question that I take up here. I argue that UN authorisation (or lack thereof) can have some indirect bearing on the moral status of a humanitarian intervention. That is, it can affect whether an intervention satisfies other widely accepted justifying conditions, such as proportionality, “internal” legitimacy, (...) and likelihood of success. The more interesting question, however, is whether the UN’s failure to provide a mandate can make a humanitarian operation unjust independently of these other familiar considerations. Is a proportional, internally legitimate humanitarian intervention, with a just cause and strong prospect of success, still morally unacceptable if it is not approved by the United Nations Security Council? This is the question that I turn to in the second half of the paper. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Russell's Naturalistic Turn 37 INTRODUCTION L RUSSELL'S NATURALISTIC TURN RUSSELI.?S NATURALISTIC TURN NED S. GARVIN Philosophy I Albion College Albion, MI 49224 I Quine, Ontological Relativity (New York: Columbia U. P., 1969), p. 83. 1 Russell advocated this hypothetical acceptance of science much earlier, e.g., in AMa, pp. 398-9. Here we have many of the hallmarks of naturalized epistemology: (I) fallibilism, (2) the "best theory" account of science, (3) (...) the view that "knowing" is a natural phenomenon not confined to humans, and (4) the embedding of epistemology in behavioural psychology. But in 1940 Russell was a foundationalist (though an increasingly moderate one) who insisted that normative, or as he called it, "critical" epistemology must be distinguished from natural epistemology, and that critical epistemology is philosophically more important: "Within its limitations, theory of knowledge of the above sort is legitimate and In the nrst form of theory of knowledge, we accept the scientific account of the world, not as certainly true, but as the best at present available. The world, as presented by science, contains a phenomenon caIled "knowing", and theory of knowledge, in its first form, has to consider what sort of phenomenon this is. Viewed from the outside, it is, to begin with, a characteristic of living organisms, which is (broadly speaking) increasingly displayed as the organism becomes more complex. (Pp. 12-13)2 Both knowledge and error, at this stage, are observable relations between the behaviour of the organism and the facts of the environment. (P. 14) Quine argued that traditional justification requires non-scientific propositions that are more secure than scientific propositions, and we see there are none: science is providing the best account of the world and our knowledge of it. Though we abandon the attempt to justify science, we still attempt to understand it for nearly the same reasons that always motivated epistemology: "in order to see how evidence relates to theory, and in what ways one's theory of nature transcends any available evidence".I Russell contemplated a naturalistic turn of his own in 1943, shortly after writing An Inquiry into Meaning and Truth and nearly twentyfive years before Quine's landmark address. In the introduction to his Inquiry Russell claims that there are "two different inquiries, both important, and each having a right to the name 'theory of knowledge '" (IM~, p. 12). The first is recognizably natural epistemology: n.s. 11 (summer 1991): 36-S1.SSN 0036-016p ru•••II: the Journal of the Bertrand Russell Archives McMaster University Library Press w. V. Quine's address to the Fourteenth International Congress of Philosophy in 1968, published a year later as "Epistemology Naturalized " in Ontological Relativity and Other Essays, is a landmark of recent epistemology, marking the turn from traditional critical epistemology to a descriptive epistemology firmly embedded within natural science. I n 1943 Bertrand Russell wrote a little-known, three-page document he titled "Project of Future Work". It outlines the descriptive project of examining non-demonstrative inference that eventually becomes the focal point of Human Knowledge: Its Scope and Limits. More remarkably, this document anticipates many salient features of naturalized epistemology, e.g., Russell argues that (I) an answer to scepticism is futile, we cannot justify scientific method; (2) the Humean Predicament arises from a traditional insistence on an unrealistic, demonstrative canon of justification; (3) non-demonstrative, fallible inference is already firmly embedded in scientific practice as a canon of inference, and should augment the demonstrative canon; and (4) the primary epistemic· problem is descriptive: in what circumstances does scientific method allow us to infer the existence of something unobserved from what we observe. These claims, in the wake of An Inquiry into Meaning and Truth, suggest that Russell was on the verge of his own naturalistic turn. I argue that, despite striking anticipations of naturalized epistemology, Russell develops his descriptive project within a more traditional, critical epistemic perspective. 38 NED S. GARVIN important. But there is another kind of theory of knowledge which goes deeper and has, I think, much greater importance" (IMT;., p. 14). Russell observes that behavioural psychologists omit that they are fallible observers, and this fallibility introduces doubt into their results. Further, naive... (shrink)

