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Ideas for 'Lectures 1930-32 (student notes)', 'What Does It Take to Refer?' and 'A Free Will'

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2 ideas

5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic

10454

In first-order we can't just assert existence, and it is very hard to deny something's existence [Bach]

5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention

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Laws of logic are like laws of chess - if you change them, it's just a different game [Wittgenstein]