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View full lesson: http://ed.ted.com/lessons/how-do-you-know-you-exist-james-zucker
How do you know you’re real? Is existence all just a big dream? Has some mad scientist duped us into simply believing that we exist? James Zucker investigates all of these questions (and more) in this mind-boggling tribute to René Descartes’s “Meditations on First Philosophy.”
Lesson by James Zucker, animation by Stretch Films, Inc.