Disjunctivists (Hinton 1973, Snowdon 1990, Martin 2002, 2006) often motivate their approach to perceptual experience by appealing in part to the claim that in cases of veridical perception, the subject is directly in contact with the perceived object. When I perceive a table, for example, there is no table-like sense-impression that stands as an intermediary between the table and me. Nor am I related to the table as I am to a deer when I see its footprint in the snow. (...) I do not experience the table by experiencing some- thing else over and above the table and its facing surface. I see the facing surface of the table directly. (shrink)

The term ‘naturalism’ has no very precise meaning in contemporary philosophy. Its current usage derives from debates in America in the first half of the last century. The self-proclaimed ‘naturalists’ from that period included John Dewey, Ernest Nagel, Sidney Hook and Roy Wood Sellars. These philosophers aimed to ally philosophy more closely with science. They urged that reality is exhausted by nature, containing nothing ‘supernatural’, and that the scientific method should be used to investigate all areas of reality, including the (...) ‘human spirit’ (Krikorian 1944, Kim 2003). (shrink)

I argue that intentionalist theories of perceptual experience are unable to explain the phenomenal character of perceptual experience. I begin by describing what is involved in explaining phenomenal character, and why it is a task of philosophical theories of perceptual experience to explain it. I argue that reductionist versions of intentionalism are unable to explain the phenomenal character of perceptual experience because they mischaracterize its nature; in particular, they fail to recognize the sensory nature of experience’s phenomenal character. I argue (...) that nonreductionist versions of intentionalism are unable to explain the phenomenal character of perceptual experience because, although they recognize its sensory nature, they mislocate it. (shrink)

It is argued that the knowledge argument fails against externalist theories of mind. Enclosing Mary and cutting her off from some properties denies part of the physical world to Mary, which has the consequence of denying her certain kinds of physical knowledge. The externalist formulation of experience is shown to differ in vehicle, content, and causal role from the internalist version addressed by the knowledge argument, and is supported by results from neuroscience. This means that though the knowledge argument has (...) some force against material internalists, it misses the mark entirely against externalist accounts. (shrink)

From the first-person point of view, seeing a red square is very different from thinking about a red square, hearing an alarm sound is very different from thinking that an alarm is sounding, and smelling freshly-roasted coffee is very different from thinking that there is freshly-roasted coffee in one’s vicinity. How might the familiar contrast between representing a fact in thought and representing it in perception be captured? One influential idea is that perceptual states are phenomenally conscious whereas thoughts are (...) not. However, those theorists who hold that thoughts have a distinctive kind of phenomenal character – often known as “cognitive phenomenology” – cannot account for the contrast between thought and perception in this manner. This paper examines the various options that are available to advocates of cognitive phenomenology for capturing the experiential contrast between thought and perception, and argues that each of them faces serious challenges. (shrink)

I identify one particular strand of thought in Thomas Nagel's ‘What Is It Like to Be a Bat?’, which I think has helped shape a certain conception of perceptual consciousness that is still prevalent in the literature. On this conception, perceptual consciousness is to be explained in terms of a special class of properties perceptual experiences themselves exhibit. I also argue that this conception is in fact in conflict with one of the key ideas that supposedly animates Nagel's argument in (...) ‘What Is It Like to Be a Bat?', which is the idea of an intimate connection between the idea of consciousness and that of a point of view. (shrink)

A satisfactory solution to the problem of consciousness would take the form of a simple yet fully general model that specifies the precise conditions under which any given state of consciousness occurs. Science has uncovered numerous correlations between consciousness and neural activity, but it has not yet come anywhere close to this. We are still looking for the Newtonian laws of consciousness. -/- One of the main difficulties with consciousness is that we lack a language in which to formulate illuminating (...) generalizations about it. Philosophers and scientists talk about "what it’s like", sensations, feelings, and perceptual states such as seeing and hearing. This language does not allow a precise articulation of the internal structures of conscious states and their inter-relations. It is inadequate to capture relations of the kind we are looking for between conscious states and physical states. -/- In this thesis I refine and defend a theory of consciousness which promises to solve this regimentation problem: the representational theory of consciousness. I argue that the representational theory can solve the regimentation problem and smooth out other important obstacles to a fruitful study of consciousness. I also make a case for the theory independently of its payoffs, and I discuss the leading opposing theories at some length. (shrink)

Review Essay: Dennett’s Sweet Dreams Philosophical Obstacles to a Science of Consciousness.

