Unexplained Science

by John Deakins

Time Travel always requires Unexplained Science. You have to have a time machine. The “machine” might transfer human consciousness, move you bodily, or accidentally suck you through a time-warp. Even (ugh!) Romantic Fantasy needs a magic mirror or something. Remember the dangers of over-explaining? Unexplained Science is a subset of “Ignore It.” There ain’t no time machines, and the science to produce one is nonexistent.

Time travel will work if your time machine is actually a time-and-space machine. You’ve re-invented the Star Trek transporter, emphasizing movement through Time instead of transportation through space. You can travel to past-Chicago if your machine compensates for the thousands of kilometers by which past-Chicago is separated from present-Chicago and somehow sloughs off all that nasty kinetic energy and momentum difference between the two. That’s asking a lot, but Star Trek repeatedly “beams up” people, inevitably involving Time as well as space. There’s only Gee-Whiz “Science” behind the “transporter.” I’d be almost embarrassed to use it.

You can Live With It. We all already travel in time: forward only. A human in suspended animation, could “skip ahead” to the future. Perhaps you foresee a future that great past SF authors haven’t envisioned. Going backward in Time, however, is out of the question. Almost every writer has been forced to go with Ignore It. How embarrassing! Is there no hope?

You wouldn’t think that it’d take long to exhaust Live With It. What you really want is to stay in a fixed location relative to the Earth, as you travel in Time. Why not pick an unchanging object on the Earth, like a piece of dense metal, and “lock” your time machine to that? Your (fictional) machine would always arrive in the same relative position to its “Time anchor,” even as the planet moves around. It would be best always to travel to the same relative day-hour-minute-second as the time you left. Thus, there’d be only minor differences between your beginning momentum and arrival momentum. The Time anchor could absorb small momentum differences, like catching an incoming carrier jet on a tail-hook. Travel too “far” in Time would create too great a momentum difference, however, and the anchor might melt or explode. Can you say, “One way trip?”

You now have a workable time machine. Think of all the wonderful complications you can generate. What if your “time anchor” hadn’t actually been in as “fixed” as you thought? Somebody moved it, and nobody told you. You could end up on another continent in an alien culture. What if the “solid” anchor you depended on hadn’t always been as solid as you assumed? What if the math was wrong and, after a certain number of years, solid molecules had moved beyond their apparently fixed positions?

Why were you time traveling at all? Is the past a “fixed” continuum, no matter what you change? Is the past flexible so that you change the future by your slightest action? What about the paradoxes? It’s time to have fun again.

John Deakins, B.A., M.S.T. is a four-decade veteran of the science classroom and author of his own fantasy series Barrow.

To read an excerpt from Barrow book one, please click HERE.