Combining Texts

All the ideas for '27: Book of Daniel', 'The Laws of Thought' and 'Intensions Revisited'

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11 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8083	Boole applied normal algebra to logic, aiming at an algebra of thought [Boole, by Devlin]

7727	Boole's notation can represent syllogisms and propositional arguments, but not both at once [Boole, by Weiner]

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

13591

Quantified modal logic collapses if essence is withdrawn [Quine]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8686	Boole made logic more mathematical, with algebra, quantifiers and probability [Boole, by Friend]

5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof

22277

Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]

9. Objects / D. Essence of Objects / 15. Against Essentialism

13590

Essences can make sense in a particular context or enquiry, as the most basic predicates [Quine]

10. Modality / A. Necessity / 11. Denial of Necessity

8483	Necessity is relative to context; it is what is assumed in an inquiry [Quine]

10. Modality / E. Possible worlds / 1. Possible Worlds / e. Against possible worlds

13589

Possible worlds are a way to dramatise essentialism, and yet they presuppose essentialism [Quine]

10. Modality / E. Possible worlds / 3. Transworld Objects / b. Rigid designation

13588

A rigid designator (for all possible worlds) picks out an object by its essential traits [Quine]

11. Knowledge Aims / A. Knowledge / 4. Belief / a. Beliefs

13592

Beliefs can be ascribed to machines [Quine]

29. Religion / D. Religious Issues / 2. Immortality / a. Immortality

7482	Resurrection developed in Judaism as a response to martyrdoms, in about 160 BCE [Anon (Dan), by Watson]