How do questions concerning consciousness and phenomenal experience relate to, or interface with, questions concerning plans, knowledge and intentions? At least in the case of visual experience the relation, we shall argue, is tight. Visual perceptual experience, we shall argue, is fixed by an agent’s direct unmediated knowledge concerning her poise (or apparent poise) over a currently enabled action space. An action space, in this specific sense, is to be understood not as a fine-grained matrix of possibilities for bodily movement, (...) but as a matrix of possibilities for pursuing and accomplishing one’s intentional actions, goals and projects. If this is correct, the links between planning, intention and perceptual experience are tight, while (contrary to some recent accounts invoking the notion of ‘sensorimotor expectations’) the links between embodied activity and perceptual experience, though real, are indirect. What matters is not bodily activity itself, but our practical knowledge (which need not be verbalized or in any way explicit) of our own possibilities for action. Such knowledge, selected, shaped and filtered by the grid of plans, goals, and intentions, plays, we argue, a constitutive role in explaining the content and character of visual perceptual experience. (shrink)

The experience of emotion is a fundamental part of human consciousness. Think, for example, of how different our conscious lives would be without such experiences as joy, anger, fear, disgust, pity, anxiety, and embarrassment. It is uncontroversial that these experiences typically have an intentional content. Anger, for example, is normally directed at someone or something. One may feel angry at one=s stock broker for provid- ing bad advice or angry with the cleaning lady for dropping the vase. But it is (...) not un- controversial that emotional experiences are always intentional. John Searle, for exam- ple, remarks, AMany conscious states are not Intentional, e.g., a sudden sense of elation...@. Moreover, many animals experience emotions and it is natural to sup- pose that such emotions lack the sophistication of beliefs or thoughts. When a dog ex- periences delight in seeing its master after an absence of several days, the suggestion that at least part of the dog=s experience of delight is a belief that its master has returned home seems to import into the experience something that at best is associ- ated with it and perhaps is not really a state to which the dog is subject at all. And even in the case of human beings, emotional experience often does not seem to involve thought. Consider the experience of disgust, to take one obvious example.1 Nor is a sali- ent belief required. One may have a strong fear of spiders and yet not believe that spi- ders typically pose any risk to humans. But if emotional experiences need not involve beliefs or thoughts, then just how are they intentional?2. (shrink)

Phenomenal Concepts and Phenomenal Knowledge is an edited volume of new essays relating to the debates around phenomenal experience in philosophy of mind. Alter and Walter provide an excellent introduction to the volume, producing a well edited collection of papers that represent some of the most interesting and cutting edge work in the field, and together provide a subtle and complex overview of the contemporary theoretical landscape. In addition, as many of the papers refer to others within the volume, they (...) provide an excellent opportunity for in depth and complex debate between some of the leading theorists at work today. This review concentrates on ways in which papers in the volume further debates around the construal of phenomenal consciousness as physical or non-physical, and also on new responses to the infamous knowledge argument. (shrink)

Keith Lehrer distinguishes three kinds of questions about consciousness: scientific questions, metaphysical questions, and epistemological questions. He leaves the scientific questions to the scientists. He articulates and answers the peculiar epistemological questions posed by consciousness. And he boldly contends that no metaphysical questions about consciousness remain, once the epistemological questions have been answered. This is an astonishing claim. What happened to the metaphysical questions? Were they pseudo-questions? Were they epistemological questions masquerading as metaphysical ones? And isn't it possible that Lehrer's (...) epistemological account of consciousness raises metaphysical questions of its own? I will argue that Lehrer's account of consciousness does leave a metaphysical remainder. To deal with this remainder, Lehrer could try to expand his explanatory framework—but this would involve to a substantial revision of his current views. I end with a speculative proposal that might allow Lehrer acknowledge all the points raised in this paper, but without forcing him to revise his account of consciousness in a substantial way. (shrink)

I defend both conceptualists and nonconceptualists against an attack which has been leveled at them by critics such as Byrne (Perception and conceptual content In: Steup M, Sosa E (eds) Contemporary debates in epistemology. Blackwell, Malden, pp 231-250, 2005), Speaks (Philos Rev 114:359–398, 2005), and Crowther (Erkenntnis 65:5–276, 2006). They distinguish a ‘state’ reading and a ‘content’ reading of ‘(non)conceptual’ and argue that many arguments on either side support only the respective state views, not the respective content views. To prepare (...) the ground for my defense, I argue for an understanding of the state view in terms of concept exercise rather than concept possession and provide an overview of versions of conceptualism and nonconceptualism of different strengths. I then argue that conceptualists and nonconceptualists tacitly accept a so-called ‘state-to-content’ principle, show that existing defenses of this principle fail, and provide a new defense of it. It draws on the sources of the nonconceptualism debate, viz. the need to do justice both to the phenomenology of experience and to its epistemological role and to account for the existence of perceptual content and thought content. I argue that epistemological considerations together with considerations from the subject’s perspective support the claim that conceptual thought has conceptual and propositional content, whereas nonconceptual experience has nonconceptual and non-propositional content. (shrink)

