This book defends Frank Jackson’s knowledge argument against physicalism. According to physicalism, consciousness is a physical phenomenon. The knowledge argument stars Mary, who learns all objective, physical information through black-and-white media and yet acquires new information when she first sees colors for herself: information about what it is like to see in color. Based partly on that case, Jackson concludes that not all information is physical. The book argues that the knowledge argument succeeds in refuting all (...) standard versions of physicalism: versions on which consciousness is grounded by what objective science reveals. It also argues that given further, plausible assumptions, the knowledge argument leads to Russellian monism, on which there are intrinsic properties that both constitute consciousness and underlie properties physics describes, such as mass and charge. It explains how the knowledge argument establishes those two conclusions and defends the argument against numerous objections. (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.

In response to Petitmengin and Bitbol's recent account of first-person methodologies in the study of consciousness, I provide a revised model of our introspective knowledge of our own conscious experience. This model, which I call the existential constitution model of phenomenal knowledge, avoids the problems that Petitmengin and Bitbol identify with standard observational models of introspection while also avoiding an underlying metaphorical misconception in their own proximity model, which misconstrues first-person knowledge of consciousness in terms (...) of a dichotomous epistemic relationship. The end result is a clearer understanding of the unique nature and epistemic properties of our knowledge of consciousness, as well as the epistemic status of subsequent first-person reports on conscious experience. (shrink)

Recent results from neuroimaging appear to indicate that some patients in a vegetative state have partially intact awareness. These results may demonstrate misdiagnosis and suggest the need not only for alternative forms of treatment, but also for the reconsideration of end-of-life decisions in cases of disorders of consciousness. This article addresses the second consequence. First, I will discuss which aspects of consciousness may be involved in neuroimaging findings. I will then consider various factors relevant to ethical end-of-life decision-making, (...) and analyse whether and to what extent the above consequence applies to these factors. It will be shown that knowledge of the existence of partial awareness in patients with disorders of consciousness only influences end-of-life decision-making if certain background assumptions are made. (shrink)

An experiment explored the acquisition of conscious and unconscious knowledge of semantic prosody in a second language under incidental and intentional learning conditions. Semantic prosody is the conotational coloring of the semantics of a word, largely uncaptured by dictionary definitions. Contrary to some claims in the literature, we revealed that both conscious and unconscious knowledge were involved in the acquisition of semantic prosody. Intentional learning resulted in similar unconscious but more conscious knowledge than incidental learning. The results (...) are discussed in terms of second language learning and the nature of unconscious knowledge. (shrink)

What is the role of consciousness in our mental lives? Declan Smithies argues here that consciousness is essential to explaining how we can acquire knowledge and justified belief about ourselves and the world around us. On this view, unconscious beings cannot form justified beliefs and so they cannot know anything at all. Consciousness is the ultimate basis of all knowledge and epistemic justification.

This paper motivates two bases for ascribing propositional semantic knowledge (or something knowledgelike): first, because it’s necessary to rationalize linguistic action; and, second, because it’s part of an empirical theory that would explain various aspects of linguistic behavior. The semantic knowledge ascribed on these two bases seems to differ in content, epistemic status, and cognitive role. This raises the question: how are they related, if at all? The bulk of the paper addresses this question. It distinguishes a variety (...) of answers and their varying philosophical and empirical commitments. (shrink)

"Knowledge of self, knowledge of others, error and the place of consciousness" examines texts and problems from the phenomenological tradition to show that the other does not present her/himself as a consciousness enclosed in a merely material body. I discuss Merleau-Ponty''s attempt to supplant this view with the view that the other is always seen as an "incarnate consciousness" - a unity of mind and body in activity. This view faces a difficulty in that it (...) seems to collapse the distinction between one''s own understanding of one''s behavior and the understanding which another might have of this same behavior. In response to this objection, I study how the meaning of people''s behaviors are settled in dialogue. I argue that the meanings that an actor gives to her or his behavior cannot rest entirely with that person, nor are they determined solely by the interpreter, but instead develop in the interaction between the actor and the interpreter. (shrink)

