Combining Texts

All the ideas for 'The Dappled World', 'Investigations into Logical Deduction' and 'Response to David Armstrong'

expand these ideas     |    start again     |     specify just one area for these texts

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3 ideas

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13832

Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking]

8. Modes of Existence / C. Powers and Dispositions / 1. Powers

18398

Space, time, and some other basics, are not causal powers [Ellis]

14. Science / B. Scientific Theories / 1. Scientific Theory

17503

Theories can never represent accurately, because their components are abstract [Cartwright,N, by Portides]