Combining Texts

All the ideas for 'Actions', 'Has Philosophy Lost Contact with People?' and 'A Completeness Theorem in Modal Logic'

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7 ideas

1. Philosophy / A. Wisdom / 3. Wisdom Deflated

9764	Inspiration and social improvement need wisdom, but not professional philosophy [Quine]

1. Philosophy / D. Nature of Philosophy / 6. Hopes for Philosophy

9763	For a good theory of the world, we must focus on our flabby foundational vocabulary [Quine]

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]

20. Action / A. Definition of Action / 5. Action as Trying

20082

Bodily movements are not actions, which are really the tryings within bodily movement [Hornsby, by Stout,R]