Abstract"Knowledge of self, knowledge of others, error and the place of consciousness" examines texts and problems from the phenomenological tradition to show that the other does not present her/himself as a consciousness enclosed in a merely material body. I discuss Merleau-Ponty's attempt to supplant this view with the view that the other is always seen as an "incarnate consciousness" - a unity of mind and body in activity. This view faces a difficulty in that it (...) seems to collapse the distinction between one's own understanding of one's behavior and the understanding which another might have of this same behavior. In response to this objection, I study how the meaning of people's behaviors are settled in dialogue. I argue that the meanings that an actor gives to her or his behavior cannot rest entirely with that person, nor are they determined solely by the interpreter, but instead develop in the interaction between the actor and the interpreter. (shrink)

Abstract"Knowledge of self, knowledge of others, error and the place of consciousness" examines texts and problems from the phenomenological tradition to show that the other does not present her/himself as a consciousness enclosed in a merely material body. I discuss Merleau-Ponty's attempt to supplant this view with the view that the other is always seen as an "incarnate consciousness" - a unity of mind and body in activity. This view faces a difficulty in that it (...) seems to collapse the distinction between one's own understanding of one's behavior and the understanding which another might have of this same behavior. In response to this objection, I study how the meaning of people's behaviors are settled in dialogue. I argue that the meanings that an actor gives to her or his behavior cannot rest entirely with that person, nor are they determined solely by the interpreter, but instead develop in the interaction between the actor and the interpreter. (shrink)

I address a type of circularity threat that arises for the view that we employ general basic logical principles in deductive reasoning. This type of threat has been used to argue that whatever knowing such principles is, it cannot be a fully cognitive or propositional state, otherwise deductive reasoning would not be possible. I look at two versions of the circularity threat and answer them in a way that both challenges the view that we need to apply general logical principles (...) in deductive reasoning and defuses the threat to a cognitivist account of knowing basic logical principles. (shrink)

Suppose we know our own attitudes, e.g. judgments and decisions, only by unconsciously interpreting ourselves. Would this undermine the assumption that there are conscious attitudes? Carruthers has argued that if the mentioned view of selfknowledge is combined with either of the two most common approaches to consciousness, i.e. the higher-order state account or the global workspace theory , then the conjunction of these theories implies that there are no conscious attitudes. I shall show that Carruthers' argument against the existence (...) of conscious attitudes doesn't succeed, and mention studies on autism and logical reasoning under cognitive load that suggest that there are conscious attitudes. (shrink)

Recently, some philosophers have claimed that consciousness has an important epistemological role to play in the introspective self-ascription of one’s own mental states. This is the thesis of the epistemological role of consciousness for introspective self-knowledge. I will criticize BonJour’s account of the role of consciousness for introspection. He does not provide any reason for believing that conscious states are epistemically better off than non-conscious states. Then I will sketch a representationalist account of how the thesis (...) could be true. Conscious states are available to the subject in a very special way in which non-conscious states are not available. This is the first part of the explanation. The crucial further element in the representationalist account is what I would like to call the ‘introspective mode of mind’. A mind can operate in certain ways or modes – modes of mind. Introspection normally takes place in the introspective mode of mind, judgments about one’s environment in the mode of ‘taking one’s appearances at face value’. And there probably are other modes of mind. The introspective mode of mind is characterized by the special way or framework in which cognitive capacities are employed. (shrink)

In this chapter, I consider the unity of self-consciousness and objectivity. Starting from the notion that the objective character and the self-conscious character of thought seem in tension, I discuss Sebastian Rödl’s Self-Consciousness and Objectivity and his thesis that this tension is merely apparent. This resolution suggests an immediate route to absolute idealism. I recall two Hegelian objections against such an immediate route. Against this background, it transpires that the dissolution of the apparent opposition of objectivity and self- (...) class='Hi'>consciousness can only be a preliminary step, opening our eyes to an actual opposition animating the pursuit of knowledge: the opposition of knowledge of nature and self-knowledge. This actual opposition cannot be removed as merely apparent and instead has to be sublated through articulation of its speculative unity. I consider two paradigms for the exposition of such a speculative unity: Kant’s account of judgments of beauty, and Hegel’s account of the speculative unity of life and self-consciousness. I close by contrasting these two approaches with Rödl’s characterization, which strikes me as one-sided. Absolute idealism, properly understood, requires us to develop the speculative unity of knowledge of nature and self-knowledge from both sides, showing us that knowledge of nature is self-knowledge, but equally: that self-knowledge requires knowledge of ourselves as nature. (shrink)

