Combining Texts

All the ideas for '', 'Notes on Logic' and 'Action, Intention and Reason'

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6 ideas

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

11211

If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]

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

11210

Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]

11212

The sense of a connective comes from primitively obvious rules of inference [Rumfitt]

7. Existence / D. Theories of Reality / 8. Facts / d. Negative facts

22312

Facts can be both positive and negative [Wittgenstein, by Potter]

19. Language / F. Communication / 3. Denial

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We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt]

20. Action / C. Motives for Action / 3. Acting on Reason / c. Reasons as causes

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Actions are not mere effects of reasons, but are under their control [Audi,R]