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Ideas for 'fragments/reports', 'The Metaphysics of Causation' and 'Transworld Heir Lines'

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2 ideas

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

11970	Logicians like their entities to exhibit a maximum degree of purity [Kaplan]
	Full Idea: Logicians like their entities to exhibit a maximum degree of purity.
	From: David Kaplan (Transworld Heir Lines [1967], p.97)
	A reaction: An important observation, which explains why the modern obsession with logic has often led us down the metaphysical primrose path to ontological hell.

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

10373	Logical form can't dictate metaphysics, as it may propose an undesirable property [Schaffer,J]
	Full Idea: Logical form should not have the last word in metaphysics, since it might predicate a property that we have theoretical reason to reject.
	From: Jonathan Schaffer (The Metaphysics of Causation [2007], 1.3.1)
	A reaction: These kind of warnings need to be sounded all the time, to prevent logicians and language experts from pitching their tents in the middle of metaphysics. They are welcome guests only,