Externalism and Identity

The main aim of this paper is to show that there is one version of supervenience of the mental on the physical which is entailed by token-token identity (I call this version change-supervenience); and to establish that of the other better known versions of supervenience in the literature (which I call difference-supervenience), none are so entailed. One consequence of this is that Burge's thought experiments while successful in refutingdifference-supervenience cannot in themselves refute identity thesis. However, the introduction of change supervenience leads me to devise an analogous thought experiment against change-supervenience, thus refuting identity thesis as well.     

The word of others

Tyler Burge has argued that one has an a priori prima facie entitlement to believe in the truth of what one takes to have been presented as true by an interlocutor. This thesis, however, is problematic, since the alleged a priori prima facie entitlement to believe in the truth of our seeming understanding of things presented as true to us, rests on the possibility of determining assertoric force on a purely intellectual basis. This thesis is not plausible and Burge's analogy from memory does not support it. Two routes for defending Burge's thesis of the a priori prima facie entitlement to believe in the truth of what has been asserted can be identified: the Transcendental Route and the Intrinsic Rationality Route. David Lewis' account of linguistic convention would serve as a transcendental argument for the a priori prima facie entitlement to believe in the truth of what has been asserted, but flaws in Lewis' theory leave us deprived of any good transcendental argument for such an entitlement. The Intrinsic Rationality Route is in better standing, but we have yet to see an argument for why we should resort to that measure.     

Conceptual Errors and Social Externalism

Åsa Maria Wikforss has proposed a response to Burge's thought experiments in favour of social externalism, one which allows the individualist to maintain that narrow content is truth–conditional without being idiosyncratic. The narrow aim of this paper is to show that Wikforss' argument against social externalism fails, and hence that the individualist position she endorses is inadequate. The more general aim is to attain clarity on the social externalist thesis. Social externalism need not rest, as is typically thought, on the possibility of incomplete linguistic understanding or conceptual error. I identify the unifying principle that underlies the various externalist thought–experiments.     

The Knowledge Argument, Abilities, And Metalinguistic Beliefs

In this paper I discuss a variant of the knowledge argument which is based upon Frank Jackson's Mary thought experiment. Using this argument, Jackson tries to support the thesis that a purely physical – or, put generally: an objectively scientific – perspective upon the world excludes the important domain of `phenomenal' facts, which are only accessible introspectively. Martine Nida-Rümelinhas formulated the epistemological challenge behind the case of Mary especially clearly. I take her formulation of the problem as a starting-point and present a solution which is based solely on the concepts of capability and of metalinguistic beliefs. References to epiphenomenal facts, phenomenal knowledge etc. will be avoided completely. I specify my proposal against the backdrop of Burge's critical reflections about metalinguistic reinterpretation of expressions of belief and the externalist thesis held by Burge, Putnam and others that meanings and mental states are dependent upon the environment. My solution is then compared with Lewis' and Nemirow's ability objection. Finally I argue that the much discussed ``knowing what it is like' has in its ordinary meaning nothing much to do with `phenomenal knowledge' or knowledge of `epiphenomenal' facts.     

Externalism and Memory

Paul Boghossian has put forward an influential argument against Tyler Burge's account of basic self-knowledge. The argument focuses on the relation between externalism about mental content and memory. In this paper, I attempt to analyze and answer Boghossian's argument.     

Social Externalism and Conceptual Errors

I offer a defence of individualism by critically examining the preconditions of Tyler Burge's famous thought-experiment involving the concept of arthritis. I argue that the thought-experiment relies on a problematic notion of conceptual error, one of which Burge himself should be critical, given his Quinean commitments. Once this misstep in the experiment is made explicit, individualism emerges as a much stronger position than it is usually taken to be. Questioning the assumption that the patient uttering 'I have arthritis in my thigh' makes a conceptual error makes it possible for the individualist to grant Burge the claim that the patient has the standard concept of arthritis, rather than his own deviant concept, and yet avoid the social externalist conclusions.     

