[net.sf-lovers] Time travel, random thoughts

shiva@duts.UUCP (11/08/85)

> 	Therefore, I propose that the gravity well of earth
> would be sufficient to "capture" the effect produced by time travel.
> Basically, a traveler would remain in the same inertial frame, and wind
> up in the same general vicinity as he started.  Any changes in the
> inertial frame from one time to the next would cause displacement
> from his point of departure.
>                                             Mark
If I understand correctly you seem to be saying that a gravity well
sort of "drags" the time traveller with it, and that therefore the motion
of the Earth and the galaxy need not worry this daring soul.

Hmmmmmm, interesting idea.

This would imply that time travel without displacement in space is  only
possible near massive bodies. It further means that if you have a
(relatively) puny spaceship, far from any massive bodies, and it moves
in time, then it would also move in space with respect to *all* the other
masses since there is nothing to "drag" it along.

But wait! What about acceleration? Acceleration = gravity, right?
So what happens to an accelerating ship which switches on a time travel
gizmo somewhere along the way? Comments? Suggestions? Flambes? Other
ejaculations?

"God not only plays dice with the universe,
 sometimes he cheats" -- ? (Stephen Hawking??)
-- 

                                          Shiva, Amdahl