Internalism and externalism disagree about whether agents who are internally the same can differ in their mental states. But what is it for two agents to be internally the same? Standard formulations take agents to be internally the same in virtue of some metaphysical fact, for example, that they share intrinsic physical properties. Our aim in this chapter is to argue that such formulations should be rejected. We provide the outlines of an alternative formulation on which agents are internally the (...) same in virtue of facts about their epistemic capacities. The resulting formulation is one on which internalism and externalism are views about the extent to which an agent’s mental states can vary independently of the capacity for introspective discrimination. We suggest that this epistemic formulation of internalism and externalism picks out a substantive disagreement in philosophical theorizing about the nature of the mind. (shrink)

Social externalism must allow that subjects can misunderstand the content of their own thoughts. I argue that we can exploit this commitment to create a dilemma for the view’s account of communication. To arrive at the first horn of the dilemma, I argue that, on social externalism, it is understanding which is the measure of communicative success. This would be a highly revisionary account of communication. The only way that the social externalist can salvage the claim that mental content is (...) central to explaining communicative success is by adopting an account which gives unacceptable diagnoses as to the success of communicative exchanges. This is the second horn of the dilemma. Contrastingly, certain internalist views of content, which deny that subjects share thought content, do not face the dilemma. I argue that, as such, we should prefer accounts of communication which deny that subjects speak the same language. (shrink)

Semantic externalism holds that the content of at least some of our thoughts is partly constituted by external factors. Accordingly, it leads to the unintuitive consequence that we must then often be mistaken in what we are thinking, and any kind of claim of privileged access must be given up. Those who deny that semantic externalists can retain any account of self-knowledge are ‘incompatibilists’, while those who defend the compatibility of self-knowledge with semantic externalism are ‘compatibilists’. This paper examines the (...) claim of compatibilism, focusing on Burge’s “Slow Switching Argument” and Boghossian’s “Objection of Relevant Alternatives”. I argue that compatibilism is false, and that semantic externalism is incompatible with self-knowledge. (shrink)

Externalism with regard to mental content says that in order to have certain types of intentional mental states (e.g. beliefs), it is necessary to be related to the environment in the right way.

This paper concerns content externalism and privileged access. I argue that externally-individuated concepts are not just subject to a causal constraint, but are also subject t an epistemic constraint. Their possession requires not merely that certain background presuppositions be true but, further, that the subject be in possession of true justified beliefs concerning their referents.

Working from a naïve-realist perspective, I examine first-person knowledge of one's perceptual experience. I outline a naive-realist theory of how subjects acquire knowledge of the nature of their experiences, and I argue that naive realism is compatible with moderate, substantial forms of first-person privileged access. A more general moral of my paper is that treating “success” states like seeing as genuine mental states does not break up the dynamics that many philosophers expect from the phenomenon of knowledge of the mind.

I here argue against the viability of Peter Ludlow’s modified version of Paul Boghossian’s argument for the incompatibility of semantic externalism and authoritative self-knowledge. Ludlow contends that slow switching is not merely actual but is, moreover, prevalent; it can occur whenever we shift between localized linguistic communities. It is therefore quite possible, he maintains, that we undergo unwitting shifts in our mental content on a regular basis. However, there is good reason to accept as plausible that despite their prevalence we (...) are in fact able to readily adapt to such switches, as well as to the shifts in mental content that accompany them. The prevalence of slow switching between linguistic communities does not then necessarily entail incompatibility after all. (shrink)