Our paper consists of three parts. In the first part we provide an overall picture of the concept of the Cartesian mind. In the second, we outline some of the crucial tenets of the theory of the embodied mind and the main objections it makes to the concept of the Cartesian mind. In the third part, we take aim at the heart of the theory of the embodied mind; we present three examples which show that the thesis of embodiment of (...) the subjective perspective is an untenable position. However, everything these examples testify to can be accommodated and explained by our non-embodied or Cartesian view. (shrink)

It is widely held that introspection-based self-ascriptions of mental states are immune to error through misidentification , relative to the first person pronoun. Many have taken such errors to be logically impossible, arguing that the immunity holds as an “absolute” necessity. Here I discuss an actual case of craniopagus twins—twins conjoined at the head and brain—as a means to arguing that such errors are logically possible and, for all we know, nomologically possible. An important feature of the example is that (...) it is one where a person may be said to be introspectively aware of a mental state that occurs outside of her own mind. Implications are discussed for views of the relation between introspection and mental state ownership, and between introspection and epistemic criteria for the “mark of the mental.”. (shrink)

Strawson developed his descriptive metaphysics in close relation to Kant’s metaphysics of experience which can be understood as a particular version of descriptive metaphysics. At the same time, Strawson rejects the foundations of Kant’s version of descriptive metaphysics which, according to him, is a species of psychology. His argument against Kant’s conception of subject, or of the ‘I’, can be found in his conception of person. A closer scrutiny of this conception of Strawson can, however, reveal that it is not (...) comprehensive enough compared with that of Kant. Speaking with Kant, Strawson understands the part of being ‘I’ which can be known via self-knowledge but he fails to appreciate the second part of being ‘I’, namely self-consciousness. A comparison of Strawson’s conception with Kant’s conception of being ‘I’ reveals its systematic shortcomings that rather support, against Strawson’s purpose, Kant’s version of descriptive metaphysics as a theory of subjectivity. (shrink)

This essay argues that nonlinguistic animals qualify not just for externalist notions of rationality (maximizing biological fitness or utility), but also for internal ones. They can act for reasons in several senses: their behaviour is subject to intentional explanations, they can act in the light of reasonsprovided that the latter are conceived as objective facts rather than subjective mental statesand they can deliberate. Finally, even if they could not, it would still be misguided to maintain that animals are capable only (...) of (mechanical) behaviour, not of (intentional) action. (shrink)

This paper presents an account of empathy as the form of experience directed at embodied unities of expressive movement. After outlining the key differences between simulation theory and the phenomenological approach to empathy, the paper argues that while the phenomenological approach is closer to respecting a necessary constitutional asymmetry between first-personal and second-personal senses of embodiment, it still presupposes a general concept of embodiment that ends up being problematic. A different account is proposed that is neutral on the explanatory role (...) of the first-person sense of embodiment, which leads to an emphasis on the transformative nature of empathy and a broadening of the scope of possible targets of empathic awareness. (shrink)

Wittgenstein’s writings and lectures during the first half of the 1930s play a crucial role in any interpretation of the relationship between the Tractatus and the Philosophical Investigations . G. E. Moore’s notes of Wittgenstein’s Cambridge lectures, 1930-1933, offer us a remarkably careful and conscientious record of what Wittgenstein said at the time, and are much more detailed and reliable than previously published notes from those lectures. The co-authors are currently editing these notes of Wittgenstein’s lectures for a book to (...) be published by Cambridge University Press. We describe the materials that make up Moore’s notes, explain their unique value, review the principal editorial challenges that these materials present, and provide a brief outline of our editorial project. (shrink)

