I've put a new paper online: "Phenomenal Concepts and the Explanatory Gap". In recent years, a very popular strategy for reconciling physicalism with the epistemic gap between physical processes and consciousness has been to appeal to the nature of phenomenal concepts (see e.g. these papers by Block, Carruthers, Loar, Papineau, Tye, and other papers listed here). This paper is my grand argument that no such strategy can work. It's forthcoming in Phenomenal Concepts and Phenomenal Knowledge: New Essays on Consciousness and Physicalism, edited by Torin Alter and Sven Walter and due to be published with Oxford University Press next year. My piece is a rough draft, but the final draft is due soon, so any comments are very welcome.