The class of 2-square ultrafilters on ω equals the union, for n ≥ 1, of the classes of strictly n Ramsey ultrafilters on ω.

NED HETTINGER | : This essay explores the tension between concern for the suffering of wild animals and concern about massive human influence on nature. It examines Clare Palmer’s animal ethics and its attempt to balance a commitment to the laissez-faire policy of nonintervention in nature with our obligations to animals. The paper contrasts her approach with an alternative defence of this laissez-faire intuition based on a significant and increasingly important environmental value: Respect for an Independent Nature. The paper articulates (...) and defends naturalness value and explores its implications for the laissez-faire intuition and for concern about wild-animal suffering. | : Le présent essai examine la tension entre la préoccupation pour la souffrance des animaux sauvages et celle concernant l’influence massive des humains sur la nature. Il examine l’éthique animale de Clare Palmer, notamment sa tentative d’atteindre un équilibre entre la politique de non-intervention dans la nature dite du « laissez-faire » et nos engagements envers les animaux. L’article propose une approche alternative à celle de Palmer qui, tout en défendant cette intuition du « laissez-faire », se fonde cette fois sur une valeur environnementale significative de plus en plus importante : le Respect pour une Nature Indépendante. Le texte articule et défend la valeur de naturalité et examine les implications de celle-ci pour l’intuition du « laissez-faire » ainsi que pour le souci envers la souffrance des animaux sauvages. (shrink)

Les personnages représentés ici sont parmi les plus anodins d'une série de figurines à caractère racial, qui trouvent leur origine aux Etats-Unis à la fin du XIXe siècle, mais qui, depuis, se sont dispersées dans toute l'Amérique, en Europe et en Asie. Le personnage masculin est censé décrire le cuisinier noir, figure centrale de la maisonnée blanche imaginaire de la fin du XIXe siècle dans le sud des Etats-Unis. Imaginaire non parce que de tels personnes n'existaient pas ; au contrair..

Les personnages représentés ici sont parmi les plus anodins d'une série de figurines à caractère racial, qui trouvent leur origine aux Etats-Unis à la fin du XIXe siècle, mais qui, depuis, se sont dispersées dans toute l'Amérique, en Europe et en Asie. Le personnage masculin est censé décrire le cuisinier noir, figure centrale de la maisonnée blanche imaginaire de la fin du XIXe siècle dans le sud des Etats-Unis. Imaginaire non parce que de tels personnes n'existaient pas ; au contrair...

Este trabajo discute una de las objeciones de N. Hall al análisis contrafactual de D. Lewis. Según Hall, los intentos de fortalecer el análisis contrafactual se apoyan en la aceptación de la transitividad, la localidad y el carácter intrínseco de las relaciones causales. Esto es problemático en cuanto el concepto de doble prevención evidencia tensiones entre estas tres tesis y el concepto de dependencia, central en el análisis de Lewis. Revisando uno de los ejemplos de Hall, se defiende que su (...) crítica al análisis contrafactual cumple parcialmente su objetivo en referencia a la localidad, ya que sólo una de las estructuras causales que Hall presenta acepta la dependencia y no la localidad, no tratándose de un típico caso de doble prevención. Finalmente se propone la denominación early doble prevention para los casos que aceptan la dependencia y no la localidad, y late doble prevention para los que aceptan ambas tesis. This paper discusses one of the objections made by N. Hall to D. Lewis's counterfactual analysis. According to Hall, the attempts to strengthen the counterfactual analysis are supported by the acceptance of transitivity, locality and intrinsic nature of causal relationships. This is problematic, as the concept of double prevention demonstrates the tensions existing among these three theses and the concept of dependence which is central in Lewis's analysis. By studying one of the examples given by Hall, we can sustain that his criticism to counterfactual analysis partially fulfills its goal in reference to locality, taking into account that only one of the causal structures exposed by Hall accept dependence but not locality and is not a typical example of double prevention. Finally we suggest the name of early double prevention for those cases that accept the dependency but not the locality, and late double prevention for those accepting both theses. (shrink)

