Re: necessity of mental memes

From: Grant Callaghan (
Date: Fri Jan 25 2002 - 15:16:00 GMT

  • Next message: Grant Callaghan: "Re: necessity of mental memes"

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    From: "Grant Callaghan" <>
    Subject: Re: necessity of mental memes
    Date: Fri, 25 Jan 2002 07:16:00 -0800
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    > >>
    >The light expanded both utward and inward in the hypersphere, which has
    >similar properties as a 3-d sphere (actually 4-d - 3 spatial plus 1
    >temporal), but in different planes. For instance, if you travel in one
    >direction on the curved surface of a sphere, you will end up where you
    >started after circumnavigating it. In a hypersphere, whichever direction
    >you travel in its space, you will eventually not reach the edge, but arrive
    >at the point you left after traveling a distance equivalent to the width of
    >the sphere (due to spacetime curvature). Thus, no matter from where you
    >look, to look out in space is to look backward in time, for the deeper you
    >look, the farther the light from what you see had to go to get to you.
    >Light generated by the Big Bang - which was everywhere in the universe at
    >the moment of bangage - has to travel the longest distance.
    > >>
    Sorry, I still don't get it. If everything started from a single point (the
    singularity) and has been expanding outward ever since, things at the center
    would tend to stay at the center, whouldn't they? And things flung outward
    would continue flying outward toward the edge as the ball expands. So if
    we're looking backward in time toward the earliest galaxies whose light left
    the center of the ball some 12 billion years ago and is just reaching us
    now, how did we travel fast enough to be here to catch it? Did the light
    take a more roundabout route? It's still a puzzlement.


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