Alex Byrne

David Lewis claims that a simple sort of anti-Humeanism-that the rational agent desires something to the extent he believes it to be good-can be given a decision-theoretic formulation, which Lewis calls 'Desire as Belief' (DAB). Given the (widely held) assumption that Jeffrey conditionalising is a rationally permissible way to change one's mind in the face of new evidence, Lewis proves that DAB leads to absurdity. Thus, according to Lewis, the simple form of anti-Humeanism stands refuted. In this paper we investigate whether Lewis's case against DAB can be strengthened by examining how it fares under rival versions of decision theory, including other conceptions of rational ways to change one's mind. We argue that the anti-Humean may escape Lewis's argument either by adopting a version of causal decision theory, or by claiming that the refutation only applies to hyper-idealised rational agents, or by denying that the decision-theoretic framework has the expressive capacity to formulate anti-Humeanism.

Somewhat at random, I shall pick chapter 7 for a closer look. Tye distinguishes three versions of the view that colors are “mind-independent, illumination-independent properties”, which we frequently see physical objects as possessing. The first is emergentism, according to which colors are “simple qualities” that nomologically supervene on the physical facts: there is a possible world exactly like the actual world physically, but in which nothing is colored. Brute nonreductive physicalism is the same as emergentism, except that colors are said to metaphysically supervene on the physical facts. Hence, on this second view, there is no physical duplicate of the actual world in which nothing is colored. The third position, reductive physicalism, simply identifies colors with physical properties.

Perceptual experiences justify beliefs—that much seems obvious. As Brewer puts it, “sense experiential states provide reasons for empirical beliefs” (this volume, xx). In Mind and World McDowell argues that we can get from this apparent platitude to the controversial claim that perceptual experiences have conceptual content: [W]e can coherently credit experiences with rational relations to judgement and belief, but only if we take it that spontaneity is already implicated in receptivity; that is, only if we take it that experiences have conceptual content. (1994, 162) Brewer agrees. Their view is sometimes called conceptualism; nonconceptualism is the rival position, that experiences have nonconceptual content. One initial obstacle is understanding what the issue is. What is conceptual content, and how is it different from nonconceptual content? Section 1 of this paper explains two versions of each of the rival positions: state (non)conceptualism and content (non)conceptualism; the latter pair is the locus of the relevant dispute. Two prominent arguments for content nonconceptualism—the richness argument and the continuity argument—both fail (section 2). McDowell’s and Brewer’s epistemological defenses of content conceptualism are also faulty (section 3). Section 4 gives a more simple-minded case for conceptualism; finally, some reasons are given for rejecting the claim—on one natural interpretation—that experiences justify beliefs.

Some things are _about_, or are _directed on_, or _represent_, other things. For example, the sentence 'Cats are animals' is about cats (and about animals), this article is about intentionality, Emanuel Leutze's most famous painting is about Washington's crossing of the Delaware, lanterns hung in Boston's North Church were about the British, and a map of Boston is about Boston. In contrast, '#a$b', a blank slate, and the city of Boston are not about anything. Many mental states and events also have "aboutness": the belief that cats are animals is about cats, as is the fear of cats, the desire to have many cats, and seeing that the cats are on the mat. Arguably some mental states and events are not about anything: sensations, like pains and itches, are often held to be examples. Actions can also be about other things: hunting for the cat is about the cat, although tripping over the cat is not. This -- rather vaguely characterized -- phenomenon of "aboutness" is called _intentionality_. Something that is about (directed on, represents) something else is said to "have intentionality", or (in the case of mental states) is said to be an "intentional mental state"

The diversity of topics discussed in this book reflects the breadth of Judith Jarvis Thomson's philosophical work. Throughout her long career at MIT, Thomson's straightforward approach and emphasis on problem-solving have shaped philosophy in significant ways. Some of the book's contributions discuss specific moral and political issues such as abortion, self-defense, the rights and obligations of prospective fathers, and political campaign finance. Other contributions concern the foundations of moral theory, focusing on hedonism, virtue ethics, the nature of nonconsequentialism, and the objectivity of moral claims. Finally, contributions in metaphysics and epistemology discuss the existence of sets, the structures reflected in conditional statements, and the commitments of testimony. Contributors: Jonathan Bennett, Richard L. Cartwright, Joshua Cohen, N. Ann Davis, Catherine Z. Elgin, Gilbert Harman, Barbara Herman, Frances Myrna Kamm, Claudia Mills, T.M. Scanlon, Ernest Sosa.