I lay out the framework for my theory of sensory imagination in “Imagining as a guide to possibility.” Sensory imagining involves mental imagery , and crucially, in describing the content of imagining, I distinguish between qualitative content and assigned content. Qualitative content derives from the mental image itself; for visual imaginings, it is what is “pictured.” For example, visually imagine the Philadelphia Eagles defeating the Pittsburgh Steelers to win their first Super Bowl. You picture the greenness of the field and (...) the football’s brown oblong shape. Some of what you imagine isn’t explicitly pictured, however. That it is Sunday, that it is the Super Bowl: these facts are assigned. (shrink)

Many contributors of the debate about knowledge by testimony concentrate on the problem of justification. In my paper I will stress a different point – the concept of testimony itself. As a starting point I will use the definitional proposal of Jennifer Lackey. She holds that the concept of testimony should be regarded as entailing two aspects – one corresponding to the speaker, the other one to the hearer. I will adopt the assumption that we need to deal with both (...) aspects. Nevertheless, I will show that her concept – which suggests regarding testimony as an act of communication conveying information – is too broad and, therefore, I will end up with a different twofold definition. (shrink)

This book is both an introduction to and a research work on Meinongianism. “Meinongianism” is taken here, in accordance with the common philosophical jargon, as a general label for a set of theories of existence – probably the most basic notion of ontology. As an introduction, the book provides the first comprehensive survey and guide to Meinongianism and non-standard theories of existence in all their main forms. As a research work, the book exposes and develops the most up-to-date Meinongian theory (...) (called modal Meinongianism), applies it to specific fields, and discusses its open problems. Part I of the book provides a historical introduction to, and critical discussion of, the dominant philosophical view of existence: the “Kantian-Fregean-Quinean” perspective. Part II is the full-fledged introduction to the Meinongian theories of existence as a real property of individuals: after starting with the so-called naïve Meinongian conception and its problems, it provides a self-contained presentation of the main neo-Meinongian proposals, and a detailed discussion of their strengths and weaknesses. Part III develops a specific neo-Meinongian theory of existence employing a model-theoretic semantic framework. It discusses its application to the ontology and semantics of fictional objects, and its open problems. The methodology of the book follows the most recent trends in analytic ontology. In particular, the meta-ontological point of view is largely privileged. (shrink)

Abstract The rise of social neuroscience has brought the second-person perspective back into the focus of philosophy. Although this is not a new topic, it is certainly less well understood than the first-person and third-person perspectives, and it is even unclear whether it can be reduced to one of these perspectives. The present paper argues that no such reduction is possible because the second-person perspective provides a unique kind of access to certain facts, namely other persons' mental states, particularly, but (...) not only, in social contexts. The paper starts with the idea that perspectives are ways of epistemic access that determine an epistemic subject's recognition of a certain object. While the first-person perspective is subjective because it is based on, and directed at, the epistemic subject's experiences, the third-person perspective, which is based on objective evidence and gives access to all kinds of entities, is objective. The second-person perspective, by contrast, is intersubjective because it is a relation between an epistemic subject and another sentient being's mental states. It involves the epistemic subject's replication of those states, a basic self/other distinction and a basic awareness of the relevant situational differences between the epistemic subject and the other being. This is why the second-person perspective is a perspective on a perspective, which involves a basic awareness of perspectivalness, even if second-person perspective taking may be subpersonal to a large extent. (shrink)

Inferentialism is the conviction that to be meaningful in the distinctively human way, or to have a 'conceptual content', is to be governed by a certain kind of inferential rules. The term was coined by Robert Brandom as a label for his theory of language; however, it is also naturally applicable (and is growing increasingly common) within the philosophy of logic.