The reticence of visual phenomenal character: A spatial interpretation of transparency

It is often claimed that the phenomenal character of visual experience is ‘transparent’ in that the phenomenal features of visual experience do not seem ‘mental’. It is then claimed that this transparency speaks in favour of some theories of experience while speaking against others. In this paper, I advance both a negative and a positive thesis about transparency. My negative thesis is that visual phenomenal character is reticent in that it does not reveal whether it is mental or non-mental in nature. This, in turn, means that, by itself, transparency does not speak in favour of (and against) the theories it is often thought to speak in favour of (and against). My positive thesis is that the phenomenon referred to as the ‘transparency’ of visual phenomenal character is best characterized in spatial, not mental, terms.     

Externalism and Incomplete Understanding

Sarah Sawyer has challenged my claim that social externalism depends on the assumption that individuals have an incomplete grasp of their own concepts. Sawyer denies that Burge's later sofa thought-experiment relies on this assumption: the unifying principle behind the thought-experiments supporting social externalism, she argues, is just that referents play a role in the individuation of concepts. I argue that Sawyer fails to show that social externalism need not rely on the assumption of incomplete understanding. To establish the content externalist conclusions, further considerations are required, and these do commit the externalist to the assumption of incomplete understanding.     

Does the Phenomenality of Perceptual Experience Present an Obstacle to Phenomenal Externalism?

Although Externalism is widely accepted as a thesis about belief, as a thesis about experience it is both controversial and unpopular. One potential explanation of this difference involves the phenomenality of perceptual experience—perhaps there is something about how perceptual experiences seem that straightforwardly speaks against Externalist accounts of their individuation conditions. In this paper, I investigate this idea by exploring the role that the phenomenality of color experience plays in a prominent argument against Phenomenal Externalism: Ned Block's Inverted Earth Argument. In the course of carrying out this investigation, I will show that challenging Phenomenal Externalism on phenomenological grounds is not as straightforward a task as it is commonly assumed to be.     

Quantification and Realism*

This paper argues for the thesis that, roughly put, it is impossible to talk about absolutely everything. To put the thesis more precisely, there is a particular sense in which, as a matter of semantics, quantifiers always range over domains that are in principle extensible, and so cannot count as really being ‘absolutely everything’. The paper presents an argument for this thesis, and considers some important objections to the argument and to the formulation of the thesis. The paper also offers an assessment of just how implausible the thesis really is. It argues that the intuitions against the thesis come down to a few special cases, which can be given special treatment. Finally, the paper considers some metaphysical ideas that might surround the thesis. Particularly, it might be maintained that an important variety of realism is incompatible with the thesis. The paper argues that this is not the case.     

M. Chirimuuta's Adverbialism about Color

M. Chirimuuta's Outside Color is a rich and lovely book. I enjoyed reading it and benefitted from reflecting on its provocative ideas. I begin by briefly placing the book's principal thesis in its historical context, and I go on to reflect on two objections that might be lodged against this thesis.     

Perceptual Content Defended

Recently, the thesis that experience is fundamentally a matter of representing the world as being a certain way has been questioned by austere relationalists. I defend this thesis by developing a view of perceptual content that avoids their objections. I will argue that on a relational understanding of perceptual content, the fundamental insights of austere relationalism do not compete with perceptual experience being representational. As it will show that most objections to the thesis that experience has content apply only to accounts of perceptual content on which perceptual relations to the world play no explanatory role. With austere relationalists, I will argue that perceptual experience is fundamentally relational. But against austere relationalists, I will argue that it is fundamentally both relational and representational.     

MATHEMATICAL EXPLANATION AND INDISPENSABILITY ARGUMENTS

We defend Joseph Melia's thesis that the role of mathematics in scientific theory is to 'index' quantities, and that even if mathematics is indispensable to scientific explanations of concrete phenomena, it does not explain any of those phenomena. This thesis is defended against objections by Mark Colyvan and Alan Baker.     

