Combining Philosophers

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

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3 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]

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]

29. Religion / D. Religious Issues / 3. Problem of Evil / a. Problem of Evil

20698

Irenaeus says evil is necessary for perfect human development [Irenaeus, by Davies,B]