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Single Idea 13331

[filed under theme 4. Formal Logic / G. Formal Mereology / 1. Mereology ]

Full Idea

The whole identity of a part is relevant to whether it is a part, but the identity of the whole makes a part a part. The whole part belongs to the whole as a part. The standard account in terms of time-slices fails to respect this part/whole asymmetry.

Gist of Idea

Part and whole contribute asymmetrically to one another, so must differ

Source

Kit Fine (Things and Their Parts [1999], §2)

Book Ref

-: 'Midwest Studs in Philosophy' [-], p.65


A Reaction

Hard to follow, but I think the asymmetry is that the wholeness of the part contributes to the wholeness of the whole, while the wholeness of the whole contributes to the parthood of the part. Wholeness does different jobs in different directions. OK?


The 8 ideas from 'Things and Their Parts'

A 'temporary' part is a part at one time, but may not be at another, like a carburetor [Fine,K]
A 'timeless' part just is a part, not a part at some time; some atoms are timeless parts of a water molecule [Fine,K]
Two sorts of whole have 'rigid embodiment' (timeless parts) or 'variable embodiment' (temporary parts) [Fine,K]
An 'aggregative' sum is spread in time, and exists whenever a component exists [Fine,K]
An 'compound' sum is not spread in time, and only exists when all the components exists [Fine,K]
Part and whole contribute asymmetrically to one another, so must differ [Fine,K]
Hierarchical set membership models objects better than the subset or aggregate relations do [Fine,K]
The matter is a relatively unstructured version of the object, like a set without membership structure [Fine,K]