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From: Daniel.Zigmond@CMU-CS-SPICE.ARPA
Newsgroups: net.sf-lovers
Subject: Back to The Future (SPOILER)
Message-ID: <2694@topaz.ARPA>
Date: Fri, 12-Jul-85 16:27:32 EDT
Article-I.D.: topaz.2694
Posted: Fri Jul 12 16:27:32 1985
Date-Received: Sat, 13-Jul-85 15:42:19 EDT
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Organization: Rutgers Univ., New Brunswick, N.J.
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From: Daniel.Zigmond@CMU-CS-SPICE


***SPOILER***

The one thing that bothered me about Back to the Future wasn't that it
made use of parallel universes but that it seemed to use them wrong.  Marty
changed both universes.  The changes to the universe he returned to
were obvious: his parents had dfferent personalities, he had a new truck,
etc...  However, he also changed the universe he left.  He invented
rock and roll (essentially).  While he is playing Jonny B Goode at the
dance (in 1955), the guitarist with the broken arm (whose name was
something Berry) calls his brother "Chuck" to tell him about this great new
style of music that Marty is playing.  This means that universe 1 (where
Marty started) shouldn't have had any rock music in it because Marty wasn't 
around in 1955 to let Chuck know about it.  Of course, it did because
otherwise Marty wouldn't have known the song (or have been in a rock
band).  

	Dan (djz@cmu-cs-spice)