Full Idea
The 'aggregative' objection to classical extensional mereology is that it assigns simply the wrong, set-like conditions of existence and spatio-temporal location to ordinary material objects.
Gist of Idea
The 'aggregative' objections says mereology gets existence and location of objects wrong
Source
Kathrin Koslicki (The Structure of Objects [2008], 5.1)
Book Reference
Koslicki,Kathrin: 'The Structure of Objects' [OUP 2008], p.93
A Reaction
[She attributes this to Kit Fine] The point is that there is more to a whole than just some parts, otherwise you could scatter the parts across the globe (or even across time) and claim that the object still existed. It's obvious really.