Self-consciousness can be defined as the ability to think 'I'-thoughts. Recently, it has been suggested that self-consciousness in this sense can (and should) be accounted for in terms of nonconceptual forms of self-representation. Here, I will argue that while theories of nonconceptual self-consciousness do provide us with important insights regarding the essential genetic and epistemic features of self-conscious thought, they can only deliver part of the full story that is required to understand the phenomenon of self-consciousness. I will provide two (...) arguments to this effect, drawing on insights from the philosophy of language and on structural differences between conceptual and nonconceptual forms of representation. Both arguments rest on the intuition that while self-consciousness requires explicit self-representation, nonconceptual content can at best provide implicit self-related information. I will conclude that in order to explain the emergence of self-conscious thought out of more basic forms of representations one has to explain the transition between implicit self-related information and explicit self-representation. (shrink)

I argue that Stroud's nonreductionism about meaning is insufficiently motivated. First, given that he rejects the assumption that grasp of an expression's meaning guides or instructs us in its use, he has no reason to accept Kripke's arguments against dispositionalism or related reductive views. Second, his argument that reductive views are impossible because they attempt to explain language “from outside” rests on an equivocation between two senses in which an explanation of language can be from outside language. I offer a (...) partially reductive account of meaning which appeals both to speakers’ dispositions to produce and respond to utterances in naturalistically specifiable ways, and to the normative attitudes they adopt, in so doing, to their own behavior. This account is supported, I argue, by Stroud's early treatment of Wittgenstein's rule-following considerations and in particular of the agreement in primitive judgments or reactions which Wittgenstein takes to be required for linguistic communication. (shrink)

Questions about the relationship between linguistic competence and expertise will be examined in the paper. Harry Collins and others distinguish between ubiquitous and esoteric expertise. Collins places considerable weight on the argument that ordinary linguistic competence and related phenomena exhibit a high degree of expertise. His position and ones which share close affinities are methodologically problematic. These difficulties matter because there is continued and systematic disagreement over appropriate methodologies for the empirical study of expertise. Against Collins, it will be argued (...) that the term ‘expertise’ should be reserved for expertise (esoteric experts) and exclude everyday performance (ubiquitous experts). Wittgensteinian ideas will be employed to maintain that it is mistaken and misleading to derive substantive conclusions about the epistemology of expertise from ordinary linguistic competence and vice versa. Significant attention will be devoted to the notion of following a rule with particular reference to the intelligibility of tacit rule following. A satisfactory theoretical approach to expertise should not involve making important claims about ordinary linguistic competence. (shrink)

Genes are often described by biologists using metaphors derived from computa- tional science: they are thought of as carriers of information, as being the equivalent of ‘‘blueprints’’ for the construction of organisms. Likewise, cells are often characterized as ‘‘factories’’ and organisms themselves become analogous to machines. Accordingly, when the human genome project was initially announced, the promise was that we would soon know how a human being is made, just as we know how to make airplanes and buildings. Impor- tantly, (...) modern proponents of Intelligent Design, the latest version of creationism, have exploited biologists’ use of the language of information and blueprints to make their spurious case, based on pseudoscientific concepts such as ‘‘irreducible complexity’’ and on flawed analogies between living cells and mechanical factories. However, the living organ- ism = machine analogy was criticized already by David Hume in his Dialogues Concerning Natural Religion. In line with Hume’s criticism, over the past several years a more nuanced and accurate understanding of what genes are and how they operate has emerged, ironically in part from the work of computational scientists who take biology, and in particular developmental biology, more seriously than some biologists seem to do. In this article we connect Hume’s original criticism of the living organism = machine analogy with the modern ID movement, and illustrate how the use of misleading and outdated metaphors in science can play into the hands of pseudoscientists. Thus, we argue that dropping the blueprint and similar metaphors will improve both the science of biology and its understanding by the general public. (shrink)

Shaun Gallagher has actively looked into the possibility that psychopathologies involving “thought insertion” might supply a counterexample to the Cartesian principle according to which one can always recognize one’s own thoughts as one’s own. Animated by a general distrust of a priori demonstrations, Gallagher is convinced that pitting clinical cases against philosophical arguments is a worthwhile endeavor. There is no doubt that, if true, a falsification of the immunity to error through misidentification would entail drastic revisions in how we conceive (...) the boundary between self and other. However, I argue that (1) the idea of unearthing an exception to the Cartesian thesis is, on further reflection, not a realistic prospect and that (2) this casts doubt on the attempt to conjoin first-person phenomenology and third-person cognitive science in the service of philosophical debates. (shrink)

Dans ce texte j'aborderai presque exclusivement la question de savoir si le pronom personnel «je» est un terme référentiel ou non. Il s'agit en définitive de savoir si le pronom en question est une expression qui désigne quelque chose et, si oui, de spécifier la nature du référent en question. En un mot, je me propose ici d'analyser le comportement sémantique du pronom «je».

