"Dan Minette" <[EMAIL PROTECTED]> wrote:
>
>They have to make assumptions contradicted by SR, or, in the case of
>backwards-in-time signals, assumptions that allow causal loops.
Has anyone shown that TA (for example) allows causal loops? Or are you just
assuming that because there are spacelike signals, they can be put to use to
carry information?
Other instances of spacelike signals (e.g. the recent experiments pumping
photons > c) are consistent with SR, since they don't allow arbitrary
information to be transmitted faster than c.
Joshua
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