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posted by Jason Kottke  ·  gift link

The Various Approaches to Time Travel in Movies & Books

Using a number of hand-drawn diagrams, minutephysics goes over the various types of time travel featured in books and movies like Primer, Harry Potter, Back to the Future, and Looper. The video covers free will, do-overs, alternate timelines, multiple selves, time machines within time machines, and many other things.