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From: andrew@mitisft.UUCP
Newsgroups: net.physics,net.sci,net.philosophy
Subject: Re: A Sane Man Proposes A Time Travel Experiment
Message-ID: <140@mitisft.UUCP>
Date: Thu, 31-Jul-86 19:50:50 EDT
Article-I.D.: mitisft.140
Posted: Thu Jul 31 19:50:50 1986
Date-Received: Sat, 2-Aug-86 10:31:50 EDT
References: <289@axiom.UUCP> <5723@lanl.ARPA> <5594@sun.uucp>
Organization: Convergent Technologies, San Jose, CA
Lines: 27
Xref: watmath net.physics:4723 net.sci:1429 net.philosophy:6411
Summary: 2-d universe is really 3-d! (at least)

In article <5594@sun.uucp>, lyang@sun.uucp (Larry Yang) writes:
> In article <5723@lanl.ARPA> dxm@lanl.ARPA (Douglas Miller) writes:
> >Time travel violates the conservation of mass and energy laws.  Consider
>  ...
> I used to believe this argument, too, 'til I got my brain out of the
> classical view of the universe.  Consider time as an additional dimension.
>  ...
> As an analogy, consider a 2-D universe.  Imagine a 1-kg "square" of gold
> begin translated 1 "hour" perpendicular to this plane.  Now our original
> universe is now 1-kg less, but the overall universe has the same mass.

	The problem with this is, in a universe with two spatial dimensions,
a "2-cube" of gold would not appear to us as a square; rather it would
be a square tube -- a 3-d object, since it exists at many different times.
If the gold didnt move, it would be a straight tube (prism?). If it moved
in space, the tube would wiggle.  If it broke into pieces, the tube would
branch.

	What would happen if it were "moved in time"?  The tube would
be broken off, and the entire "future" part of it would be translated
forwards.  Thus there would be a gap in the tube.  By Heisenberg, this
sort of structure is rather unlikely...

Andrew Knutsen
Convergent Technologies -- hplabs!pyramid!ctnews!andrew

I speak for myself only...  CT isnt in the time travel business anyway (yet).