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Ideas for '', 'Liberal Individualism and Liberal Neutrality' and 'Lectures 1930-32 (student notes)'

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4 ideas

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]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not

18723

We may correctly use 'not' without making the rule explicit [Wittgenstein]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and

18718

Saying 'and' has meaning is just saying it works in a sentence [Wittgenstein]