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Déjà Vu & time travel

June 19, 2007 6 comments

Déjà Vu (2006 film)After watching the movie Déjà Vu (with Denzel Washington), I got to thinking about the theory of time travel:

Many in the scientific community believe that backwards time travel is highly unlikely. Any theory which would allow time travel would require that issues of causality be resolved. What if one were to go back in time and kill one’s own grandfather? (see grandfather paradox) Additionally, Stephen Hawking (Homer Simpson called him “Wheelchair Guy“) once suggested that the absence of tourists from the future constitutes an argument against the existence of time travel—a variant of the Fermi paradox.

The more theories I read, including wormholes and traveling faster than the speed of light, the more impossible is sounds. Let’s get real. If the speed of light is 3 x 10^8 m/s or 186,282 miles/sec, how can we get the human body to move that fast?