Most people believe that consciousness is real. But illusionists say it isn’t—they say consciousness is an illusion. One common illusionist strategy for defending their view involves a debunking argument. They explain why people _believe_ that consciousness exists in a way that doesn’t imply that it _does_ exist; and, in so doing, they aim to show that that belief is unjustified. In this paper I argue that we can know consciousness exists even if these debunking arguments are (...) sound. To do this, I draw on the claim that some knowledge is constituted, not by beliefs in propositions, but by awareness of properties and objects. Then I argue that accepting this claim allows us to evade illusionists’ debunking arguments by allowing us to hold that our knowledge of consciousness does not depend solely on potentially debunked _beliefs_ in consciousness. Finally, while considering potential illusionist responses, I suggest that my strategy also yields a plausible account of our most basic knowledge of consciousness and an explanation for why so few people accept illusionism even when they have (or had) no decisive reply to illusionists’ arguments. (shrink)

In this paper I investigate where the boundaries of conscious mental life lie in Cavendish’s theory, and why. Cavendish argues for a wholly material yet wholly thinking universe. She claims that all matter is capable of “self-knowledge” and “perception” (OEP, p. 138), so that every part of nature “must have its own knowledge and perception, according to its own particular nature” (OEP, p. 141). It is unclear, however, whether the universal capacity of matter to know and perceive also (...) implies the presence of consciousness. I show that Cavendish’s use of the notions of “self-knowledge” and “perception” implies the attribution of consciousness to all bodies. I identify one condition under which the ubiquitous presence of consciousness is intuitively required in Cavendish’s system: namely the presence of intentional agency in every part of nature, which Cavendish conceives as necessary, alongside the capacity of self-motion, to account for the orderly behavior of any body. (shrink)

The Identity Thesis, proposed by Reid for the case of sensations, and extended by Brentano to conscious states generally, says that a state is conscious iff it is identical with introspective knowledge of its own instantiation. The Thesis offers simple explanations of a number of puzzling features of introspective self-knowledge, and unites the problems of introspection, consciousness and knowledge in the single problem of the metaphysical nature of conscious states. It does nothing to solve the latter (...) problem, but it does entail that a functionalist account of consciousness is incomplete without an exact functionalist definition of knowledge itself. (shrink)

This paper aims to discuss Spinoza’s theory of consciousness by arguing that consciousness is the expression of bodily complexity in terms of adequate knowledge. Firstly, I present the link that Spinoza built up in the second part of the Ethics between the ability of the mind to know itself and the idea ideae theory. Secondly, I present in what sense consciousness turns out to be the result of an adequate knowledge emerging from the epistemological resources (...) of a body as complex as the human one. Thirdly, I address a possible objection that might arise in considering our daily-life experience of consciousness. I conclude that understanding consciousness in terms of adequate knowledge is coherent with both our phenomenological experience and Spinoza’s texts. Such an interpretation permits to underline the overthrow of Descartes’ account of consciousness by Spinoza. (shrink)

Quite a few recent models are rapidly introducing new concepts describing different levels of consciousness. This situation is getting confusing because some theorists formulate their models without making reference to existing views, redundantly adding complexity to an already difficult problem. In this paper, I present and compare nine neurocognitive models to highlight points of convergence and divergence. Two aspects of consciousness seem especially important: perception of self in time and complexity of self-representations. To this I add frequency of (...) self-focus, amount of self-related information, and accuracy of self-knowledge. Overall, I conclude that many novel concepts (e.g., reflective, primary, core, extended, recursive, and minimal consciousness) are useful in helping us distinguish between delicate variations in consciousness and in clarifying theoretical issues that have been intensely debated in the scientific literature—e.g., consciousness in relation to mirror self-recognition and language. Ó 2005 Elsevier Inc. All rights reserved. (shrink)

