Combining Philosophers
Ideas for H.Putnam/P.Oppenheim, Ferdinand Tnnies and Allan Gibbard
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10 ideas
9. Objects / B. Unity of Objects / 3. Unity Problems / c. Statue and clay
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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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A 'piece' of clay begins when its parts stick together, separately from other clay [Gibbard]
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Clay and statue are two objects, which can be named and reasoned about [Gibbard]
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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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9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties
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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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9. Objects / D. Essence of Objects / 15. Against Essentialism
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Essentialism for concreta is false, since they can come apart under two concepts [Gibbard]
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9. Objects / E. Objects over Time / 12. Origin as Essential
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A particular statue has sortal persistence conditions, so its origin defines it [Gibbard]
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9. Objects / F. Identity among Objects / 6. Identity between Objects
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Claims on contingent identity seem to violate Leibniz's Law [Gibbard]
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9. Objects / F. Identity among Objects / 8. Leibniz's Law
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Two identical things must share properties - including creation and destruction times [Gibbard]
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Leibniz's Law isn't just about substitutivity, because it must involve properties and relations [Gibbard]
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