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What better way can there be to discuss the nature of time than sitting down with two eminent theoretical physicists in the timeless beauty of Vieques, at the western end of the Spanish Virgin Islands? Alan Guth, who first proposed the theory of cosmic inflation, and Sean Carroll, cosmologist and popular science communicator (and also a member of the board of Nautilus), are currently working together, in collaboration with Caltech grad student Chien-Yao Tseng, on a paper explaining the arrow of time. Watch as they walk us through some of the basic ideas.

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