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All the ideas for '', 'Letter to Clerk Maxwell' and 'works'

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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]

13. Knowledge Criteria / B. Internal Justification / 3. Evidentialism / b. Evidentialism

6587	It is always wrong to believe things on insufficient evidence [Clifford]

19. Language / F. Communication / 3. Denial

11214

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

27. Natural Reality / A. Classical Physics / 1. Mechanics / c. Forces

15313

By 'force' I mean the sources of all actions - sometimes called 'powers' by their outcomes [Breheny]