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From: tainter@ihlpg.UUCP (Tainter)
Newsgroups: net.startrek
Subject: Re: "City at the edge of forever"
Message-ID: <1525@ihlpg.UUCP>
Date: Mon, 6-Jan-86 18:55:44 EST
Article-I.D.: ihlpg.1525
Posted: Mon Jan  6 18:55:44 1986
Date-Received: Tue, 7-Jan-86 04:14:44 EST
References: <2322@ukma.UUCP> <8800017@convexs>
Organization: AT&T Bell Laboratories
Lines: 8

>Did anybody ever wandered why when McCoy goes through the portal
>and Enterprise vanishes, the landing party intelf doesnt disapear?

This is a property which must appear in all time travel into the past
to avoid the GRANDFATHER CLAUSE (that is eliminating oneself-- usually
stated as going back and killing your grandfather).  The best explanation
for this phenomenon is divergent time lines.  This is NOT the one used
in ST time travel.