Lectures on Faster-Than-Light Travel and Time Travel
It seems to me that most people view &quot;time&quot; as it &quot;exists&quot; in the universe as though there infinitely many infinitesimal sequences of &quot;snapshots&quot; of the universe in a linear line, upon which you could (if time travel was possible) jump between them.<p>I was always under the impression that time as we know it is merely an idea and variable we add to equations to explain the motion we perceive. We see one thing happen after another thing, and conjure up the idea of time to capture a duration between the two occurrences. This duration of course only being relevant to us in our shared reference frame of earth, and because we have the ability to form memories, and experience duration.