This paper offers a critique of a central psychopathological concept, the notion of "poor reality-testing. "Using ideas from the philosopher Ludwig Wittgenstein, I consider the nature of delusions in schizophrenia, largely through examining Daniel Paul Schreber's famous Memoirs of My Nervous Illness. Many schizophrenic individuals do not in fact mistake their fantasies for reality, as is traditionally assumed. Rather, I argue, they engage in a solipsistic mode of experience, a felt subjectivization of the lived world that is associated with a (...) stance of passivity and hyperconsciousness. I discuss the existential conditions and consequences of this stance and show that certain anomalous or paradoxical features of schizophrenic delusion are explicable on this phenomenological account. (shrink)

This paper examines the philosophical substructure to the theoretical conflicts that permeate contemporary mental health care in the UK. Theoretical conflicts are treated here as those that arise among practitioners holding divergent theoretical orientations towards the phenomena being treated. Such conflicts, although steeped in history, have become revitalized by recent attempts at integrating mental health services that have forced diversely trained practitioners to work collaboratively together, often under one roof. Part I of this paper examines how the history of these (...) conflicts can be understood as a tension between, on the one hand, the medical model and its use by the dominant profession of psychiatry, and on the other, those alternative models and practitioners in some way differentiated from the medical model camp. Examples will be given from recent policy and research to highlight the prevalence of this tension in contemporary practice. Part II of this paper explores the deeper commonalities that lay beneath the theoretical conflict outlined in Part I. These commonalities will be shown to be apart of a captivating framework that has continued to grip the conflict since its inception. By exposing this underlying framework--and the motivations inherent therein--the topic of integration appears in wholly different light, allowing a renewed philosophical basis for integration to emerge. (shrink)

The purpose of this paper is twofold: (1) to clarify Ludwig Wittgenstein’s thesis that colours possess logical structures, focusing on his ‘puzzle proposition’ that “there can be a bluish green but not a reddish green”, (2) to compare modeltheoretical and gametheoretical approaches to the colour exclusion problem. What is gained, then, is a new gametheoretical framework for the logic of ‘forbidden’ (e.g., reddish green and bluish yellow) colours. My larger aim is to discuss phenomenological principles of the demarcation of the (...) bounds of logic as formal ontology of abstract objects. (shrink)

The paper defends the argument that the Resemblance Paradox (RP), or the problem of the ‘under-determination of meaning’, and the Rule-Following Paradox (RFP) are two sides of the same paradox threatening meaning from opposite extremes. After presenting the case, the paradox is reconsidered anew and the supposition that the threat is a pervasive one is challenged.

Recently there has been interest in examining how language is involved in the phenomenon of ‘manipulation’. This paper suggests that investigators, rather than treating ‘manipulation’ as an entity, should examine how communicators might engage in discursive acts of manipulating. To this end a distinction is made between manipulating information and manipulating people. Examples of both types, taken from the Portuguese Parliamentary Celebration of the April Revolution of 2004, are examined in depth to show how acts of manipulating can be performed (...) in different ways. By focussing on acts, we show that supposed ‘cognitive control’ over the audience's minds is not necessarily involved in manipulating; it is shown how investigators can provide evidence that manipulators act ‘knowingly’ when they mislead. We argue that the study of manipulating, and the distinction between manipulating information and people, provides a critical approach to the topic of political oratory. (shrink)

