How Come The Replacement Marty Had EXACTLY The Same Date Planned On The Same Night? Possible Plot Hole?
The replacement Marty - who I think just gets wiped out when Marty returns from 1955 - has not only the same girlfriend but has planned exactly the same date on the same night and location as the original Marty had before going back in time.
Now the result of Marty's time meddling is an entire lifetime's worth of growing up in a much more confident, successful family environment for the replacement Marty. Yet he has, inexplicably, arranged exactly the same date with the same girl! What would be the odds of this possibly happening?
Surely this falls into the realm of a possible plot hole. Although I confess I am not an expert on such events, so perhaps someone else could confirm one way or the other...