Possible worlds are something you can think about, write about and even give a moderately complete description of. But they are nothing more than that. Theyare abstract, enitis, crypt and probably everyone other than david lewis thinks of possible worlds as a kind of device or story. The actual world is special. It's the only one that exists with actual planets, people, laws and flora and fauna in it. And this then points us in the direction that possible worlds are concrete, because our world is concrete.
In 1968, David Lewis decides that one truth can unify every theory he's had about the nature of the universe. It is the truth that every possible world is equally real. Lewis not only argues for this view, but devises a distinctive way of arguing for it, a method of doing philosophy that is as influential as his views. Meanwhile, a soon-to-be colleague and rival, Saul Kripke, reads Lewis' paper and fires off eight objections, and on the other side of the world, an entire continent becomes enamored with the life and works of David Kellogg Lewis, an admiration that survives to this day. Guest voices include Frank Jackson, Alan Hajek, John Bigelow, Helen Beebe, Anthony Fischer, Peter Anstey, and David Lewis.
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