These are what Everard calls twentieth-century "glimmerings" (p. 28) of time travel:
non-inertial reference frames;
quantum gravity;
energy from the vacuum;
violation of Bell's theorem;
wormholes in the continuum;
Kerr metrics;
Tipler machines.
Maybe energy from the vacuum answers Wanda's question:
"'Where does the energy come from?'" (p. 27)
The only sensible idea in Isaac Asimov's hopelessly inconsistent time travel novel, The End Of Eternity (see here), was that time travelers used the future energy of Nova Solis. That should be enough.
Meanwhile, so to say, a Time Patrol researcher can immerse himself in an earlier world-view. In 209 B. C. , on p. 47, there are four Buddhist terms:
Buddha;
topes;
stupas;
vihara.
(Gautama, asked if he was a god, replied that he was "awake" (buddha).)
1 comment:
Kaor, Paul!
And of course we see Poul Anderson using Tipler machines in his novel THE AVATAR. I remember how I did not quite like that book the first time I read it. But when I reread it years later I thought better of it!
And we have both read Tipler's mind bending book THE PHYSICS OF CHRISTIANITY!
I also wonder if some of the phenomena you listed might be relevant to someday discovering a way around the light speed barrier to FTL travel.
Ad astra! Sean
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