Combining Texts

All the ideas for 'fragments/reports', 'A Completeness Theorem in Modal Logic' and 'Why there isn't a ready-made world'

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11 ideas

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic

10163

Propositional modal logic has been proved to be complete [Kripke, by Feferman/Feferman]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic

10760

With possible worlds, S4 and S5 are sound and complete, but S1-S3 are not even sound [Kripke, by Rossberg]

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

16189

The variable domain approach to quantified modal logic invalidates the Barcan Formula [Kripke, by Simchen]

15132

The Barcan formulas fail in models with varying domains [Kripke, by Williamson]

7. Existence / D. Theories of Reality / 2. Realism

17644

Metaphysical realism is committed to there being one ultimate true theory [Putnam]

7. Existence / D. Theories of Reality / 4. Anti-realism

17648

It is an illusion to think there could be one good scientific theory of reality [Putnam]

9. Objects / B. Unity of Objects / 3. Unity Problems / c. Statue and clay

17643

Shape is essential relative to 'statue', but not essential relative to 'clay' [Putnam]

12. Knowledge Sources / B. Perception / 4. Sense Data / b. Nature of sense-data

17642

The old view that sense data are independent of mind is quite dotty [Putnam]

23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / e. Character

541	Virtue comes more from habit than character [Critias]

26. Natural Theory / C. Causation / 8. Particular Causation / d. Selecting the cause

17645

An alien might think oxygen was the main cause of a forest fire [Putnam]

28. God / C. Attitudes to God / 5. Atheism

542	Fear of the gods was invented to discourage secret sin [Critias]