What Is Time? (1 of 4)

Kelly Neill
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"What is time?" with physicist Julian Barbour (author of "The End of Time") and Craig Callender (University of California, San Diego), a Bloggingheads.tv "diavlog" supported by the Templeton Foundation. For the full video, please visit http://bloggingheads.tv/videos/2079

In Barbour's universe, every moment of every individual's life— birth, death, and everything in between— exists forever. "Each instant we live," Barbour says, "is, in essence, eternal." That means each and every one of us is immortal. Like the perpetually unmoving lovers in Keats's "Ode on a Grecian Urn," we are "for ever panting, and for ever young." We are also for ever aged and decrepit, on our deathbeds, in the dentist's chair, at Thanksgivings with our in-laws, and reading these words.

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