Full Idea
If you can't squeeze an 'ought' from an 'is', then the feature of normativity will prevent the reduction of Aboutness.
Gist of Idea
Rule-following can't be reduced to the physical
Source
Scott Sturgeon (Matters of Mind [2000], Intro)
Book Reference
Sturgeon,Scott: 'Matters of Mind' [Routledge 2000], p.2
A Reaction
A dubious argument. Hume's point is that no rational inference will get you from is to ought, but you can get there on a whim. I don't see normativity as being so intrinsically magical that it is irreducible.