Combining Texts

All the ideas for 'Free Will Defence', 'A Completeness Theorem in Modal Logic' and 'Certain Physical Essays'

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8 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]
14. Science / D. Explanation / 1. Explanation / b. Aims of explanation
16736 Explanation is generally to deduce it from something better known, which comes in degrees [Boyle]
14. Science / D. Explanation / 3. Best Explanation / b. Ultimate explanation
16737 The best explanations get down to primary basics, but others go less deep [Boyle]
29. Religion / D. Religious Issues / 3. Problem of Evil / b. Human Evil
1474 Moral evil may be acceptable to God because it allows free will (even though we don't see why this is necessary) [Plantinga, by PG]
29. Religion / D. Religious Issues / 3. Problem of Evil / d. Natural Evil
1475 It is logically possible that natural evil like earthquakes is caused by Satan [Plantinga, by PG]