Full Idea
The only explanation of the power to produce borderline examples like 'Is this hazelnut one object or two?' is the possession of the concept of an object.
Gist of Idea
To express borderline cases of objects, you need the concept of an 'object'
Source
M.R. Ayers (Individuals without Sortals [1974], 'Counting')
Book Reference
-: 'Canadian Journal of Philosophy' [-], p.139