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Uploaded on Dec 28, 2009
Astrophysicist Dave Goldberg and science fiction novelist Connie Willis consider the physics and the ethnics of time travel (with a little help from Doc Brown). Is there a way to get around the Grandfather Paradox or pick up a Monet and sell it for millions in the future? Recorded in WNYC's Jerome L. Greene Performance Space on November 17, 2009.