According to standard, pre-philosophical intuitions, there are many composite objects in the physical universe. There is, for example, my bicycle, which is composed of various parts - wheels, handlebars, molecules, atoms, etc. Recently, a growing body of philosophical literature has concerned itself with questions about the nature of composition.1 The main question that has been raised about composition is, roughly, this: Under what circumstances do some things compose, or add up to, or form, a single object? It turns out that (...) it is surprisingly difficult to give a satisfactory answer to this question that accords with standard, pre-philosophical intuitions about the universe's composite objects. In fact, the three rival views in response to this question that have received the most support in the literature are (i) that there are no objects composed of two or more parts (which means that there are no stars, chairs, humans, or bicycles);2 (ii) that the only objects composed of two or more parts are living organisms (which still means no stars. (shrink)

Consciousness is a mongrel concept: there are a number of very different "consciousnesses." Phenomenal consciousness is experience; the phenomenally conscious aspect of a state is what it is like to be in that state. The mark of access-consciousness, by contrast, is availability for use in reasoning and rationally guiding speech and action. These concepts are often partly or totally conflated, with bad results. This target article uses as an example a form of reasoning about a function of "consciousness" based on (...) the phenomenon of blindsight. Some information about stimuli in the blind field is represented in the brains of blindsight patients, as shown by their correct "guesses," but they cannot harness this information in the service of action, and this is said to show that a function of phenomenal consciousness is somehow to enable information represented in the brain to guide action. But stimuli in the blind field are BOTH access-unconscious and phenomenally unconscious. The fallacy is: an obvious function of the machinery of access-consciousness is illicitly transferred to phenomenal consciousness. (shrink)

As a physicist‐theologian, John Polkinghorne has done a great service for the community of scholars engaged in the theology‐and‐science dialogue as well as for a broader audience of interested persons. We examine Polkinghorne's theological method to see what it suggests about his understanding of the function of systematic theology and his philosophy of science. His strong emphasis on rationality in theology corresponds to his epistemological discussions. Polkinghorne links his methodology to “thinking,” so “experience” seems relegated to the minds, and not (...) the lives, of the believers. Consequently, his theology does not easily engage ethical, political, and cultural landscapes where the concrete contexts of particular people's lives engage their faith. The challenge for those of us in religion‐and‐science is to come to grips with this messy, complicated world. (shrink)

According to Conceptual Role Semantics, the meaning of a representation is the role of that representation in the cognitive life of the agent, e.g. in perception, thought and decision-making. It is an extension of the well known "use" theory of meaning, according to which the meaning of a word is its use in communication and more generally, in social interaction. CRS supplements external use by including the role of a symbol inside a computer or a brain. The uses appealed to (...) are not just actual, but also counterfactual: not only what effects a thought does have, but what effects it would have had if stimuli or other states had differed. The view has arisen separately in philosophy and in cognitive science. The source of the view is Wittgenstein and Sellars, but the source in contemporary philosophy is a series of papers by Harman and Field. Other proponents in philosophy have included Block, Horwich, Loar, McGinn and Peacocke. In cognitive science, they include Woods and Miller and Johnson-Laird. (shrink)

