This paper discusses whether it can be known a priori that a particular term, such as water, is a natural kind term, and how this problem relates to Putnams claim that natural kind terms require an externalist semantics. Two conceptions of natural kind terms are contrasted: The first holds that whether water is a natural kind term depends on its a priori knowable semantic features. The second.

(No abstract is available for this citation).

The argument known as the 'McKinsey Recipe' tries to establish the incompatibility of semantic externalism (about natural kind concepts in particular) and _a priori _self- knowledge about thoughts and concepts by deriving from the conjunction of these theses an absurd conclusion, such as that we could know _a priori _that water exists. One reply to this argument is to distinguish two different readings of 'natural kind concept': (i) a concept which _in fact _denotes a natural kind, and (ii) a concept (...) which _aims_ to denote a natural kind. Paul Boghossian has argued, using a _Dry Earth _scenario, that this response fails, claiming that the externalist cannot make sense of a concept aiming, but failing, to denote a natural kind. In this paper I argue that Boghossian's argument is flawed. Borrowing machinery from two-dimensional semantics, using the notion of 'considering a possible world as actual', I claim that we can give a determinate answer to Boghossian's question: which concept would 'water' express on Dry Earth? (shrink)

I argue against the view that an agent’s knowledge of her own current action cannot in any way rely on perception for its justification. Instead, I argue that when it comes to an agent’s knowledge of her own object-oriented intentional action, the agent’s belief about what she is doing is partly justified by her perception of the object of action. I proceed by first proposing an account of such actions according to which the agent’s knowledge is partly justified by her (...) perception. I then discuss several of objections to my proposal. The most important objection is that I have only managed to show that perception plays an enabling role and not a justificatory role for the agent’s knowledge of her own intentional action. (shrink)

The McKinsey Problem concerns a puzzling implication of the doctrines of Content Externalism and Privileged Access. I provide a categorization of possible solutions to the problem. Then I discuss Crispin Wright’s work on the problem. I argue that Wright has misconceived the status of his own proferred solution to the problem.

Two-dimensional semantics aims to eliminate the puzzle of necessary a posteriori and contingent a priori truths. Recently many argue that even assuming two-dimensional semantics we are left with the puzzle of necessary and a posteriori propositions. Stephen Yablo (Pacific Philosophical Quarterly, 81, 98–122, 2000) and Penelope Mackie (Analysis, 62(3), 225–236, 2002) argue that a plausible sense of “knowing which” lets us know the object of such a proposition, and yet its necessity is “hidden” and thus a posteriori. This paper answers (...) this objection; I argue that given two-dimensional semantics you cannot know a necessary proposition without knowing that it is true. (shrink)