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Single Idea 14069

[filed under theme 9. Objects / B. Unity of Objects / 3. Unity Problems / c. Statue and clay ]

Full Idea

To ask meaningfully what that thing would be, we must designate it either as a statue or as a piece of clay. What that thing would be, apart from the way it is designated, is a question without meaning.

Gist of Idea

We can only investigate the identity once we have designated it as 'statue' or as 'clay'

Source

Allan Gibbard (Contingent Identity [1975], III)

Book Ref

-: 'Journal of Symbolic Logic' [-], p.194


A Reaction

He obviously has a powerful point, but to suggest that we can only investigate a mysterious object once we have designated it as something sounds daft. It would ruin the fun of archaeology.


The 14 ideas from 'Contingent Identity'

If a statue is identical with the clay of which it is made, that identity is contingent [Gibbard]
A 'piece' of clay begins when its parts stick together, separately from other clay [Gibbard]
Clay and statue are two objects, which can be named and reasoned about [Gibbard]
Two identical things must share properties - including creation and destruction times [Gibbard]
A particular statue has sortal persistence conditions, so its origin defines it [Gibbard]
We can only investigate the identity once we have designated it as 'statue' or as 'clay' [Gibbard]
Naming a thing in the actual world also invokes some persistence criteria [Gibbard]
Possible worlds identity needs a sortal [Gibbard]
Claims on contingent identity seem to violate Leibniz's Law [Gibbard]
Leibniz's Law isn't just about substitutivity, because it must involve properties and relations [Gibbard]
Essentialism is the existence of a definite answer as to whether an entity fulfils a condition [Gibbard]
Essentialism for concreta is false, since they can come apart under two concepts [Gibbard]
Only concepts, not individuals, can be the same across possible worlds [Gibbard]
Kripke's semantics needs lots of intuitions about which properties are essential [Gibbard]