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Ideas for 'works', 'Russell's Metaphysical Logic' and 'Intro: Theories of Vagueness'

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3 ideas

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

4730	For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
	Full Idea: Aristotle apparently believed that the subject-predicate structure of Greek reflected the substance-accident nature of reality.
	From: report of Aristotle (works [c.330 BCE]) by Paul O'Grady - Relativism Ch.4
	A reaction: We need not assume that Aristotle is wrong. It is a chicken-and-egg. There is something obvious about subject-predicate language, if one assumes that unified objects are part of nature, and not just conventional.

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions

21727	Definite descriptions theory eliminates the King of France, but not the Queen of England [Linsky,B]
	Full Idea: The theory of definite descriptions may eliminate apparent commitment to such entities as the present King of France, but certainly not to the present Queen of England.
	From: Bernard Linsky (Russell's Metaphysical Logic [1999], 7.3)

5. Theory of Logic / I. Semantics of Logic / 5. Extensionalism

21719	Extensionalism means what is true of a function is true of coextensive functions [Linsky,B]
	Full Idea: With the principle of extensionality anything true of one propositional functions will be true of every coextensive one.
	From: Bernard Linsky (Russell's Metaphysical Logic [1999], 6.3)