<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
</head>
<body>
<div class="moz-cite-prefix">On 03/09/2021 18:11, Adrian Tymes
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.21.1630689091.695.extropy-chat@lists.extropy.org">The
matter at hand was the objection that FTL always causes time
travel, which I believe is not a true claim.</blockquote>
<p>What I was trying to say was, if FTL travel <i>can</i> result in
time-travel, then that means that FTL travel is not possible (on
the premise that time-travel is not possible), not that it always
does.</p>
<p>Unless, somehow, only non-time-travel-causing FTL journeys were
possible (so your FTL drive mysteriously stops working when you
try certain trips).</p>
<p>And yes, of course, when I say 'time-travel', I mean into the
past. Travelling into the future, no matter how fast, causes no
problems. Or does it? This vexing idea that there is no such thing
as 'simultaneous' has got my head spinning. If you FTL travel to a
far place that is in a different reference frame, where time is
going at a different rate, then back again, can you have you
travelled backward in time? I really don't know. Intuitively, it
would seem you can't possibly arrive before you left, but ...
><<br>
</p>
<p>Ben<br>
</p>
</body>
</html>