Shamans of the Piaroa ethnic group (southern Venezuela) conceive of power in terms of knowledge derived from visionary experiences. Märipa is an epistemology concerning the translation of knowledge derived from the integrative mode of consciousness, induced primarily through the consumption of plant hallucinogens, to practical effect during waking life. I integrate mythological, neurobiological, experiential, and ethnographic data to demonstrate what märipa is, and how it functions. The theory and method of märipa underlie not only Piaroa shamanic activity, (...) but all aspects of Piaroa life; mythology, causality, eschatology, and history. Piaroa shamanic practices involve conditioning the mind to achieve optimal perceptual capacities that facilitate accurate prediction and successful psycho‐social prescription. Piaroa shamans describe their technologies of consciousness in terms of gods and spirits, but also in terms of studying and the acquisition of information. Because neurobiological processes underlie the development and experience of märipa, the language of neurobiology enables a partial translation of this indigenous epistemology. The concepts of feed forward neural processing and somatic markers are central to the processes of mental imagery cultivation that Piaroa shamans employ to divine solutions to adaptive problems. Piaroa 'techniques of ecstasy' involve the ability to apply mythological templates of human adaptation to schemas of human behaviour based on years of social analysis in association with heightened information processing capacities derivative of refined experimentation with the integrative mode of consciousness. Keyordsshamanism, neurophenomenology inugrativeconsciousness, hallucinogens. (shrink)

Quite a few recent models are rapidly introducing new concepts describing different levels of consciousness. This situ- ation is getting confusing because some theorists formulate their models without making reference to existing views, redun- dantly adding complexity to an already difficult problem. In this paper, I present and compare nine neurocognitive models to highlight points of convergence and divergence. Two aspects of consciousness seem especially important: perception of self in time and complexity of self-representations. To this I add (...) frequency of self-focus, amount of self-related informa- tion, and accuracy of self-knowledge. Overall, I conclude that many novel concepts (e.g., reflective, primary, core, extend- ed, recursive, and minimal consciousness) are useful in helping us distinguish between delicate variations in consciousness and in clarifying theoretical issues that have been intensely debated in the scientific literature—e.g., consciousness in rela- tion to mirror self-recognition and language. (shrink)

Peter Munz, a former student of both Popper and Wittgenstein, begins his comparison of the two great twentieth-century philosophers, by explaining that since the demise of positivism there have emerged, broadly speaking, two philosophical options: Wittgenstein, with the absolute relativism of his theory that meaning is a function of language games and that social configurations are determinants of knowledge; and Popper’s evolutionary epistemology – conscious knowledge is a special case of the relationship which exists between all living beings (...) and their environments. Professor Munz examines and rejects the Wittgensteinian position. Instead, Our Knowledge of the Growth of Knowledge , first published in 1985, elaborates the potentially fruitful link between Popper’s critical rationalism and Neo-Darwinism. Read in the light of the latter, Popper’s philosophy leads to the transformation of Kant’s Transcendental Idealism into ‘Hypothetical Realism’, whilst the emphasis on the biological orientation of Popper’s thought helps to illumine some difficulties in Popper’s ‘falsificationism’. (shrink)

Dienes & Perner offer us a theory of explicit and implicit knowledge that promises to systematise a large and diverse body of research in cognitive psychology. Their advertised strategy is to unpack this distinction in terms of explicit and implicit representation. But when one digs deeper one finds the “Higher-Order Thought” theory of consciousness doing much of the work. This reduces both the plausibility and usefulness of their account. We think their strategy is broadly correct, but that consensus (...) on the explicit/implicit knowledge distinction is still a fair way off. (shrink)

The philosophical investigation of consciousness has a long-standing history in both Indian and Western thought. The conceptual models and analyses that have emerged in one cultural framework may be profitably reviewed in the light of another. In this context, a study of the notion of consciousness in the transcendental phenomenology of Edmund Husserl is not only important as a focus on a remarkable achievement in the context of Western thought, but is also useful for an appreciation of the (...) concern with this question in the Indian philosophical tradition, and especially in the tradition of Advaita Vedānta of Ādi Śamkara. The starting point for this paper is the belief that phenomenology has a recognizably common face for both these traditions. This paper investigates the possibility of a parallel notion of consciousness in the transcendental phenomenology of Husserl and the Advaita Vedānta of Śamkara, with particular emphasis on Husserl’s ‘Transcendental I’ and Śamkara’s ‘Witness Consciousness’ (Sākshi Caitanya). In the process, it explores the phenomenological relevance of the concept of consciousness in Indian philosophy, with special reference to the concept of pure consciousness as one of the essential criteria for any sound theory of knowledge. It more importantly highlights the Advaitic understanding of pure consciousness as one of the major contributions to the field of comparative philosophy that forms a vantage point for cross-cultural comparison. While pointing to significant differences in their respective approaches to understanding the nature of consciousness, the exploration finally unveils the common thesis for both Śamkara and Husserl that ‘pure consciousness’ is essentially foundational, evidencing and absolute for any epistemic act. (shrink)