There’s also plenty of controversy about moral law. Should we give much more to charity than we actually do? Is torture permissible under extreme circumstances? Is eating meat wrong? Could it ever be permissible to kill one innocent person in order to save five? But, again we know a lot. Throwing good taste out with the bathwater for the sake of a clear example, everyone knows that boiling babies for fun is wrong. Boiling lobsters is a matter that reasonable people may disagree about, but as far as boiling babies goes, agreement is pretty much universal. Babies suffer when boiled—they are not like the worms that live near undersea vents, who are partial to scalding water. If something goes without saying, it’s this: one ought not to boil babies for fun.

Consciousness, Color, and Content is a significant contribution to our understanding of consciousness, among other things. I have learned a lot from it, as well as Tye’s other writings. What’s more, I actually agree with much of it – fortunately for this symposium, not all of it. The book continues the defense of the “PANIC” theory of phenomenal consciousness that Tye began in Ten Problems of Consciousness (1995). A fair chunk of it, though, is largely independent of this theory: the discussion of the knowledge argument, the explanatory gap, and color. Tye says much of interest about these topics. But as most of my disagreement is with the PANIC theory, I shall concentrate on that. The PANIC theory is nothing short of ambitious. It is a reductive account of phenomenal consciousness in intentional/functional terms. Tye further gives, at least in outline, a broadly physicalistic account of intentionality (a “naturalized semantics”), in terms of causal covariation. Putting the PANIC theory and Tye’s naturalized semantics together, the result is a physicalistically acceptable theory of phenomenal consciousness. The two parts of this package are independent. A naturalized semantics can be combined with dualism about consciousness (a position close to this is in Chalmers, 1996). And a PANIC theorist is at liberty to endorse a rival physicalistic theory of intentionality, or indeed could take intentionality to be entirely irreducible. The plan is this. Section 1 briefly airs a concern about Tye’s naturalized semantics. The rest of the paper focuses on the PANIC theory, in particular the use it makes of “nonconceptual content”.1 Philosophical Studies 113: 261–274, 2003. © 2003 Kluwer Academic Publishers. Printed in the Netherlands. 262..

Soc. …I speak of what I scarcely understand; but the soul when thinking appears to me to be just talking—asking questions of herself and answering them, affirming and denying. And when she has arrived at a decision, either gradually or by a sudden impulse, and has at last agreed, and does not doubt, this is called her opinion. I say, then, that to form an opinion is to speak, and opinion is a word spoken,—I mean, to oneself and in silence, not aloud or to another: What think you? Theaet. I agree.

G&S describe the radical neuron doctrine in a number of slightly different ways, and we think this hides an important distinction. On the one hand, the radical neuron doctrine is supposed to have the consequence "that a successful theory of the mind will make no reference to anything like the concepts of linguistics or the psychological sciences as we currently understand them", and so Chomskyan linguistics "is doomed from the beginning" (sect. 2.2.2, paras. 2,3).[1] (Note that `a successful theory' must be read as `any successful theory', else the inference will fail.) On the other hand, the radical neuron doctrine is said to be the claim "that emergent psychological properties can be explained by low-level neurobiological properties" (sect. 2.3, para. 3). It is clear from the context that this can be more faithfully rendered as: psychological phenomena can be explained in (solely) neurobiological terms. But this formulation of the doctrine does not have the consequence just mentioned.

I know various contingent truths about my environment by perception. For example, by looking, I know that there is a computer before me; by hearing, I know that someone is talking in the corridor; by tasting, I know that the coffee has no sugar. I know these things because I have some built-in mechanisms specialized for detecting the state of my environment. One of these mechanisms, for instance, is presently transducing electromagnetic radiation (in a narrow band of wavelengths) coming from the computer and the desk on which it sits. How that mechanism works is a complicated story—to put it mildly—and of course much remains unknown. But we can at least produce more-or- less plausible sketches of how the mechanism can start from retinal irradiation, and go on to deliver knowledge of my surroundings. Moreover, in the sort of world we inhabit, specialized detection mechanisms that are causally affected by the things they detect have no serious competition—seeing the computer by seeing an idea of the computer in the divine mind, for example, is not a feasible alternative.