Combining Texts

All the ideas for 'The Lagoon: how Aristotle invented science', 'A Completeness Theorem in Modal Logic' and 'Moral Thinking: Its Levels,Method and Point'

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10 ideas

1. Philosophy / C. History of Philosophy / 2. Ancient Philosophy / b. Pre-Socratic philosophy

21355

The Pre-Socratics are not simple naturalists, because they do not always 'leave the gods out' [Leroi]

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]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / i. Prescriptivism

4125	Hare says I acquire an agglomeration of preferences by role-reversal, leading to utilitarianism [Hare, by Williams,B]

4126	If we have to want the preferences of the many, we have to abandon our own deeply-held views [Williams,B on Hare]

4127	If morality is to be built on identification with the preferences of others, I must agree with their errors [Williams,B on Hare]

22483

A judgement is presciptive if we expect it to be acted on [Hare]

23. Ethics / B. Contract Ethics / 8. Contract Strategies

4360	By far the easiest way of seeming upright is to be upright [Hare]