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4897 | A proposition is a set of possible worlds for which its intension delivers truth [Perry] |
Full Idea: The proposition expressed by a sentence can be thought of as a set of possible worlds, the worlds for which its intension delivers truth. | |
From: John Perry (Knowledge, Possibility and Consciousness [2001], §8.1) | |
A reaction: It has always struck me as important to hang on to the concept of a 'proposition' (over and above sentences). This idea gives a metaphysics for the concept, and the 'language of thought' offers appropriate brain structures. A neat picture. |