Combining Philosophers

All the ideas for H.Putnam/P.Oppenheim, Max J. Cresswell and Karl Popper

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24 ideas

2. Reason / A. Nature of Reason / 5. Objectivity
22358 Scientific objectivity lies in inter-subjective testing [Popper]
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / b. System K
14970 Normal system K has five axioms and rules [Cresswell]
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / c. System D
14971 D is valid on every serial frame, but not where there are dead ends [Cresswell]
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / g. System S4
14972 S4 has 14 modalities, and always reduces to a maximum of three modal operators [Cresswell]
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5
14973 In S5 all the long complex modalities reduce to just three, and their negations [Cresswell]
4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
14976 Reject the Barcan if quantifiers are confined to worlds, and different things exist in other worlds [Cresswell]
8. Modes of Existence / A. Relations / 4. Formal Relations / a. Types of relation
14974 A relation is 'Euclidean' if aRb and aRc imply bRc [Cresswell]
8. Modes of Existence / C. Powers and Dispositions / 7. Against Powers
11946 Propensities are part of a situation, not part of the objects [Popper]
9. Objects / D. Essence of Objects / 11. Essence of Artefacts
12177 Human artefacts may have essences, in their purposes [Popper]
9. Objects / D. Essence of Objects / 15. Against Essentialism
5451 Popper felt that ancient essentialism was a bar to progress [Popper, by Mautner]
10. Modality / A. Necessity / 4. De re / De dicto modality
14975 A de dicto necessity is true in all worlds, but not necessarily of the same thing in each world [Cresswell]
14. Science / A. Basis of Science / 6. Falsification
22188 Give Nobel Prizes for really good refutations? [Gorham on Popper]
18284 Particulars can be verified or falsified, but general statements can only be falsified (conclusively) [Popper]
7780 Falsification is the criterion of demarcation between science and non-science [Popper, by Magee]
16830 We don't only reject hypotheses because we have falsified them [Lipton on Popper]
6794 If falsification requires logical inconsistency, then probabilistic statements can't be falsified [Bird on Popper]
6795 When Popper gets in difficulties, he quietly uses induction to help out [Bird on Popper]
14. Science / B. Scientific Theories / 2. Aim of Science
3856 Good theories have empirical content, explain a lot, and are not falsified [Popper, by Newton-Smith]
14. Science / C. Induction / 3. Limits of Induction
7779 There is no such thing as induction [Popper, by Magee]
14. Science / C. Induction / 4. Reason in Induction
3860 Science cannot be shown to be rational if induction is rejected [Newton-Smith on Popper]
14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction
20653 Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]
14. Science / D. Explanation / 3. Best Explanation / b. Ultimate explanation
12176 Science does not aim at ultimate explanations [Popper]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / a. Scientific essentialism
12175 Galilean science aimed at true essences, as the ultimate explanations [Popper]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / e. Anti scientific essentialism
12179 Essentialist views of science prevent further questions from being raised [Popper]