Ideas from 'Extrinsic Properties' by David Lewis [1983], by Theme Structure

[found in 'Papers in Metaphysics and Epistemology' by Lewis,David [CUP 1999,0-521-58787-5]].

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8. Modes of Existence / B. Properties / 4. Intrinsic Properties
Being alone doesn't guarantee intrinsic properties; 'being alone' is itself extrinsic [Sider]
Extrinsic properties come in degrees, with 'brother' less extrinsic than 'sibling'
9. Objects / A. Existence of Objects / 5. Individuation / b. Individuation by properties
Total intrinsic properties give us what a thing is