Full Idea
A problem with the revised classical view is that the concept core does not seem to be an important part of the concept, despite its name and theoretical intention as representing the 'real' concept.
Gist of Idea
The classical core is meant to be the real concept, but actually seems unimportant
Source
Gregory L. Murphy (The Big Book of Concepts [2004], Ch. 2)
Book Reference
Murphy,Gregory L.: 'The Big Book of Concepts' [MIT 2004], p.28
A Reaction
Apparently most researchers feel they can explain their results without reference to any core. Not so fast, I would say (being an essentialist). Maybe people acknowledge an implicit core without knowing what it is. See Susan Gelman.