Contrary to certain rumours, the mind-body problem is alive and well. So argues Joseph Levine in Purple Haze: The Puzzle of Consciousness . The main argument is simple enough. Considerations of causal efficacy require us to accept that subjective experiential, or 'phenomenal', properties are realized in basic non-mental, probably physical properties. But no amount of knowledge of those physical properties will allow us conclusively to deduce facts about the existence and nature of phenomenal properties. This failure of deducibility constitutes an (...) explanatory problem - an explanatory gap - but does not imply the existence of immaterial mental properties. Levine introduced this notion of the explanatory gap almost two decades ago. Purple Haze allows Levine to situate the explanatory gap in a broader philosophical context. He engages with those who hold that the explanatory gap is best understood as implying anti-materialist metaphysical conclusions. But he also seeks to distance himself from contemporary naturalistic philosophical theorizing about consciousness by arguing that reductive and eliminative theories of consciousness all fail. Levine's work is best seen as an attempt to firmly establish a definite status for the mind-body problem, i.e. that the mind-body problem is a real, substantive epistemological problem but emphatically not a metaphysical one. Because Levine's work is tightly focused upon contemporary Anglophone analytic philosophy of mind, there is little discussion of the broader conceptual background to the mind-body problem. My aim here is to place Levine's work in a broader conceptual context. In particular, I focus on the relationship between consciousness and intentionality in the belief that doing so will allow us better to understand and evaluate Levine's arguments and their place in contemporary theorizing about mentality and consciousness. (shrink)

Proponents of the explanatory gap claim that consciousness is a mystery. No one has ever given an account of how a physical thing could be identical to a phenomenal one. We fully understand the identity between water and H2O but the identity between pain and the firing of C-fibers is inconceivable. Mark Johnston [Journal of philosophy , 564–583] suggests that if water is constituted by H2O, not identical to it, then the explanatory gap becomes a pseudo-problem. This is because all (...) “manifest kinds”—those identified in experience—are on a par in not being identical to their physical bases, so that the special problem of the inconceivability of ‘pain = the firing of C-fibers’ vanishes. Moreover, the substitute relation, constitution, raises no explanatory difficulties: pain can be constituted by its physical base, as can water. The thesis of this paper is that the EG does not disappear when we substitute constitution for identity. I examine four arguments for the EG, and show that none of them is undermined by the move from constitution to identity. (shrink)

The topic of this thesis is how different phenomena, commonly regarded as "psychological" or "mental", are or can be apprehended in the first person. The aim is to show that a number of influential texts of contemporary philosophy display a particular type of oversight on this topic. The texts in question display, I argue, an insufficient appreciation of the case for holding that "non-qualitative" psychological phenomena are apprehended in an exclusive way in the first person. To make this case, I (...) begin by isolating a limited class of phenomena. The class, which is called the class of 'occurrent psychological doings', includes performances such as searching for a flower and adding two numbers. In chapter 2, I submit a case for holding that it is logically necessary that if an agent is performing an occurrent psychological doing, then he has a certain apprehension of what he is doing. This claim is called The First-Person Thesis'. In chapter 3, I submit a case for holding that the type of apprehension mentioned in The First-Person Thesis is logically exclusive: it is an apprehension which an agent who is doing so-and-so can have of the fact that he is doing so-and-so but which it is logically impossible for someone else to have of this fact. This claim is called 'The Exclusiveness Thesis'. In chapters 4 and 5, the two theses are used in critical discussions of some influential texts of contemporary philosophy. In chapter 4,1 examine two arguments of Wittgenstein's to the effect that one may perform some selected actions without having a particular type of "experience", or "sensation". I try to show that these arguments, while valid, have rather limited implications. I use The First-Person Thesis to illustrate the limited scope of these implications. I then try to show that the limited significance of the arguments has often been obscured by commentators of Wittgenstein. In chapter 5, I examine a position commonly held in contemporary philosophy of mind, and often associated with Nagel. The position is that "qualitative" phenomena such as perceptual experiences and bodily sensations are, because of the appearances they present in the first person, particularly difficult to explain in physical terms. An implication of this view is the claim that other phenomena do not present appearances to subjects in the allegedly problematic way that "qualitative" phenomena do. The First-Person Thesis and The Exclusiveness Thesis are used to argue that this position, as exemplified in the writings of McGinn and Chalmers, involve controversial assumptions for which insufficient justification is provided. (shrink)

Charles Siewert has given us an ingenious thought experiment involving a limited lack of conscious experience. The possibility of the described case is incompatible with a number of popular theories of consciousness. Siewert acknowledges, however, that this possibility is not a direct threat to "hidden feature" theories. I aim to do two things: first, strengthen his defense of the claim that the case is genuinely possible by considering and rejecting some further attempts to explain away our temptation to believe it (...) possible; and second, to explore how a hidden feature approach could be developed and made plausible. (shrink)

This paper uses the explanation of blindsight generated by a two-systems theory of vision in order to set Siewert a dilemma. Either his blindsight examples are modelled on actual blindsight, in which case certain reductive theories of phenomenal consciousness will have no difficulty in accommodating them. Or they are intended to be purely imaginary, in which case they will have no force against a reductive naturalist.

"Consciousness" is a multiply ambiguous word, and if our goal is to explain perceptual consciousness we had better be clear about which of the many senses of the word we are endorsing when we sign on to the project. I describe some of the relatively standard distinctions made in the philosophical literature about different meanings of the word "conscious". Then I consider some of the arguments of David Chalmers and of Ned Block that states of "phenomenal consciousness" pose special and (...) intractable problems for the scientific understanding of perception. I argue that many of these problems are introduced by obscurities in the term itself, and propose a distinction between epistemic and non-epistemic senses of the term "phenomenal consciousness". That distinction helps explain why phenomenal consciousness seems so mysterious to so many people. States of "phenomenal consciousness" are not states of one, elemental kind; they are a ragtag lot, of differing levels of complexity, corralled under one heading by a regrettable ambiguity in our terminology. (shrink)

The aims of this book are: to explain the notion of phenomenal consciousness in a non-metaphorical way that minimizes controversial assumptions; to characterize the relationship between the phenomenal character and intentionality of visual experience, visual imagery and non-imagistic thought; and to clarify the way in which conscious experience is intrinsically valuable to us. It argues for the legitimacy of a first-person approach to these issues--one which relies on a distinctively first-person warrant for judgments about one's own experience. Thought experiments are (...) employed in which one is asked to conceive of having various forms of blindsight, so as to make consciousness intellectually conspicuous by its absence in such hypothetical scenarios. It is argued that theories of mind that would commit us to denying either the conceptual or the metaphysical possibility of these scenarios neglect the occurrence of consciousness in this phenomenal sense. (shrink)

There are a number of different matters that come under the heading of ‘consciousness’. One of them is phenomenality, the feeling of say a sensation of red or a pain, that is what it is like to have such a sensation or other experience. Another is reflection on phenomenality. Imagine two infants, both of which have pain, but only one of which has a thought about that pain. Both would have phenomenal states, but only the latter would have a state (...) of reflexive consciousness. This entry will start with phenomenality, moving later to reflexivity and then to one other kind of consciousness. (shrink)