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Ideas for 'Consciousness', 'Logical Consequence' and 'works'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 4. Pure Logic

10690

Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic

9188	Gödel proved that first-order logic is complete, and second-order logic incomplete [Gödel, by Dummett]