In The Matter of Consciousness (TMOC), I defend Frank Jackson’s (1982, 1986, 1995) knowledge argument, which poses a significant challenge to physicalism. I also argue that the knowledge argument leads to Russellian monism.

According to representationalism, phenomenal character supervenes on representational content. According to first-person reports, blindsighters have no phenomenal character in the scotoma, even though their abilities suggest that they have conscious visual representations in the scotoma. The traditional representationalist response is that the representations in the scotoma are either non-conscious or non-visual. Drawing on empirical work, I consider the interpretation that blindsighters are unable to represent—and thus lack the phenomenal character of—luminance in the scotoma. However, they maintain the capacity to represent (...) other visible properties in the scotoma, and thus retain the luminance-lacking phenomenal character of these properties. (shrink)

Defenders of the Knowledge Argument contend that physicalism is false because knowing all the physical truths is not sufficient to know all the truths about the world. In particular, proponents of the Knowledge Argument claim that physicalism is false because the truths about the character of conscious experience are not knowable from the complete set of physical truths. This dissertation is a defense of the Knowledge Argument. Chapter one characterizes what physicalism is and provides support for the claim that if (...) knowing all the physical truths is not sufficient to know all the truths about the world, then physicalism is false. In chapter two, I defend the claim that knowing all the physical truths is not sufficient for knowing all the truths about the world. In addition to mounting a prima facie case for the knowledge intuition, I present and defend an epistemology grounded in direct acquaintance to provide a more substantive argument to accept it. Chapters three through five address the physicalist objections to the Knowledge Argument. The first set of objections advocates that knowing all the physical truths is, in fact, sufficient for knowing all the truths about the world. The next set of objections admits that there is some sense in which knowing all the physical truths is not sufficient for knowing all the truths about the world. However, these objections maintain that the kind of knowledge that is absent from the complete set of physical truths is know-how or knowledge by acquaintance, and not factual or propositional knowledge. The final set of objections maintain that the kind of propositional knowledge that is left out of the complete set of physical truths is compatible with physicalism. My response to these objections is part of advancing my prima facie case for the Knowledge Argument. The final chapter addresses a structural question that pertains to the Knowledge Argument. Some philosophers have maintained that the structure of the Knowledge Argument invites a kind of self-refutation of any systematic account of reality. The concern is that the Knowledge Argument proves too much, and that the dualist who uses the argument to refute physicalism risks the argument defeating his own position. I will argue that the Knowledge Argument does not refute dualism. (shrink)

The question of how a physical system gives rise to the phenomenal or experiential (olfactory, visual, somatosensitive, gestatory and auditory), is considered the most intractable of scientific and philosophical puzzles. Though this question has dominated the philosophy of mind over the last quarter century, it articulates a version of the age-old mind-body problem. The most famous response, Cartesian dualism, is on Daniel Dennett’s view still a corrosively residual and redundant feature of popular (and academic) thinking on these matters. Fifteen years (...) on from his anti-Cartesian theory of consciousness (Consciousness Explained, 1991), Dennett’s frustration with this tradition is still palpable. This frustration is primarily aimed at philosophers. (shrink)

I argue that physicalists have been too conciliatory in granting that certain classic thought experiments about consciousness like Mary the colour scientist, colour spectrum inversion, and zombies provide strong prima facie support for epiphenomenal anti-physicalism. While these thought experiments may suggest that we are intuitive epiphenomenal anti-physicalists when taken individually, when they are appropriately combined, they suggest that epiphenomenal anti-physicalism leads to a version of phenomenal scepticism according to which (i) we cannot know how our states of phenomenal consciousness compare (...) and contrast and (ii) we cannot know how our first-order beliefs about our states of consciousness compare and contrast. Insofar as comparative phenomenal scepticism is a deeply counter-intuitive view, our intuitions about consciousness are far more equivocal than they are widely thought to be. There simply may be no one metaphysical view that should qualify as their obvious champion. (shrink)

