Combining Texts

All the ideas for 'fragments/reports', 'Essays on Intellectual Powers 1: Preliminary' and 'Gentzen's Analysis of First-Order Proofs'

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8 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

13831

Logic is based on transitions between sentences [Prawitz]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

13825

Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]

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

13823

In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]

9. Objects / C. Structure of Objects / 6. Constitution of an Object

6019	If someone squashed a horse to make a dog, something new would now exist [Mnesarchus]

12. Knowledge Sources / E. Direct Knowledge / 1. Common Sense

23633

Many truths seem obvious, and point to universal agreement - which is what we find [Reid]

18. Thought / C. Content / 2. Ideas

23630

Only philosophers treat ideas as objects [Reid]

19. Language / A. Nature of Meaning / 9. Ambiguity

23629

The ambiguity of words impedes the advancement of knowledge [Reid]

26. Natural Theory / C. Causation / 1. Causation

23632

Similar effects come from similar causes, and causes are only what are sufficient for the effects [Reid]