Combining Philosophers

Ideas for Dennis Whitcomb, Ruth Barcan Marcus and Immanuel Kant

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3 ideas

9. Objects / F. Identity among Objects / 2. Defining Identity
Substitutivity won't fix identity, because expressions may be substitutable, but not refer at all [Marcus (Barcan)]
9. Objects / F. Identity among Objects / 7. Indiscernible Objects
The Identity of Indiscernibles is true of concepts with identical properties, but not of particulars [Kant, by Jolley]
If we ignore differences between water drops, we still distinguish them by their location [Kant]