3 Simple Ways to Time Travel (& 3 Complicated Ones)

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Thanks to Volkswagen for supporting this video - http://vwoa.us/160kehn
And check out Aatish Bhatia's excellent physics blog - http://www.empiricalzeal.com/

Volkswagen would like you to know that every new Volkswagen comes with no-charge scheduled maintenance for the first two years or 24,000 miles.

For more on time-travel, here are some works by physicist and time-lord Sean Carroll:

Rules for time-travellers - http://blogs.discovermagazine.com/cosmicvariance/2009/05/14/rules-for-time-travelers/#.UmQ5QBYz5Hw

Learn more about time and time-machines in his book From Eternity to Here - http://preposterousuniverse.com/eternitytohere/
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https://www.youtube.com/watch?v=FflcA85zcOM