Combining Philosophers

All the ideas for H.Putnam/P.Oppenheim, Jacques Lenfant and Joan Weiner

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3 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

7726	Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences [Weiner]

8. Modes of Existence / C. Powers and Dispositions / 4. Powers as Essence

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The question is whether force is self-sufficient in bodies, and essential, or dependent on something [Lenfant]

14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction

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Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]