The problem of consciousness – the problem of how the matter of our brains produces perception, sensation, emotion and thought – is often described as one of the outstanding remaining problems for science. Although a lot is known in detail about how the brain works it is widely believed that the explanation of consciousness is something which still eludes us. According to a recent survey in (of all places!) The Economist, ‘consciousness awaits its Einstein’.1 Consciousness researchers (...) are looking for that missing piece of the jigsaw which will explain how the lived world of conscious experience arises out of the initially unpromising yoghurt-like matter of the brain. (shrink)

In classical Arabic philosophy, the topic of consciousness is commonly associated with Avicenna's ‘Flying Man’ thought experiment. But Avicenna's explorations of the nature of consciousness are not confined to the Flying Man, and he is by no means the only classical Islamic thinker to deem consciousness an important feature of our experience. Consciousness also plays a important role in the epistemology and moral psychology of Avicenna's intellectual rivals, the theologians (mutakallumūn), who represent important sources for Avicenna's (...) own theorizing about consciousness. And while Avicenna's philosophical successor and critic, Averroes, seems to banish consciousness from the core of his cognitive psychology, in doing so he seems to anticipate contemporary efforts to expand the scope of consciousness through the notion of the ‘extended’ mind. This paper examines the varieties of consciousness recognized by Avicenna and several other classical Islamic thinkers with a view to understanding the extent to which their accounts can be mapped on to some of the concepts of consciousness delineated by contemporary philosophers of mind. (shrink)

The manuscript “Self-knowledge, self-consciousness and objectification” is the text of Sesemann’s manuscript collection, Vilnius University (F122-102). The manuscript in the notebook dates from the third quarter of 1954 (Krasnokamsk). The notes were made in ink, some in pencil. The text was written during Sesemann's stay in a labor camp in Taishet (Irkutsk region) in 1950-1955. Due to the limited volume of publications in the journal, only part of Sesemann's text is given.

Consciousness and the Prospects of Physicalism has three parts. The first (Chapters 1–4) develops a response to the knowledge and conceivability arguments against physicalism, one that features the open possibility that introspective representations represent mental properties as having features they actually lack. The second part (Chapters 5 and 6) proposes a physicalist version of a Russellian Monist answer to these arguments, the core of which is that currently unknown intrinsic physical properties provide categorical bases for known physical properties (...) and also yield an account of consciousness. The third part (Chapters 7 and 8) defends a nonreductive account of physicalism about the mental, according to which the relation between the mental and the microphysical is constitution, where this relation is not explicated by the notion of identity. (shrink)

" -- "New Scientist" Intended for anyone attempting to find their way through the large and confusingly interwoven philosophical literature on consciousness, ..

A target question for the scientific study of consciousness is how dimensions of consciousness, such as the ability to feel pain and pleasure or reflect on one’s own experience, vary in different states and animal species. Considering the tight link between consciousness and moral status, answers to these questions have implications for law and ethics. Here we point out that given this link, the scientific community studying consciousness may face implicit pressure to carry out certain research (...) programs or interpret results in ways that justify current norms rather than challenge them. We show that because consciousness largely determines moral status, the use of nonhuman animals in the scientific study of consciousness introduces a direct conflict between scientific relevance and ethics—the more scientifically valuable an animal model is for studying consciousness, the more difficult it becomes to ethically justify compromises to its well-being for consciousness research. Finally, in light of these considerations, we call for a discussion of the immediate ethical corollaries of the body of knowledge that has accumulated and for a more explicit consideration of the role of ideology and ethics in the scientific study of consciousness. (shrink)

It has been argued that consciousness might be what differentiates human from machine mentality. What then is consciousness? We discuss consciousness, particularly perception accounts of consciousness. It is argued that perception and consciousness are distinct. Armstrong's account of consciousness is rejected. It is proposed that perception is a necessary but not sufficient condition for consciousness, and that there is a distinction to be drawn between consciousness and self-consciousness. Consciousness is tightly (...) linked to attention and to certain sorts of knowledge. Implications for machine consciousness and machine attention are discussed. (shrink)

