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Old 11-08-2010, 05:09 PM
TBG is offline
Join Date: May 2003
Location: Michigan
Posts: 9,067
The time changes hadn't propagated to 2015 yet, so when the Marty and Jennifer of 1985 went to 2015, they were seeing the lives of Marty and Jennifer who hadn't time travelled to 2015. If they'd stayed longer, maybe the whole McFly family would've faded out after a week the way Marty started doing in the Fish Under the Sea dance.