Online research in philosophy

Abstract: For quite some time now there has been an ongoing debate whether authoritative self-knowledge is compatible with anti-individualism.1 One influential line of argument against compatibilism is due to Paul Boghossian (1998). I argue that Boghossian misconstrues what the anti-individualist really is committed to. This defence of compatibilism is elaborated by showing how the Twin Earth thought experiment is meant to speak in favour of anti-individualism. Partly this will show that Boghossian is wrong in his denial that empirical background knowledge is imported into the Twin Earth experiment. The main points argued are that Boghossian fails to realize, both, (1) that anti-individualism does not involve concept-individuation in terms of reference, and (2) that anti-individualism assumes a core of representational success. In effect, these two points constitute an entirely new way to defend compatibilism, a way that seems to have gone unnoticed in the literature.

Several authors have argued that, assuming we have a priori knowledge of our own thought-contents, semantic externalism implies that we can know a priori contingent facts about the empirical world. After presenting the argument, I shall respond by resisting the premise that an externalist can know a priori: If s/he has the concept water, then water exists. In particular, I think Boghossian’s own Dry Earth example suggests that such thought-experiments do not provide such a priori knowledge. Boghossian himself rejects the Dry Earth experiment, however, since it would imply that externalism is true of empty concepts as well as non-empty concepts. Yet in this paper I respond by defending empty-concept externalism, from criticisms deriving from Boghossian as well as from Jessica Brown. Specifically, I argue that such a view does not preclude an empty concept from having the appropriate form or structure—nor would it reveal a priori that a linguistic community is necessary for an empty concept to have a content.

Traditionally, Anglophone philosophers have assumed that the identity of a thought is determined wholly by the subject's intrinsic states--e.g., her brain states. In the 1970's, this traditional view (lately called 'individualism' or ‘internalism’) was challenged by Hilary Putnam and Tyler Burge, who argued that the contents of one’s beliefs, desires, intentions are partly determined by one's physical, social and/or linguistic environment. The question is not whether the environment causes one to think what one does. Rather, the question is one of the identity of thoughts: In virtue of what is a thought the particular thought that it is? According to Putnam and Burge, the answer lies partly in the environment. What makes the belief expressed by ‘water is wet’ the belief that it is depends on the presence of H2O in the environment, not just on the believer’s internal states. The view that thoughts are individuated in part by environmental factors has come to be called ‘anti-individualism’ or ‘externalism’.

During the last decade Jessica Brown has been one of the main participants in the on-going debate over the compatibility of anti-individualism and self-knowledge. It is therefore of great interest that she is now publishing a book examining the various epistemological consequences of anti-individualism. The book is divided into three sections. The first discusses the question of whether a subject can have privileged access to her own thoughts, even if the content of her thoughts is construed anti-individualistically. This section contains a detailed and useful discussion not only of how we are to understand privileged access, but also of epistemological issues of more general import, such as the connection between knowledge and reliability. The second section focuses on various aspects of the problem of anti-individualism and reasoning, including an extensive discussion of the relation between anti-individualism and a Fregean account of content. The final section discusses the so-called reductio argument against compatibilism (i.e. the view that anti-individualism is compatible with a priori knowledge of one’s own thoughts), according to which compatibilism implies that we can have a priori knowledge of certain facts about the world that, intuitively, are not knowable that way. The book is very clearly written and structured. Readers unfamiliar with the debate will get a good sense of its broad contours and the various positions taken. Brown starts out by distinguishing different forms of anti-individualism. This is very helpful since it is quite clear that the term has come to be rather carelessly used, as if it referred to one particular thesis, whereas in fact a number of loosely related positions are labeled ‘antiindividualist’. At the outset she distinguishes three familiar anti-individualist theses: natural kind anti-individualism, social anti-individualism, and singular anti-individualism. These..

In her recent book Anti-Individualism and Knowledge, Jessica Brown has presented a novel answer to the self-knowledge achievement problem facing the proponent of anti-individualism. She argues that her answer is to be preferred to the traditional answer (based on Burge, 1988a). Here I present three objections to the claim that her proposed answer is to be preferred. The significance of these objections lies in what they tell us about the nature of the sort of knowledge that is in dispute. Perhaps the most important lesson I draw from this discussion is that, given the nature of knowledge of one's own thoughts, discriminability (from relevant alternatives) is not a condition on knowledge as such.