Full Idea
One day the physicists will complete the catalogue of ultimate and irreducible properties of things. When they do, the like of spin, charm and charge will perhaps appear on the list. But aboutness sure won't; intentionality simply doesn't go that deep.
Gist of Idea
Intentionality is too superficial to appear in the catalogue of ultimate physics
Source
Theodore Sider (Writing the Book of the World [2011], 4 Intro)
Book Reference
Sider,Theodore: 'Writing the Book of the World' [OUP 2011], p.97
A Reaction
Fodor's project is to give a reductive, and perhaps eliminative, account of intentionality of mind, while leaving open what one might do with the phenomenological aspects. Personally I don't think they will appear on the list either.