Memory, Anaphora, and Content Preservation

Tyler Burge defends the idea that memory preserves beliefswith their justifications, so that memory's role in inferenceadds no new justificatory demands. Against Burge's view,Christensen and Kornblith argue that memory is reconstructiveand so introduces an element of a posteriori justificationinto every inference. I argue that Burge is right,memory does preserve content, but to defend this viewwe need to specify a preservative mechanism. Toward thatend, I develop the idea that there is something worthcalling anaphoric thinking, which preserves content inBurge's sense of ``content preservation.' I providea model on which anaphoric thought is a fundamentalfeature of cognitive architecture, consequentlyrejecting the idea that there are mental pronounsin a Language of Thought. Since preservativememory is a matter of anaphoric thinking, thereare limits on the analogy of memory and testimony.     

The cognitive impenetrability of the content of early vision is a necessary and sufficient condition for purely nonconceptual content

I elaborate on Pylyshyn's definition of the cognitive impenetrability (CI) of early vision, and draw on the role of concepts in perceptual processing, which links the problem of the CI or cognitive penetrability (CP) of early vision with the problem of the nonconceptual content (NCC) of perception. I explain, first, the sense in which the content of early vision is CI and I argue that if some content is CI, it is conceptually encapsulated, that is, it is NCC. Then, I examine the definitions of NCC and argue that they lead to the view that the NCC of perception is retrieved in a stage of visual processing that is CI. Thus, the CI of a state and content is a sufficient and necessary condition for the state and its content to be purely NCC, the CI?≡?NCC thesis. Since early vision is CI, the purely NCC of perception is formed in early vision. I defend the CI?≡?NCC thesis by arguing against objections raised against both the sufficient and the necessary part of the thesis.     

Libertarianism and agentive experience

Libertarianism about free will conjoins the thesis that free will requires indeterminism with the thesis that we have free will. Here the claim that we have experiential evidence for the libertarian position is assessed. It is argued that, on a straightforward reading, the claim is false, for our experiences as agents don't support the claim that free will requires indeterminism. However, our experiences as agents may still have a role to play in an overall case for libertarianism, insofar as they give us some (defeasible) reason to think that we have free will. This latter claim is defended against a pair of objections that have been leveled against it.     

Realismbei Frege: Reply to Burge

Frege is celebrated as an arch-Platonist and arch-realist. He is renowned for claiming that truths of arithmetic are eternally true and independent of us, our judgments and our thoughts; that there is a third realm containing nonphysical objects that are not ideas. Until recently, there were few attempts to explicate these renowned claims, for most philosophers thought the clarity of Frege's prose rendered explication unnecessary. But the last ten years have seen the publication of several revisionist interpretations of Frege's writings — interpretations on which these claims receive a very different reading. In Frege on Knowing the Third Realm, Tyler Burge attempts to undermine this trend. Burge argues that Frege is the very Platonist most have thought him — that revisionist interpretations of Frege's Platonism, mine among them, run afoul of the words on Frege's pages. This paper is a response to Burge's criticisms. I argue that my interpretation is more faithful than Burge's to Frege's texts.     

Moral Overridingness and Moral Theory

I begin by proposing and explicating a plausible articulation of the view that morality is overriding. I then argue that it would be desirable for this thesis to be sustained. However, the prospects for its vindication will depend crucially on which moral theory we adopt. I examine some schematic moral theories in order to bring out which are friendly and which unfriendly to moral overridingness. In light of the reasons to hope that the overridingness thesis can be sustained, theories apparently incompatible with it – I argue that consequentialism is one – have a count against them.     

THE EXTENDED MIND

The extended mind is the thesis that some mental—typically cognitive—processes are partly composed of operations performed by cognizing organisms on the world around them. The operations in question are ones of manipulation, transformation, or exploitation of environmental structures. And the structures in question are ones that carry information pertinent to the success or efficacy of the cognitive process in question. This essay examines the thesis of the extended mind and evaluates the arguments for and against it.