Combining Texts

All the ideas for 'The Roots of Reference', 'Papers of 1913' and 'Frege'

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3 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences [Weiner]
8. Modes of Existence / C. Powers and Dispositions / 3. Powers as Derived
Dispositions are physical states of mechanism; when known, these replace the old disposition term [Quine]
10. Modality / B. Possibility / 1. Possibility
Only the actual exists, so possibilities always reduce to actuality after full analysis [Russell]