This essay argues that non-linguistic animals qualify not just for externalist notions of rationality (maximizing biological fitness or utility), but also for internal ones. They can act for reasons in several senses: their behaviour is subject to intentional explanations, they can act in the light of reasons - provided that the latter are conceived as objective facts rather than subjective mental states - and they can deliberate. Finally, even if they could not, it would still be misguided to maintain that (...) animals are capable only of (mechanical) behaviour, not of (intentional) action. (shrink)

A fallibilist theory of knowledge is employed to make sense of the idea that agents know what they are doing 'without observation' (as on Anscombe's theory of practical knowledge).

(No abstract is available for this citation).

The debate on structuralism in the philosophy of mathematics has brought into focus a question about the status of meta-mathematics. It has been raised by Shapiro (2005), where he compares the ongoing discussion on structuralism in category theory to the Frege-Hilbert controversy on axiomatic systems. Shapiro outlines an answer according to which meta-mathematics is understood in structural terms and one according to which it is not. He finds both options viable and does not seem to prefer one over the other. (...) The present paper reconsiders the nature of the formulae and symbols meta-mathematics is about and finds that, contrary to Charles Parsons' influential view, meta-mathematical objects are not "quasi-concrete". It is argued that, consequently, structuralists should extend their account of mathematics to meta-mathematics. (shrink)

Kiinnostukseni kohteena seuraavassa on tietty suosittu ”intellektualistinen” käsitys kielen ja käsitteiden oppimisesta ja ymmärtämisestä. Käsitys on sinällään hyvin periteinen, ja voidaan väittää, että se on ollut ainakin piilevästi sisäänrakennettuna useiden uuden ajan filosofien teorioissa. Jätän tämän väitteen tarkemman erittelyn kuitenkin filosofian historioitsijoiden selvitettäväksi, ja keskityn seuraavassa käsityksen enemmän tai vähemmän julkilausuttuihin ilmentymiin nykyajan filosofiassa. Se on vaikuttanut monissa vaikutusvaltaisissa lähestymistavoissa kieleen, merkitykseen ja mieleen.

On the phenomenological view, a minimal form of self-consciousness is a constant structural feature of conscious experience. Experience happens for the experiencing subject in an immediate way and as part of this immediacy, it is implicitly marked as my experience. For the phenomenologists, this immediate and first-personal givenness of experiential phenomena must be accounted for in terms of a pre-reflective self-consciousness. In the most basic sense of the term, selfconsciousness is not something that comes about the moment one attentively inspects (...) or reflectively introspects one's experiences, or in the instant of self-recognition of one's image in the mirror, or in the proper use of the first-person pronoun, or in the construction of a self-narrative. Rather, these different kinds of self-consciousness are to be distinguished from the pre-reflective self-consciousness which is present whenever I am living through or undergoing an experience, i.e., whenever I am consciously perceiving the world, whenever I am thinking an occurrent thought, whenever I am feeling sad or happy, thirsty or in pain, and so forth. (shrink)

In this article I critique Kathleen Slaney and Michael Maraun’s (2005) addition to the ongoing philosophical charge that neuroscientific writing often transgresses the bounds of sense. While they sometimes suggest a minimal, cautious thesis–that certain usage can generate confusion and in some cases has–they also bandy about charges of meaninglessness, conceptual confusion, and nonsense freely. These charges rest on the premise that terms have specific correct usages that correspond with Slaney and Maraun’s sense of everyday linguistic practice. I challenge this (...) premise. I argue that they have not shown that there are such specific correct usages; and, further, that even if they had, they fail to justify that their definitions are the correct ones. (shrink)

