Page 142 - Psychoceramics and the Test of Fire
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The Quantum Reticulator

        metamaterials  he  needed.  But  how  to  design  such  an  experiment?
        Gibbons knew that it had to be verified by external observers—but
        they couldn’t all be given a view of alternate subsets of reality, and
        who would believe them if they were? And what if some risk were
        involved?  No,  he  alone  would  be  the  space-time  traveler,  and  he
        would have to bring back proof that he had been in—or at least had
        witnessed--the “forbidden zone.”
          His  next  diagram  showed  a  cluster  of  X’s,  all  overlapping  and
        strung  along  a  single  horizontal  line  passing  through  their  centers;
        each, with respect to the others, was therefore partially inaccessible.
        Then,  from  below,  in  the  past,  came  a  series  of  world  lines,  each
        originating  in  the  same  point  in  the  past  and  connecting  with  a
        different X intersection.  Those lines, therefore, represented possible
        futures  for  that  earlier  point—but  they  could  not  lead  to
        simultaneous  present  points:  relative  to  the  others,  each  was  in  an
        isolated region of space-time.  Imagine,  he proposed, that from the
        common  point  in  the  past,  an  unknown  number  of  different
        quantum states could be arrived at in the present, and that some of
        those mutually-exclusive alternates could be drawn back together in
        the  future.  The  following  chart  showed  the  same  set  of  possible
        presents for one point in the past, but it now had a mirror-image of
        those diverging lines coming back to a common point in the future.
        Each of those different present-to-future lines was a valid world line,
        of  course,  but  at  that  future  point  each  of  them  could  only  have
        come  from  the  original  point  in  the  past  by  passing  through  one
        point alone in the present—the horizontal line along which all those
        different possible presents occurred. And that was how we perceived
        our single view of what we like to call “the” universe.
          Returning  to  the  idea  of  a  world  line  representing  a  signal,  or
        electromagnetic transfer of quantum information through space-time,
        Gibbons  stated  that  metamaterials  would  enable  a  future  point  to
        receive many, if not all, of the signals transmitted along the possible
        paths  from  the  past.  Those  materials  had  a  very  limited  ability  to
        bend  light  through  space  in  such  a  way  as  to  create  an  apparent
        violation of the boundaries of the “forbidden zone.” His challenge,
        therefore, was to create a device which would permit an observer to
        make  an  extremely  brief  perceptual  excursion  through  those
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