Combining Texts

All the ideas for 'fragments/reports', 'The Laws of Thought' and 'Explanation and Reference'

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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]

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 / F. Referring in Logic / 1. Naming / a. Names

17505

Using proper names properly doesn't involve necessary and sufficient conditions [Putnam]

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 / 5. Essence as Kind

11908

Putnam bases essences on 'same kind', but same kinds may not share properties [Mackie,P on Putnam]

13. Knowledge Criteria / E. Relativism / 2. Knowledge as Convention

1556	By nature people are close to one another, but culture drives them apart [Hippias]

14. Science / B. Scientific Theories / 2. Aim of Science

17508

Science aims at truth, not at 'simplicity' [Putnam]

19. Language / B. Reference / 3. Direct Reference / b. Causal reference

17506

I now think reference by the tests of experts is a special case of being causally connected [Putnam]

26. Natural Theory / B. Natural Kinds / 5. Reference to Natural Kinds

17507

Natural kind stereotypes are 'strong' (obvious, like tiger) or 'weak' (obscure, like molybdenum) [Putnam]

11904

Express natural kinds as a posteriori predicate connections, not as singular terms [Putnam, by Mackie,P]