Frege ridiculed the formalist conception of mathematics by saying that the formalists confused the unimportant thing, the sign, with the important, the meaning. Surely, one wishes to say, mathematics does not treat of dashes on a bit of paper. Frege’s idea could be expressed thus: the propositions of mathematics, if they were just complexes of dashes, would be dead and utterly uninteresting, whereas they obviously have a kind of life. And the same, of course, could be said of any proposition: (...) Without a sense, or without the thought, a proposition would be an utterly dead and trivial thing. And further it seems clear that no adding of inorganic signs can make the proposition live. And the conclusion which one draws from this is that what must be added to the dead signs in order to make a live proposition is something immaterial, with properties different from all mere signs. But if we had to name anything which is the life of the sign, we should have to say that it was its use. (Blue Book, p. (shrink)

This article addresses a classical question: Can a machine use language meaningfully and if so, how can this be achieved? The first part of the paper is mainly philosophical. Since meaning implies intentionality on the part of the language user, artificial systems which obviously lack intentionality will be `meaningless'. There is, however, no good reason to assume that intentionality is an exclusively biological property and thus a robot with bodily structures, interaction patterns and development similar to those of human beings (...) would constitute a system possibly capable of meaning – a conjecture supported through a Wittgenstein-inspired thought experiment. The second part of the paper focuses on the empirical and constructive questions. Departing from the principle of epigenesis stating that during every state of development new structure arises on the basis of existing structure plus various sorts of interaction, a model of human cognitive and linguistic development is proposed according to which physical, social and linguistic interactions between the individual and the environment have their respective peaks in three consecutive stages of development: episodic, mimetic and symbolic. The transitions between these stages are qualitative, and bear a similarity to the stages in phylogenesis proposed by Donald and Deacon. Following the principle of epigenetic development, robotogenesis could possibly recapitulate ontogenesis, leading to the emergence of intentionality, consciousness and meaning. (shrink)

Since the publication of the Philosophical Investigations in 1953, Wittgenstein''s later philosophy of mind has been the subject of numerous books and articles. Although most commentators agree that Wittgenstein was neither a behaviorist nor a Cartesian dualist, many continue to ascribe to him a position that strongly resembles one of the alternatives. In contrast, this paper argues that Wittgenstein was strongly opposed to behaviorism and Cartesianism, and that he was concerned to show that these positions implicitly share a problematic assumption. (...) This assumption is a seemingly innocent idea that subjectivity, or mind, is some kind of object or thing. The paper provides a detailed survey of Wittgenstein''s critique of Cartesianism and behaviorism, as well as an outline of Wittgenstein''s alternative account of subjectivity. (shrink)

One reason why the problem of other minds keeps cropping up in modern philosophy is that we seem to have conflicting intuitions about our access to the mental lives of others. On the one hand, we are inclined to think that it is wrong to claim, like Cartesian dualists must, that the minds of others are essentially inaccessible to direct experience. But on the other hand we feel that it is equally wrong to claim, like the behaviorists, that the mental (...) lives of others are completely accessible to an outside spectator. This paper attempts to address the problem of the accessibility of other minds while staying faithful to both these intuitions. Central to this undertaking is the idea that we express our mental lives in our bodily behavior. With a firm grasp of the notion of expression, as it is developed in the writings of Wittgenstein and Levinas, we can understand how other minds can be directly perceivable and yet retain a certain inaccessibility. The key is to emphasize the difference between the expressive appearance of a human being and the way an object appears in perception. (shrink)

The German physicist Heinrich Hertz played a decisive role for Wittgenstein's use of a unique philosophical method. Wittgenstein applied this method successfully to critical problems in logic and mathematics throughout his life. Logical paradoxes and foundational problems including those of mathematics were seen as pseudo-problems requiring clarity instead of solution. In effect, Wittgenstein's controversial response to David Hilbert and Kurt Gödel was deeply influenced by Hertz and can only be fully understood when seen in this context. To comprehend the arguments (...) against the metamathematical programme, and to appreciate how profoundly the philosophical method employed actually shaped the content of Wittgenstein's philosophy, it is necessary to make an intellectual biographical reconstruction of their philosophical framework, tracing the Hertzian elements in the early as well as in the later writings. In order to write Wittgenstein's biography, we have to take seriously the coherence of his thought throughout his life, and not let convenient philosophical ideologies be our guidance in drawing up a “Wittgensteinian philosophy”. To do so, we have to take a second look upon what he actually wrote, not only in the already published material, but in the entire Nachlass. Clearly, this is not easily done, but it is a necessary task in the historical reconstruction of Wittgenstein's life and work. (shrink)

