Burge-Heil vs. Boghossian?
Dorit suggested in class that the Burge-Heil view of self-knowledge can be applied against Boghossian's argument. But I don't yet see how that application is supposed to go; I don't see exactly where Burge-Heil cuts into the argument. Here's a formulation of the argument in light of that Wednesday's class discussion:
Consider the propositions,
(A) If I am thinking that water is wet, then water exists.
(B) I am thinking that water is wet.
(C) water exists.
Now:
(1) If externalism is true, then I can know (A) a priori.
[Because, according to Boghossian, since externalism is a philosophical thesis I can know it a priori by purely philosophical reflection, and externalism a priori entails (A)].
(2) If I have privileged access, then I can know (B) a priori.
(3) If I can know (A) a priori and I can know (B) a priori, I can know (C) a priori.
[By one additional step of Modus Ponens.]
But
(4) No one can know (C) a priori.
So
(5) Either externalism is untrue or I do not have privileged access.
Now, where does Burge-Heil cut
in? It would have to be at either (1) or (2). Would they deny
(2)? Why?