Abstract: Is it possible that a person who behaves just like you and me in normal life situations and applies colour words to objects just as we do and makes the same colour discriminations and colour similarity judgements that we make, see green where we see red and red where we see green? Many philosophers assert that the description of such a case is somehow incoherent. Often the motivation for this assertion is “that they suspect that admitting that claim [the possibility of such a case] will put one on a slippery slope which will eventually land one in skepticism about other minds”.1 Among philosophers, however, it does not seem to be common knowledge that there is scientific evidence for the existence of such cases. Theories about the physiological basis of colour vision deficiencies together with theories about the genetics of colour vision deficiencies lead to the prediction that some people are ‘pseudo- normal’ (according to an estimation of Piantanida (1974) this occurs in around 14 of 10 000 males). 2 Pseudonormal people “would be expected to have normal colour vision except that the sensations of red and green would be reversed – something that would be difficult, if not impossible, to prove. ”3 Any philosophical theory of mind or more specifically about colour, colour appearances or colour concepts should meet the following plausible prima facie constraint: No hypotheses accepted or seriously considered in colour vision science should be regarded according to a philosophical theory to be either incoherent or unstatable or false. Therefore – regardless of whether the hypothesis of the existence of pseudonormal people is correct- the mere fact that the hypothesis is seriously considered in colour vision science, is philosophically relevant. Central claims of colour vision science when combined with specific empirical assumptions lead to the prediction that there are red-green-inverted people. Therefore any philosophical theory which excludes such a case does not meet the above formulated constraint. The failure to meet this prima facie constraint does not in itself justify the rejection of a philosophical proposal, but it does represent a serious objection. This kind of criticism will be advanced against some widely held philosophical proposals in the present paper. But let me begin with a short sketch of the relevant parts of colour vision science.
Self-Awareness
Abstract: Is a subject who undergoes an experience necessarily aware of undergoing the experience? According to the view here developed, a positive answer to this question should be accepted if ‘awareness’ is understood in a specific way, – in the sense of what will be called ‘primitive awareness’. Primitive awareness of being experientially presented with something involves, furthermore, being pre-reflectively aware of oneself as an experiencing subject. An argument is developed for the claims that pre-reflective self-awareness is the basis of our understanding of what it is to be an experiencing subject and that that understanding reveals what being an experiencing subject consists in and what it is for experiences to belong to one single experiencer. Claim is used in an argument in favor of the so-called simple view with respect to synchronic and diachronic unity of consciousness.
Qualia: The Knowledge Argument
Abstract: The knowledge argument aims to establish that conscious experience involves non-physical properties. It rests on the idea that someone who has complete physical knowledge about another conscious being might yet lack knowledge about how it feels to have the experiences of that being. It is one of the most discussed arguments against physicalism.
God and Phenomenal Consciousness: A Novel Approach to Knowledge Arguments
Publisher’s Note: In God and Phenomenal Consciousness, Yujin Nagasawa bridges debates in two distinct areas of philosophy: the philosophy of mind and the philosophy of religion. First, he introduces some of the most powerful arguments against the existence of God and provides objections to them. He then presents a parallel structure between these arguments and influential arguments offered by Thomas Nagel and Frank Jackson against the physicalist approach to phenomenal consciousness. By appealing to this structure, Nagasawa constructs novel objections to Jackson’s and Nagel’s arguments. Finally, he derives, from the failure of these arguments, a unique metaphysical thesis, which he calls ‘non-theoretical physicalism’. Through this thesis, he shows that although this world is entirely physical, there are physical facts that cannot be captured even by complete theories of the physical sciences.
Could love be like a heatwave?: Physicalism and the subjective character of experience
Abstract: We expect there to be a connection between experience and knowledge in many of our ordinary epistemic judgments; this expectation is by no means confined to our knowledge of mental states. Thus, the appeal to a special necessary connection between experience and knowledge of mental states ignores the generality of this phenomenon. More important, however, it takes this phenomenon too seriously: our unreflective expectations about the previous experiences of a person who has knowledge, as I have argued, have little to do with whether these experiences are necessary for knowledge of that sort. Thus, they provide no threat to physicalism, or any other objective theory of mental states. To be sure, it is not hard to see why reductionist theses in the philosophy of mind raise suspicion, as they have often ignored the complexity of our mental lives. In this case, however, the suspicion leads to unwarranted fears about Procrusteans under the bed: it is not the insufficiencies of objectivity, but the vestiges of Empiricism, that suggest that these theories may be inadequate for expressing all the truth about experience that there is.
Transparency and Representationalist Theories of Consciousness
Abstract: Over the past few decades, as philosophers of mind have begun to rethink the sharp divide that was traditionally drawn between the phenomenal character of an experience (what it’s like to have that experience) and its intentional content (what it represents), representationalist theories of consciousness have become increasingly popular. On this view, phenomenal character is reduced to intentional content. This article explores a key motivation for this theory, namely, considerations of experiential transparency. Experience is said to be transparent in that we ‘look right through it’ to the objects of that experience, and this is supposed to support the representationalist claim that there are no intrinsic aspects of our experience.
What’s so transparent about transparency?
Abstract: Intuitions about the transparency of experience have recently begun to play a key role in the debate about qualia. Specifically, such intuitions have been used by representationalists to support their view that the phenomenal character of our experience can be wholly explained in terms of its intentional content.[i] But what exactly does it mean to say that experience is transparent? In my view, recent discussions of transparency leave matters considerably murkier than one would like. As I will suggest, there is reason to believe that experience is not transparent in the way that representationalism requires. Although there is a sense in which experience can be said to be transparent, transparency in this sense does not give us any particular motivation for representationalism – or at least, not the pure or strong representationalism that it is usually invoked to support
Explaining What?
Abstract: The Hard Problem is surrounded by a vast literature, to which it is increasingly hard to contribute to in any meaningful way. Accordingly, the strategy here is not to offer any new metaphysical or ‘in principle’ arguments in favour of the success of materialism, but to assume a Type Q approach and look to contemporary consciousness science to see how the concept of consciousness fares there, and what kind of explanations we can hope to offer of it. It is suggested that while they will be materialist explanations, they will not be of the form that many scientists and philosophers would have us believe, but instead prompt a very different set of expectations and research projects.
The relationship between phenomenality and intentionality: Comments on Siewert’s The Significance of Consciousness
Publisher’s Note: Charles Siewert offers a persuasive argument to show that the presence of certain phenomenal features logically suffices for the presence of certain intentional ones. He claims that this shows that phenomenal features are inherently intentional. I argue that he has not established the latter thesis, even if we grant the logical sufficiency claim. For he has not ruled out a rival alternative interpretation of the relevant data, namely, that intentional features are inherently phenomenal
The Philosophy of Phenomenal Consciousness
Abstract: A primer on the philosophical issues relating to phenomenal consciousness, part of a collection of new papers by scientists and philosophers on the constitution of consciousness.