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From: mjc@cmu-cs-cad.ARPA (Monica Cellio)
Newsgroups: net.movies
Subject: Re: Somewhere in Time
Message-ID: <245@cmu-cs-cad.ARPA>
Date: Sun, 20-Jan-85 04:13:41 EST
Article-I.D.: cmu-cs-c.245
Posted: Sun Jan 20 04:13:41 1985
Date-Received: Mon, 21-Jan-85 03:39:46 EST
Organization: Carnegie-Mellon University, CS/RI
Lines: 18

From: moncol!john (John Ruschmeyer)
>Related to this paradox is something called the "Grandfather Paradox". As I
>recall it deals with whether or not you could travel back in time and kill
>your grandfather (before he met your grandfather), thereby preventing your
>being born. Most authors avoid this problem by reducing it to a version
>of the former.

One explanation I've heard is that each person has his own
personal time line.  Sure, you can travel back along *your* line and kill
your grandfather, but (1) you won't affect anyone *else's* timeline (like,
your brothers and sisters will still be around) and (2) you will cease to
exist.  This is described more completely in "The Men Who Murdered Mohammad"
by Alfred Bester.

						-Dragon
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