scientific understanding is flawed. All sorts of strange things could
happen if the speed of light can be exceeded. Causality - the relation
between cause and effect - would be affected. Anyone traveling faster
than the speed of light would be able to see fragments of a broken
vase coming together. Faster-than-light travelers could go back in
time - say, leave New York for Paris one evening and return the
previous day.
http://mobile.nytimes.com/article?a=847884&single=1&f=28
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