Mental (or semantic) holism is the doctrine that the identity of a belief content (or the meaning of a sentence that expresses it) is determined by its place in the web of beliefs or sentences comprising a whole theory or group of theories. It can be contrasted with two other views: atomism and molecularism. Molecularism characterizes meaning and content in terms of relatively small parts of the web in a way that allows many different theories to share those parts. For (...) example, the meaning of 'chase' might be said by a molecularist to be try to catch. Atomism characterizes meaning and content in terms of none of the web; it says that sentences and beliefs have meaning or content independently of their relations to other sentences or beliefs. One major motivation for holism has come from reflections on the natures of confirmation and learning. As Quine (1953) observed, claims about the world are confirmed not individually, but only in conjunction with theories of which they are a part. And typically, one cannot come to understand scientific claims without understanding a significant chunk of the theory of which they are a part. For example, in learning the Newtonian concepts of 'force', 'mass', kinetic energy' and 'momentum', one doesn't learn any definitions of these terms in terms that are understood beforehand, for there are no such definitions. Rather, these theoretical terms were all learned together in conjunction with procedures for solving problems. The major problem with holism is that it threatens to make generalization in psychology virtually impossible. If the content of any state depends on all others, it would be extremely unlikely that any two believers would ever share a state with the same content. Moreover, holism would appear to conflict with our ordinary conception of reasoning. What sentences one accepts influence what one infers. if i accept a sentence and then later reject it, i thereby change the inferential role of that sentence, so the meaning of what i accept wouldn't be the same as what i later reject. but then it would be difficult to understand on this view how one could rationally --or even irrationally!-- change one's mind. and agreement and translation are also problematic for much the same reason. holists have responded (1) by proposing that we should think not in terms of "same/different" meaning but in terms of a gradient of similarity of meaning, (2) by proposing "two factor" theories or (3) by simply accepting the consequence that there is no real difference between changing meanings and changing beliefs. (shrink)

In a recent Analysis article, Quentin Smith argues that classical theism is inconsistent with certain consequences of Stephen Hawking's quantum cosmology.1 Although I am not a theist, it seems to me that Smith's argument fails to establish its conclusion. The purpose of this paper is to show what is wrong with Smith's argument. According to Smith, Hawking's cosmological theory includes what Smith calls "Hawking's wave function law." Hawking's wave function law (hereafter, "HL") apparently has, among its consequences, the following claim. (...) (1) The unconditional probability that a universe like this one - i.e., a universe with the metric hij and matter field Φ - should begin to exist is 95%.2 Smith then argues that the theist who accepts HL must also accept that the following sentence was once true.3.. (shrink)

David Lewis's influential work on the epistemology and metaphysics of objective chance has convinced many philosophers of the central importance of the following two claims: First, it is a serious cost of reductionist positions about chance (such as that occupied by Lewis) that they are, apparently, forced to modify the Principal Principle--the central principle relating objective chance to rational subjective probability--in order to avoid contradiction. Second, it is a perhaps more serious cost of the rival non-reductionist position that, unlike reductionism, (...) it can give no coherent explanation for why the Principal Principle should hold. I argue that both of these claims are fundamentally mistaken. (shrink)

How can we disentangle the neural basis of phenomenal consciousness from the neural machinery of the cognitive access that underlies reports of phenomenal consciousness? We can see the problem in stark form if we ask how we could tell whether representations inside a Fodorian module are phenomenally conscious. The methodology would seem straightforward: find the neural natural kinds that are the basis of phenomenal consciousness in clear cases when subjects are completely confident and we have no reason to doubt their (...) authority, and look to see whether those neural natural kinds exist within Fodorian modules. But a puzzle arises: do we include the machinery underlying reportability within the neural natural kinds of the clear cases? If the answer is ‘Yes’, then there can be no phenomenally conscious representations in Fodorian modules. But how can we know if the answer is ‘Yes’? The suggested methodology requires an answer to the question it was supposed to answer! The paper argues for an abstract solution to the problem and exhibits a source of empirical data that is relevant, data that show that in a certain sense phenomenal consciousness overflows cognitive accessibility. The paper argues that we can find a neural realizer of this overflow if assume that the neural basis of phenomenal consciousness does not include the neural basis of cognitive accessibility and that this assumption is justified by the explanations it allows. (shrink)

