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Single Idea 14066
[filed under theme 9. Objects / B. Unity of Objects / 3. Unity Problems / c. Statue and clay
]
Full Idea
A 'piece' of clay is a portion of clay which comes into existence when all of its parts come to be stuck to each other, and cease to be stuck to any clay which is not a part of the portion.
Gist of Idea
A 'piece' of clay begins when its parts stick together, separately from other clay
Source
Allan Gibbard (Contingent Identity [1975], I)
Book Ref
-: 'Journal of Symbolic Logic' [-], p.189
A Reaction
The sort of gormlessly elementary things that philosophers find themselves having to say, but this is a good basic assertion for a discussion of statue and clay, and I can't think of an objection to it.
The
14 ideas
from 'Contingent Identity'
14064
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If a statue is identical with the clay of which it is made, that identity is contingent
[Gibbard]
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14066
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A 'piece' of clay begins when its parts stick together, separately from other clay
[Gibbard]
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14067
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Clay and statue are two objects, which can be named and reasoned about
[Gibbard]
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14065
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Two identical things must share properties - including creation and destruction times
[Gibbard]
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14070
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A particular statue has sortal persistence conditions, so its origin defines it
[Gibbard]
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14069
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We can only investigate the identity once we have designated it as 'statue' or as 'clay'
[Gibbard]
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14071
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Naming a thing in the actual world also invokes some persistence criteria
[Gibbard]
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14072
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Possible worlds identity needs a sortal
[Gibbard]
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14073
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Claims on contingent identity seem to violate Leibniz's Law
[Gibbard]
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14074
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Leibniz's Law isn't just about substitutivity, because it must involve properties and relations
[Gibbard]
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14076
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Essentialism is the existence of a definite answer as to whether an entity fulfils a condition
[Gibbard]
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14077
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Essentialism for concreta is false, since they can come apart under two concepts
[Gibbard]
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14078
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Only concepts, not individuals, can be the same across possible worlds
[Gibbard]
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14079
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Kripke's semantics needs lots of intuitions about which properties are essential
[Gibbard]
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