Full Idea
At various points in this book, I use a priori methods to gain insight into necessity; this is the sort of thing that Kripke's account is often taken to challenge.
Gist of Idea
Kripke is often taken to be challenging a priori insights into necessity
Source
David J.Chalmers (The Conscious Mind [1996], 1.2.4)
Book Reference
Chalmers,David J.: 'The Conscious Mind' [OUP 1997], p.56
A Reaction
Chalmers uses his 2-D approach to split off an a priori part from Kripke's a posterior part of our insight into necessity.