Causation is a deeply intuitive and familiar relation, gripped powerfully by common sense. Or so it seems. As is typical in philosophy, however, that deep intuitive familiarity has not led to any philosophical account of causation that is at once clean, precise, and widely agreed upon. Not for lack of trying: the last thirty years or so have seen dozens of attempts to provide such an account, and the pace of development is, if anything, accelerating. (See Collins et al. [2003a] (...) for a comprehensive sampling of the latest work.). (shrink)

The explanatory gap . Consciousness is a mystery. No one has ever given an account, even a highly speculative, hypothetical, and incomplete account of how a physical thing could have phenomenal states. Suppose that consciousness is identical to a property of the brain, say activity in the pyramidal cells of layer 5 of the cortex involving reverberatory circuits from cortical layer 6 to the thalamus and back to layers 4 and 6,as Crick and Koch have suggested for visual consciousness. .) (...) Still, that identity itself calls out for explanation! Proponents of an explanatory gap disagree about whether the gap is permanent. Some say that we are like the scientifically naive person who is told that matter = energy, but does not have the concepts required to make sense of the idea. If we can acquire these concepts, the gap is closable. Others say the gap is uncloseable because of our cognitive limitations. Still others say that the gap is a consequence of the fundamental nature of consciousness. (shrink)

As he makes transitions from literature to philosophy and psychoanalysis, Lukacher displays a theoretical imagination and historical vision that bring to the ...

One of the most important issues concerning the foundations ofconscious perception centerson thequestion of whether perceptual consciousness is rich or sparse. The overflow argument uses a form of ‘iconic memory’ toarguethatperceptual consciousnessisricher (i.e.,has a higher capacity) than cognitive access: when observing a complex scene we are conscious of more than we can report or think about. Recently, the overflow argumenthas been challenged both empirically and conceptually. This paper reviews the controversy, arguing that proponents of sparse perception are committed to the (...) postulation of (i) a peculiar kind of generic conscious representation that has no independent rationale and (ii) an unmotivated form of unconscious representation that in some cases conflicts with what we know about unconscious representation. (shrink)

Let psychologism be the doctrine that whether behavior is intelligent behavior depends on the character of the internal information processing that produces it. More specifically, I mean psychologism to involve the doctrine that two systems could have actual and potential behavior _typical_ of familiar intelligent beings, that the two systems could be exactly alike in their actual and potential behavior, and in their behavioral dispositions and capacities and counterfactual behavioral properties (i.e., what behaviors, behavioral dispositions, and behavioral capacities they would (...) have exhibited had their stimuli differed)--the two systems could be alike in all these ways, yet there could be a difference in the information processing that mediates their stimuli and responses that determines that one is not at all intelligent while the other is fully intelligent. (shrink)

This book argues that there is a joint in nature between seeing and thinking, perception, and cognition. Perception is constitutively iconic, nonconceptual, and nonpropositional, whereas cognition does not have these properties constitutively. The book does not appeal to “intuitions,” as is common in philosophy, but to empirical evidence, including experiments in neuroscience and psychology. The book argues that cognition affects perception, i.e., that perception is cognitively penetrable, but that this does not impugn the joint in nature. A key part of (...) the argument is that we perceive not only low-level properties like colors, shapes, and textures but also high-level properties such as faces and causation. Along the way, the book explains the difference between perception and perceptual memory, the differences between format and content, and whether perception is probabilistic despite our lack of awareness of probabilistic properties. The book argues for perceptual categories that are not concepts, that perception need not be singular, that perceptual attribution and perceptual discrimination are equally fundamental, and that basic features of the mind known as “core cognition” are not a third category in between perception and cognition. The chapter on consciousness leverages these results to argue against some of the most widely accepted theories of consciousness. Although only one chapter is about consciousness, much of the rest of the book repurposes work on consciousness to isolate the scientific basis of perception. (shrink)

This article concerns the interplay between two issues that involve both philosophy and neuroscience: whether the content of phenomenal consciousness is 'rich' or 'sparse', whether phenomenal consciousness goes beyond cognitive access, and how it would be possible for there to be evidence one way or the other.

