Combining Philosophers

Ideas for Henry of Ghent, Gottlob Schulze and David Lewis

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1 idea

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

16456	For modality Lewis rejected boxes and diamonds, preferring worlds, and an index for the actual one [Lewis, by Stalnaker]
	Full Idea: Lewis was suspicious of boxes and diamonds as regimenting ordinary modal thought, …preferring a first-order extensional theory including possible worlds in its domain and an indexical singular term for the actual world.
	From: report of David Lewis (Anselm and Actuality [1970]) by Robert C. Stalnaker - Mere Possibilities 3.8