Quote:
Originally Posted by pilotbob
Ok, so theoretically if time travel is possible in the future... even 10,000 years from now. Could someone from that time not travel back and bring a time machine with them to make it possible now?
BOb
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The wormhole approach only lets you travel back to the time when you first moved the ends of the wormhole apart. Or perhaps it establishes a delta-T which you can theoretically traverse in either direction. But both ends continue to move into the future in the ordinary fashion. Whichever version of the explanation you use, that particular approach provides no access to times prior to creation/exploitation of the wormhole.
For other approaches, your mileage may vary.
Xenophon