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From: dxm@lanl.ARPA (Douglas Miller)
Newsgroups: net.physics,net.sci,net.philosophy
Subject: Re: A Sane Man Proposes A Time Travel Experiment
Message-ID: <5723@lanl.ARPA>
Date: Fri, 25-Jul-86 19:06:20 EDT
Article-I.D.: lanl.5723
Posted: Fri Jul 25 19:06:20 1986
Date-Received: Fri, 25-Jul-86 23:41:54 EDT
References: <289@axiom.UUCP>
Organization: Los Alamos National Laboratory
Lines: 22
Xref: mnetor net.physics:2468 net.sci:1053 net.philosophy:2208

> [...suggests a time travel experiment...]
> 
> Comments?
> 
> 	>< ...{ decvax!linus | seismo!harvard }!axiom!gts
  
There are a lot of good arguments against the possibility of time travel,
and since you did ask for comments I'll risk the flames for posting a
"not-real-physics" article here.

Time travel violates the conservation of mass and energy laws.  Consider
transporting a 1Kg cube of gold 1 hour back in time.  Then in the universe
of 1 hour ago, there is this extra 1Kg from nowhere, totally unaccounted
for.  Similarly in the here and now, we lost 1Kg of mass, poof, just like
that.  Mass wasn't conserved in our universe.  That, as you should well
realize, is a big no-no.

There are lots of other arguments against it, causality and so forth.  I
just thought that the point above has the merit of being seldom presented.

Doug Miller   
....ihnp4!lanl!dxm   or  dxm@lanl.arpa