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5750 | Consistency is modal, saying propositions are consistent if they could be true together [Melia] |
Full Idea: Consistency is a modal notion: a set of propositions is consistent iff all the members of the set could be true together. | |
From: Joseph Melia (Modality [2003], Ch.6) | |
A reaction: This shows why Kantian ethics, for example, needs a metaphysical underpinning. Maybe Kant should have believed in the reality of Leibnizian possible worlds? An account of reason requires an account of necessity and possibility. |