From: "James Wynn"
Subject: RE: (urth) FTL Travel Date: Wed, 20 Nov 2002 14:56:11 -0600 Jerry Friedman (J.F.) persists: I think [Crush's explanation] was [misleading]. I had the impression that people who didn't know physics were gathering that FTL means time going backwards, either visiting your past or "watching the movie in reverse". There's no reason to expect that, though I guess if FTL turns out to be possible, that could be what happens. (Also, the "simple mathematics", taking the Lorentz factor literally with a speed greater than c, gives you imaginary time--with a square root of -1--not negative time. Whatever either of those would mean.) Crush concedes: Well, if you say that that 90 years of popular scientific articles and Nova/Discovery Channel documentaries are whacked in asserting that FTL speed is a likely method of backward time travel (presuming FTL travel is not an absurdity), then I'm in no position to dispute it. I capitulate to your evident exceeding technical expertise (I had to take college algebra twice). J.F, coyly self-effaced: >>>Remember Kypris explaining possession to Silk?<<< And I'm not even pretty. Crush toasts: I don't know about that. You have lovely posts. --