Online research in philosophy

This paper advocates explicitness about the type of entity to be considered as content- bearing in connectionist systems; it makes a positive proposal about how vehicles of content should be individuated; and it deploys that proposal to argue in favour of representation in connectionist systems. The proposal is that the vehicles of content in some connectionist systems are clusters in the state space of a hidden layer. Attributing content to such vehicles is required to vindicate the standard explanation for some classificatory networks’ ability to generalise to novel samples their correct classification of the samples on which they were trained.

A central question in contemporary epistemology concerns whether content externalism threatens a common doctrine about privileged access. If the contents of a subject.

Externalism about content is the view that the social and / or the physical environment contributes to determining the content of the beliefs of a person. The strongest argument for social externalism derives from the rule-following considerations that motivate a social theory of conceptual content. The best argument for physical externalism goes back to Putnam’s twin earth thought experiment. The aim of this paper is to point out that these two sorts of externalism give contradictory accounts of what determines the conceptual content of our beliefs and individuates them. According to physical externalism, the physical environment is sufficient to perform that task owing to suitable causal relations. According to social externalism, the conceptual content of our beliefs is determined by us owing to certain social practices. Possible strategies to reconcile both these accounts are considered.

Externalism holds, and internalism denies, that the individuation of many of an individual's mental states (e.g., thoughts about the physical world) depends necessarily on relations that individual bears to the physical and/or social environment. Many philosophers, externalists and internalists alike, believe that introspection yields knowledge of the contents of our thoughts that is direct and authoritative. It is not obvious, however, that the metaphysical claims of externalism are compatible with this epistemological thesis. Some (e.g., Burge, 1988; Falvey and Owens (F&O), 1994) have sought to dispel the worry that there is a conflict, though they admit that if such a conflict exists, it spells trouble for externalism (see, e.g., F&O, 1994, p. 108). Boghossian has argued that there is indeed a conflict between externalism and introspective knowledge of content. Surprisingly, however, he also argues that there is a conflict between internalism and introspective knowledge of content. I will defend Boghossian's claim that there is a conflict between externalism and knowledge of content, but criticize his claim that there is a conflict between internalism and knowledge of content.

Abstract: This paper introduces and analyses the doctrine of externalism about semantic content; discusses the Twin Earth argument for externalism and the assumptions behind it, and examines the question of whether externalism about content is compatible with a privileged knowledge of meanings and mental contents.

Content externalism about memory says that the individuation of memory contents depends on relations the subject bears to his past environment. I defend externalism about memory by arguing that neither philosophical nor psychological considerations stand in the way of accepting the context dependency of memory that follows from externalism.

(revisions posted 12/5/2006) to appear in Internalism and Externalism in Semantics and Epistemology, ed. by Sanford Goldberg (to be published by Oxford in 2006 or 2007) Michael McKinsey formulated an argument that raises a puzzle about the relation between externalism about content and our introspective awareness of content. The puzzle goes like this: it seems like I can know the contents of my thoughts by introspection alone; but philosophical reflection tells me that the contents of those thoughts are externalist, and so I couldn.

In everyday life, we typically explain what people do by attributing mental states such as beliefs and desires. Such mental states belong to a class of mental states that are _intentional_, mental states that have content. Hoping that Johnny will win, and believing that Johnny will win are of course rather different mental states that can lead to very different behaviour. But they are similar in that they both have the same content : what is being hoped for and believed is the very same thing. According to the thesis of externalism that has been defended most notably by Hilary Putnam and Tyler Burge, not all of the contents of our mental states are determined by our intrinsic properties. Instead, the contents of our beliefs and desires are often determined in part by our relations to the environment. They are, so to speak, "wide" contents that are "not in our heads." Although externalism is accepted by most philosophers, many have argued that mental states with wide contents must also have a kind of content wholly determined by the intrinsic properties of the individuals who are in those states. This kind of content is called "narrow content". The aim of this paper is to distinguish between three rather different motivations for postulating narrow content. I argue that, given a certain conception of narrow content that I shall explain below, none of these three motivations succeed in establishing the existence of narrow content.

At first pass, internalism about justification is the view that there is no justificatory difference without an internal difference. Externalism about mental content is the view that there are differences in mental content without an internal difference. Assuming (complete) mental contents are the primary bearers of justificatory features, the two views are in obvious tension. The goal of this paper is to determine how the tension is best resolved. The paper proceeds as follows. In §1 I explain the threat to justificatory internalism from content externalism in more detail. In §2 I present Earl Conee and Richard Feldman’s “counterpart propositions” reply to the problem of content externalism. §3 criticizes the counterpart propositions reply. §4 presents a view in the metaphysics of belief that is widely adopted by content externalists: one that appeals to vehicles of content, modes of presentation of content, or ways of believing propositions. §5 exploits this metaphysics of belief in order to better accommodate justificatory internalist insights in light of content externalism. §6 shows how the new view (‘the Vehicle View’) can be used to address problems that face Conee and Feldman’s account. Finally, §7 provides a new argument from the Vehicle View for the language of thought hypothesis.

This paper explores a new understanding of mind or mental representation by arguing that contents at the personal level are not carried by vehicles. Contentful mental states at the personal level are distinctive by virtue of their vehicle-less nature: the subpersonal physiological or functional states that are associated with and enable personal level contents cannot be understood as their vehicles, neither can the sensations or the sensory conditions associated with perceptual contents. This result is obtained by first extending the interpretationist ideas of Davidson and Dennett to show that subpersonal physiological or functional states cannot be construed as the vehicles of personal level contents. Then the anti-foundationalist arguments of Sellars are extended to show that sensory states cannot stand as vehicles to perceptual contents. The line of argumentation extended from Sellars also provides a critique of the current trend to posit non-conceptual contents.