Combining Texts

All the ideas for 'The Sign of Four', 'Elements of Mathematical Logic' and 'Socrates: Ironist and Moral Philosopher'

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3 ideas

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

8942	Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher]

14. Science / C. Induction / 1. Induction

22200

If you eliminate the impossible, the truth will remain, even if it is weird [Conan Doyle]

25. Social Practice / D. Justice / 3. Punishment / b. Retribution for crime

1658	In early Greece the word for punishment was also the word for vengeance [Vlastos]