Suppose that, for one reason or another, the knowledge argument fails as a refutation of physicalism. Even so, it remains the case that there is a pressing question for physicalists raised by the argument. Does Mary acquire old information or misinformation when she leaves the black and white room? Answering this question requires physicalists to address the tricky question of the informational content of colour experiences – what information do colour experiences deliver by virtue of being the kinds of experiences (...) they are? (shrink)

In the literature on episodic memory, one claim that has been made by a number of psychologists, and that is also at least implicit in some of the accounts given by philosophers, is that being able to recollect particular past events in the distinctive way afforded by episodic memory requires the possession of aspects of a theory of mind, such as a grasp of the relationship between one’s present recollective experience and one’s own past perceptual experience of the remembered event. (...) In this paper, I re-examine what connection, if any, there is between episodic memory and theory of mind. I first criticize the dominant way in which this connection has been construed theoretically, which – perhaps influenced by other aspects of theory of mind research – has sought to link the possession of episodic memory primarily with a grasp of the idea of representation, or the idea of informational access. I then argue for a novel, alternative, way of connecting episodic memory and theory of mind, which focuses on the category of an experience, and on the role a grasp of that category might be seen to play in episodic recollection. In doing so, I also draw attention to a dimension of our understanding of the mental which remains as yet underexplored in the literature on theory of mind. (shrink)

In the ‘ordinary business of life’, everyone makes claims about what there is. For instance, we say things like: ‘There are some beautiful chairs in my favourite furniture shop’. Within the context of philosophical debate, some philosophers also make claims about what there is. For instance, some ontologists claim that there are chairs; other ontologists claim that there are no chairs. What is the relation between ontologists’ philosophical claims about what there is and ordinary claims about what there is? According (...) to Cian Dorr, ontologists’ claims and denials of existence belong to ‘a sort of professional jargon’. Dorr claims, for example, that ‘There are prime numbers between 20 and 30’ can be used superficially or used fundamentally. Ordinary uses of are superficial: we use the sentence to assert a boring, well-known truth. But in the ontology room, is used fundamentally, to assert that numbers are ‘part of the ultimate furniture of reality’: and this is a substantial metaphysical doctrine, not a boring truth. In this paper, we will show that none of Dorr’s arguments for these claims succeeds. (shrink)

Um dos grandes desafios da era da informação consiste em filtrar informações claras, rigorosas e atualizadas sobre tópicos importantes. O mesmo vale para a filosofia. Como encontrar conteúdo filosófico confiável em meio a milhares de artigos publicados diariamente na internet? Para ir ainda mais longe, como encontrar uma introdução a algum tópico com uma lista de referências bibliográficas atualizadas e que seja organizada por um especialista da área? Já que você começou a ler este livro, é provável que tenha ouvido (...) falar em algum momento da Enciclopédia Stanford de Filosofia, disponível gratuitamente na internet desde 1995. A página da Stanford faz exatamente isso. Ela cobre inúmeros verbetes sobre quase tudo em filosofia, oferecendo informação confiável sobre temas como feminismo, filosofia na América Latina, zumbis, metafísica e milhares de outros tópicos. A sugestão típica aos profissionais da filosofia que têm interesse em começar a estudar algum tópico, mas não sabem sequer por onde começar, é procurar pelo verbete relevante da Stanford. Infelizmente, o grande empecilho da página para o nosso contexto é que todos os verbetes estão disponíveis apenas em inglês, algo que cria um obstáculo a inúmeros estudantes e interessados que não dominam a língua. Neste sentido, acreditamos que esta publicação preencha um hiato importante na filosofia brasileira. Embora a filosofia no Brasil tenha se profissionalizado e expandido ao longo dos anos, há ainda lacunas em diversas áreas, e os verbetes foram aqui selecionados cuidadosamente no intuito de preencher ao menos algumas dessas lacunas. Este livro apresenta quatro verbetes cruciais para a filosofia, aqui divididos em quatro capítulos: (1) condições necessárias e suficientes, (2) referência (3) causação e (4) consciência. (shrink)

The titular ‘Mary’ refers to Jackson’s famous protagonist. Her story takes place in the future, when all physical facts have been discovered. This includes “everything in completed physics, chemistry, and neurophysiology, and all there is to know about the causal and relational facts consequent upon all this, including of course functional roles”. Mary learns all this by watching lectures on a monochromatic television monitor. But she spends her life in a black-and-white room and has no color experiences. Then she leaves (...) the room and sees colors for the first time. (shrink)