Peter Munz, a former student of both Popper and Wittgenstein, begins his comparison of the two great twentieth-century philosophers, by explaining that since the demise of positivism there have emerged, broadly speaking, two philosophical options: Wittgenstein, with the absolute relativism of his theory that meaning is a function of language games and that social configurations are determinants of knowledge; and Popper’s evolutionary epistemology – conscious knowledge is a special case of the relationship which exists between all living beings (...) and their environments. Professor Munz examines and rejects the Wittgensteinian position. Instead, _Our Knowledge of the Growth of Knowledge_, first published in 1985, elaborates the potentially fruitful link between Popper’s critical rationalism and Neo-Darwinism. Read in the light of the latter, Popper’s philosophy leads to the transformation of Kant’s Transcendental Idealism into ‘Hypothetical Realism’, whilst the emphasis on the biological orientation of Popper’s thought helps to illumine some difficulties in Popper’s ‘falsificationism’. (shrink)

consciousness comes about as a result of irritating nervous tissue, is just as unaccountable as the appearance of Djin when Aladdin rubbed his lamp.

The long-accepted interpretation of the history of modern philosophy is that, beginning with Descartes, philosophers explicitly took the data of consciousness as their epistemic foundation. Descartes supposedly held that the mind always thinks and that consciousness is an necessary to thought. Unsatisfied with this doctrine, Leibniz and Locke modified this view of the conscious nature of thought. The former introduced the concept of unconscious thought with petites perceptions, the latter argued that while thought is conscious, the mind does (...) not always think. The mind-body distinction Descartes is to have introduced, with which later seventeenth- and eighteenth-century philosophers allegedly struggled, is between what is conscious and what is not conscious. The various conceptions of consciousness integral to this history are assumed not to differ from one another to any interesting extent. ;A purpose of this study is to question this understanding of modern views of consciousness. I contend that there is evidence that conventional reading of the history of the concept of consciousness in modern philosophy is unacceptable. Its simplicity obscures the richness and complexity of the various conceptions of consciousness and their roles in modern philosophy. ;The standard view provides no analysis of the early modern concept of consciousness. The present study comprises primarily an analysis of a work which was supposed by its author to be the first effort at an account of consciousness in Western philosophy. Thus this study is the beginning of an attempt to place the development of modern views of consciousness in its historical context. Though its results are schematic and incomplete, they do include grounds for taking the possibility that a 1728 author's claim to present the first systematic treatment of consciousness to be a reasonable possibility. (shrink)

Within the discourse surrounding mind-body interaction, mental causation is intimately associated with non-reductive physicalism. However, such a theory holds two opposing views: that all causal properties and relations can be explicated by physics and that special sciences have an explanatory role. Jaegwon Kim attempts to deconstruct this problematic contradiction by arguing that it is untenable for non-reductive physicalists to explain human behavior by appeal to mental properties. In combination, Kim’s critique of mental causation and the phenomenal concept strategy serves as (...) an effectual response to the anti-physicalist stance enclosed within the Knowledge Argument and the Zombie Thought Experiment. (shrink)

For a wide range of concepts, a thinker’s understanding of what it is for a thing to fall under the concept plausibly involves knowledge of an identity. It involves knowledge that the thing has to have the same property as is exemplified in instantiation of the concept in some distinguished, basic instance. This paper addresses the question: can we apply this general model of the role of identity in understanding to the case of subjective, conscious states? In particular, (...) can we explain our understanding of what it is for someone else to be in a particular conscious state in terms of our knowledge of the relation of identity which that state bears to some of our own states?[1] This is a large issue, with many ramifications both within and beyond the philosophy of mind; so let me give a map for the route I aim to take. We first need to consider the features of explanations of concepts in terms of identity in domains outside the mental. There are substantial constraints on legitimate explanation of concepts in terms of identity. There are also reasons that it is harder to meet these constraints in the case of concepts of conscious states than it is in other cases. I will go on to suggest a way in which we can overcome the special difficulties of the conscious case, and to try to elaborate the nature both of our understanding of first person applications of concepts of conscious states, and of our grasp of an identity relation applied to these states. A positive account of understanding in this area, as in any other, has to dovetail with a credible epistemology of conscious states in oneself and in others. I will offer something under that head, and say how the resulting position steers a middle way distinct from each of the two classic rival positions on conscious states of the later Wittgenstein on the one hand, and of Frege on the other. (shrink)