Combining Texts

All the ideas for 'Counterparts and Identity', 'Explanation in Mathematics' and 'The History of Animals'

expand these ideas     |    start again     |     specify just one area for these texts

---

9 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 / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

13166

Essences are no use in mathematics, if all mathematical truths are necessary [Mancosu]

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]

14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence

15119

Aristotelian explanation by essence may need to draw on knowledge of other essences [Aristotle, by Koslicki]

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]

27. Natural Reality / G. Biology / 2. Life

23302

Plants have far less life than animals, but more life than other corporeal entities [Aristotle]

27. Natural Reality / G. Biology / 3. Evolution

23301

There is a gradual proceeding from the inanimate to animals, with no clear borderlines [Aristotle]