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Ideas for 'Lectures 1930-32 (student notes)', 'Vagueness: a global approach' and 'Equality and Partiality'

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2 ideas

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

18724	In logic nothing is hidden [Wittgenstein]
	Full Idea: In logic nothing is hidden.
	From: Ludwig Wittgenstein (Lectures 1930-32 (student notes) [1931], B XII.3)
	A reaction: If so, then the essence of logic must be there for all to see. The rules of natural deduction are a good shot at showing this.

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

23548	Indeterminacy is in conflict with classical logic [Fine,K]
	Full Idea: I now believe that the existence of indeterminacy is in conflict with classical logic.
	From: Kit Fine (Vagueness: a global approach [2020], 3)
	A reaction: I think that prior to this Fine had defended classical logic. Presumably the difficulty is over Bivalence. Nietzsche spotted this problem, despite not being a logician. Logic has to simplify the world. Hence philosophy is quite different from logic.