Combining Philosophers

All the ideas for Carl Hempel, GE Hughes/M Cresswell and Dorion Sagan

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10 ideas

1. Philosophy / G. Scientific Philosophy / 3. Scientism

16567

Scientists know everything about nothing, philosophers nothing about everything [Sagan,D]

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / b. Terminology of PL

9540	A 'value-assignment' (V) is when to each variable in the set V assigns either the value 1 or the value 0 [Hughes/Cresswell]

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / d. Basic theorems of PL

9541	The Law of Transposition says (P→Q) → (¬Q→¬P) [Hughes/Cresswell]

4. Formal Logic / B. Propositional Logic PL / 4. Soundness of PL

9543	The rules preserve validity from the axioms, so no thesis negates any other thesis [Hughes/Cresswell]

5. Theory of Logic / K. Features of Logics / 4. Completeness

9544	A system is 'weakly' complete if all wffs are derivable, and 'strongly' if theses are maximised [Hughes/Cresswell]

14. Science / A. Basis of Science / 4. Prediction

22179

Explanatory facts also predict, and predictive facts also explain [Hempel, by Okasha]

14. Science / D. Explanation / 1. Explanation / b. Aims of explanation

21507

Scientific explanation aims at a unifying account of underlying structures and processes [Hempel]

14. Science / D. Explanation / 2. Types of Explanation / e. Lawlike explanations

6755	For Hempel, explanations are deductive-nomological or probabilistic-statistical [Hempel, by Bird]

17083

The covering-law model is for scientific explanation; historical explanation is quite different [Hempel]

14. Science / D. Explanation / 2. Types of Explanation / g. Causal explanations

13052

Hempel rejects causation as part of explanation [Hempel, by Salmon]