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The physics of time travel

The majority of physicists say time travel probably won’t work (at least in the Hollywood-go-anytime-you-wanna sense). Several time traveler parties have gone famously unattended by time travelers (at least, any willing to fess up about it). In general, science is kind of a buzz-kill on this one.

But if you want some justification for your daydreams, the person to talk to is Ronald Mallett, a theoretical physicists at the University of Connecticut who is most well-known for being the guy who thinks time travel is totally possible. (Mark wrote about him here back in 2007.) In fact, in 2006, Mallett predicted that time travel would be figured out within a decade.
via Boing Boing

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