Hal Finney wrote:
> Dan Fabulich, <daniel.fabulich@yale.edu>, writes:
> > FTL movement => arbitrary backwards time travel.
> >
> > Now suppose, for example, that your flavor of time machine uses special
> > limiting "gateways." You build the gateway today, wait a week, walk into
> > the gateway, and you've just travelled one week back in time.
> >
> > It would appear that the inventor's ability to time travel is limited: If I
> > build the gateway tomorrow, I can't travel back to today, though I can
> > travel back to tomorrow from any arbitrary point in the future.
Now, given this idea, since no matter/antimatter converters are in existence of the type needed, then of course we will not have seen any time travelers come back to this date from the future. They will be limited to traveling within their own era.
Mike Lorrey