Full Idea
It is widely accepted that for many concepts, if not all, grasping the concept requires grasping some theory, ...which makes difficulties for the view that concepts are not learned: for 'radical concept nativism', as Fodor calls it.
Gist of Idea
It seems unlikely that most concepts are innate, if a theory must be understood to grasp them
Source
Robert Kirk (Mind and Body [2003], §7.3)
Book Reference
Kirk,Robert: 'Mind and Body' [Acumen 2003], p.142
A Reaction
Not a problem for traditional rationalist theories, where the whole theory can be innate along with the concept, but a big objection to modern more cautious non-holistic views (such as Fodor's). Does a bird have a concept AND theory of a nest?