Combining Philosophers

All the ideas for H.Putnam/P.Oppenheim, Hilbert,D/Ackermann,W and Jacob Zabarella

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4 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC
17750 The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki]
8. Modes of Existence / C. Powers and Dispositions / 3. Powers as Derived
16740 A power is not a cause, but an aptitude for a cause [Zabarella]
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]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / b. Prime matter
16571 Prime matter is exceptionally obscure [Zabarella]