Essay On Intrinsic And Extrinsics

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Is it possible for objects genuinely to persist yet change their intrinsic, natural properties?

Many accounts support the possibility for objects genuinely to persist yet change their intrinsic, natural properties. Intuitively we think that it would be possible: the assumption that this claim is true, Loux argues, ‘underlies some of our most fundamental beliefs about ourselves and the world around us’ (1998: 203). In this essay I shall focus solely on the account of David Lewis’s ‘Doctrine of Temporal Parts’ that it is possible for objects to persist through change by having different temporal parts. By briefly examining intrinsics and extrinsics and the problem of change you will be able to see how successful Lewis’s solution is to this problem, before viewing some weaknesses of the account and then ultimately concluding that Lewis solution successfully achieves the possibility that objects genuinely persist yet change their intrinsic, natural properties.

Intrinsics vs. Extrinsics
Persists: something persists iff the object exists at more than one time: to transcend momentary. Persistence through time is analogous to an extension through space. There is much debate over how objects are composed, and what is regarded as an intrinsic property. What one counts as an intrinsic property will be integral to their criterion of persisting identity for objects that is predicated on the object’s having certain intrinsic properties. The distinction between intrinsic and extrinsic properties is essential, and within this argument; we shall use Lewis’s definitions. Extrinsic properties are ones that an object has in virtue of the relations it stands to different things, e.g. location, temperature. While “A thing has its intrinsic properti...

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...wo side by side the endurantist theories, and our intuition, never better Lewis’s third solution of the doctrine of temporal parts. The endurantist solutions are all far more weak and primitive than Lewis’s. Lewis deems the endurantist position as metaphysically untenable and his own as philosophically sound because of his side note of the need to accept temporal parts into the reader’s ontology.

Conclusion
This essay argues it is possible for objects genuinely to persist, yet change their intrinsic properties. Lewis’s stance of the ‘doctrine of temporal parts’ as an argument for persistence, by perduring, requires us to reduce the authority we give to our intuition in influencing our philosophical view. If one accepts the trade-off, then Lewis’s solution allows for the possibility for objects genuinely to persist yet change their intrinsic, natural properties.

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