Interesting that he mentions tachyon speeds found this
[
link to www.daviddarling.info]
More worryingly, as the physicist Gregory Benford and his colleagues first pointed out,
tachyons seem to lead to a time paradox because of their ability to send messages into the past. Suppose Alice on Earth and Boole on a planet circling around Sirius can communicate using what has been called a tachyon "antitelephone." They agree in advance that when Boole receives a message from Alice, he will reply immediately. Alice promises to send a message to Boole at noon her time, if and only if she has not received a message from Boole by 10 a.m. The snag is that both messages, being superluminal, travel back in time. If Alice sends her message at noon, Boole's reply could not reach her before 10 a.m. "Then," as Benford and colleagues wrote in their 1970 paper called The Tachyonic Antitelephone, "the exchange of messages will take place if and only if it does not take place..."
was that a timeline alteration ?
Quoting: >~* Flutterby Fringe*~< well remember this
field of gravity newton said and we discover is true acts instant over distance
this makes the same instant universal in our material dimension
thus all is always orientated in real time (coherent)
with that in mind how could anyone imagine anything could or would be quicker than instant, including linear time
light is slow
this is true
and we know we and all things can and do instantly detect signal over any distance if we are prompted by the signal because the medium of field of gravity is there to feel/detect the signal through , universally
so what can a time alteration be
it can only be a fluctuation in light speed because we tie all our measurement to the speed of light including how we measure time
but fluctuations in our own chosen measuring system (light speed) base line is never a change in time
because everywhere is the same instant, thanks to field of gravity
it is a change of our measuring system we have labeled time