Is consciousness based in prefrontal circuits involved in cognitive processes like thought, reasoning, and memory or, alternatively, is it based in sensory areas in the back of the neocortex? The no-report paradigm has been crucial to this debate because it aims to separate the neural basis of the cognitive processes underlying post-perceptual decision and report from the neural basis of conscious perception itself. However, the no-report paradigm is problematic because, even in the absence of report, subjects might engage in post-perceptual (...) cognitive processing. Therefore, to isolate the neural basis of consciousness, a no-cognition paradigm is needed. Here, I describe a no-cognition approach to binocular rivalry and outline how this approach can help resolve debates about the neural basis of consciousness. (shrink)

The ‘Principal Principle’ states, roughly, that one's subjective probability for a proposition should conform to one's beliefs about that proposition's objective chance of coming true. David Lewis has argued (i) that this principle provides the defining role for chance; (ii) that it conflicts with his reductionist thesis of Humean supervenience, and so must be replaced by an amended version that avoids the conflict; hence (iii) that nothing perfectly deserves the name ‘chance’, although something can come close enough by playing the (...) role picked out by the amended principle. We show that in fact there must be ‘chances’ that perfectly play what Lewis takes to be the defining role. But this is not the happy conclusion it might seem, since these ‘chances’ behave too strangely to deserve the name. The lesson is simple: much more than the Principal Principle—more to the point, much more than the connection between chance and credence—informs our understanding of objective chance. 1 Introduction 2 Preliminaries 3 Undermining futures and the New Principle 4 The Old Principle rescued? 5 The New Bug 6 Conclusion. (shrink)

This is my first publication of the distinction between phenomenal consciousness and access consciousness, though not using quite those terms. It ends with this: "The upshot is this: If Searle is using the access sense of "consciousness," his argument doesn't get to first base. If, as is more likely, he intends the what-it-is-like sense, his argument depends on assumptions about issues that the cognitivist is bound to regard as deeply unsettled empirical questions." Searle replies: "He refers to what he calls (...) an "access sense of consciousness." On my account there is no such sense.". (shrink)

Can we consciously see more items at once than can be held in visual working memory? This question has elud- ed resolution because the ultimate evidence is subjects’ reports in which phenomenal consciousness is filtered through working memory. However, a new technique makes use of the fact that unattended ‘ensemble prop- erties’ can be detected ‘for free’ without decreasing working memory capacity.

... PHILOSOPHY OF PSYCHOLOGY is the study of conceptual issues in psychology. For the most part, these issues fall equally well in psychology as in..

Much of recent philosophy of perception is oriented towards accounting for the phenomenal character of perception—what it is like to perceive—in a non-mentalistic way—that is, without appealing to mental objects or mental qualities. In opposition to such views, I claim that the phenomenal character of perception of a red round object cannot be explained by or reduced to direct awareness of the object, its redness and roundness—or representation of such objects and qualities. Qualities of perception that are not captured by (...) what one is directly aware of or by representational content are instances of what Gilbert Harman has called “mental paint” (Block, 1990; Harman, 1990). The claim of this paper is that empirical facts about attention point in the direction of mental paint. The argument starts with the claim (later modified) that when one moves one's attention around a scene while keeping one's eyes fixed, the phenomenology of perception can change in ways that do not reflect which qualities of objects one is directly aware of or the way the world is represented to be. These changes in the phenomenology of perception cannot be accounted for in terms of awareness of or representation of the focus of attention because they manifest themselves in experience as differences in apparent contrast, apparent color saturation, apparent size, apparent speed, apparent time of occurrence and other appearances. There is a way of coping with these phenomena in terms of vague contents, but vague contents cannot save direct realism or representationism because the kind of vagueness required clashes wth the phenomenology itself. (shrink)