To: Physicist
And another thing: the bare statement "faster than light travel is equivalent to time travel" does not presuppose time travel into the past as you appear to be doing! Time travel into the future raises no causality issues of its own accord.
209 posted on
06/17/2004 10:53:03 AM PDT by
AntiGuv
(When the countdown hits zero - something's gonna happen..)
To: AntiGuv
And another thing: the bare statement "faster than light travel is equivalent to time travel" does not presuppose time travel into the past as you appear to be doing! Time travel into the future raises no causality issues of its own accord. While waiting for Physicist to comment, I'll play with this one. While I agree that travel into the future raises no causality issues, it's also irrelevant to FTL communications. As has been pointed out, such communications are always received (by the recipient) before the sender's transmission date, and thus they always involve travel into the past. (This is in the context of the ship and the earth being two different frames of reference.) This isn't a "presuposition," as you suggested. Rather, it's an inevitable conclusion of the way we now think the universe is put together.
213 posted on
06/17/2004 11:10:06 AM PDT by
PatrickHenry
(Yes, that IS a gun in my pocket.)
To: AntiGuv
And another thing: the bare statement "faster than light travel is equivalent to time travel" does not presuppose time travel into the past as you appear to be doing! Time travel into the future raises no causality issues of its own accord.Nor would it constitute a "striking feature" of special relativity.
Please, please, please read the page you linked.
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