Combining Texts

All the ideas for 'Counterparts and Identity', 'Confessio naturae contra atheistas' and 'Calculus Ratiocinator'

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7 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

18823

To say there could have been people who don't exist, but deny those possible things, rejects Barcan [Stalnaker, by Rumfitt]

9. Objects / A. Existence of Objects / 5. Individuation / c. Individuation by location

12693

A body is that which exists in space [Leibniz]

10. Modality / E. Possible worlds / 3. Transworld Objects / c. Counterparts

16409

Unlike Lewis, I defend an actualist version of counterpart theory [Stalnaker]

16411

If possible worlds really differ, I can't be in more than one at a time [Stalnaker]

16412

If counterparts exist strictly in one world only, this seems to be extreme invariant essentialism [Stalnaker]

11. Knowledge Aims / C. Knowing Reality / 3. Idealism / a. Idealism

12742

A whole is just its parts, but there are no smallest parts, so only minds and perceptions exist [Leibniz]

19. Language / C. Assigning Meanings / 8. Possible Worlds Semantics

16410

Extensional semantics has individuals and sets; modal semantics has intensions, functions of world to extension [Stalnaker]