Time Machine



http://www.foxnews.com/story/0,2933,293937,00.html

From the article:


"The machine is space-time itself," Ori said. "If we were to create an
area with a warp like this in space that would enable time lines to
close on themselves, it might enable future generations to return to
visit our time."

Ori emphasized one significant limitation of this time machine.

"It can't be used to travel to a time before the time machine was
constructed," he explained

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Sherrie's comments:

I'm trying to understand this. It sounds like two time machines must
be constructed. One from which to travel, and one to which to travel.
This might be like the chicken and the egg concept, I'm thinking.
Which one comes first? And it almost sounds like traveling from
present to future rather than present to past. Worst case, present to
present.

Let's say the machine was already invented. How does one test it given
the limitation mentioned in the article?

.



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