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Ideas for 'Parmenides', 'Epistemic Norms' and 'Letters to Queen Charlotte'

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10. Modality / A. Necessity / 2. Nature of Necessity

8822	Statements about necessities need not be necessarily true [Pollock]
	Full Idea: True statements about the necessary properties of things need not be necessarily true. The well-known example is that the number of planets (9) is necessarily an odd number. The necessity is de re, but not de dicto.
	From: John L. Pollock (Epistemic Norms [1986], 'Nat.Internal')
	A reaction: This would be a matter of the scope (the placing of the brackets) of the 'necessarily' operator in a formula. The quick course in modal logic should eradicate errors of this kind in your budding philosopher.