Thread: Back To The Future Time Travel Discussion
View Single Post
Old 12-31-2011, 01:57 PM   #3
Xero
He's Here
 
Xero's Avatar
 
Posts: 60,735
Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)Xero makes a lot of good posts (200,000+)
http://www.moviemistakes.com/film107/questions

Question: We see Biff groan in pain as he returns to 2015 with the stolen DeLorean. In a deleted scene we actually see Biff fade away as he is erased from existence by his actions. I assume this is because an alternate Biff now exists (or could have been killed) and so he is erased from time. If this happens to Biff, why doesn't this happen to Marty, Doc, and Jennifer? They too are replaced by alternate versions of themselves when they return and even before they return to 1985a. 1985a Biff even says in the film that Marty was in school in Switzerland, and Doc has been committed, so they too should fade away as Biff did, shouldn't they? I would say "time" was giving them time enough to correct things like in the 1st movie, but Biff faded away almost a soon as he arrived back in 2015a.

Answer: Biff faded away because he completely changed his own past. When Marty, Doc, and Jennifer return to 1985, they're returning to the alternate timeline that Biff created. They still exist and remember their own history because without it, Biff's timeline couldn't exist and a paradox would be created.
Xero is offline   Reply With Quote