New Volitionalism is a name for certain widespread conception of the nature of intentional action. Some of the standard arguments for New Volitionalism, the so-called arguments from total failure, have even acquired the status of basic assumptions for many other kinds of philosophers. It is therefore of singular interest to investigate some of the most important arguments from total failure. This is what I propose to do in this paper. My aim is not be to demonstrate that these arguments are (...) inconsistent or that total failure and naked tryings are metaphysically impossible. Rather, my aim is be to build a case against the possibility of naked, independently existing tryings, by questioning how well we understand the scenarios invoked in their favour. Thus, rather than attempting to present a definitive metaphysical refutation of New Volitionalism, I attempt to diminish or demolish its underlying motivation. (shrink)

This article aims at elucidating the logic of Arist. SE 22, 178b36–179a10 and, in particular, of the sophism labelled "Third Man" discussed in it. I suggest that neither the sophistic Walking Man argument, proposed by ancient commentators, nor the Aristotelian Third Man of the , suggested by modern interpreters, can be identified with the fallacious argument Aristotle presents and solves in the passage. I propose an alternative reconstruction of the Third Man sophism and argue that an explanation of the lines (...) regarding the identity of Coriscus and Coriscus the musician (178b39–179a3) is indispensable for its correct understanding, since they hint at another sophism in some important aspects analogous. Finally, I show that two contradictions concerning spotted by scholars in the passage are only apparent and can be dissolved once the assumption that the anti-Platonic Third Man argument is at stake here is discarded, and once the passage is read in the light of its agonistic context. (shrink)

Alan Turing anticipated many areas of current research incomputer and cognitive science. This article outlines his contributionsto Artificial Intelligence, connectionism, hypercomputation, andArtificial Life, and also describes Turing's pioneering role in thedevelopment of electronic stored-program digital computers. It locatesthe origins of Artificial Intelligence in postwar Britain. It examinesthe intellectual connections between the work of Turing and ofWittgenstein in respect of their views on cognition, on machineintelligence, and on the relation between provability and truth. Wecriticise widespread and influential misunderstandings of theChurch–Turing thesis (...) and of the halting theorem. We also explore theidea of hypercomputation, outlining a number of notional machines thatcompute the uncomputable. (shrink)

Given (1) Wittgensteins externalist analysis of the distinction between following a rule and behaving in accordance with a rule, (2) prima facie connections between rule-following and psychological capacities, and (3) pragmatic issues about training, it follows that most, even all, future artificially intelligent computers and robots will not use language, possess concepts, or reason. This argument suggests that AIs traditional aim of building machines with minds, exemplified in current work on cognitive robotics, is in need of substantial revision.

My paper examines the popular idea, defended by Kripke, that meaning is an essentially normative notion. I consider four common versions of this idea and suggest that none of them can be supported, either because the alleged normativity has nothing to do with normativity or because it cannot plausibly be said that meaning is normative in the sense suggested. I argue that contrary to received opinion, we don’t need normativity to secure the possibility of meaning. I conclude by considering the (...) repercussions of rejecting semantic normativity on three central issues: justification, communication, and naturalism. (shrink)

In this chapter, I shall be examining an argument for the language of thought hypothesis.

In this paper I outline and defend an introspectionist account of authoritative self-knowledge for a certain class of cases, ones in which a subject is both thinking and thinking about a current, conscious thought. My account is distinctive in a number of ways, one of which is that it is compatible with the truth of externalism.