Question: When Marty comes back to a "new" 1985, his family has money, his siblings are now successful, they treat Marty like he never left (except to go to the lake). But before he supposedly went to the lake, didn't Marty act normal? Didn't Marty grow up with this new and improved family and have different experiences that didn't happen when they were poor? If so, why does he have no memory of this? If Marty grows up with money, has a successful father, a sister that's popular, what happens to "this" Marty? The one that grew up differently now that he was born into a richer family? (This can't be the same Marty that goes back in in time that we see at the end of the movie, because if that Marty will do everything we saw in the movie, he's the same Marty before anything changed. Like when he said his dad never stood to to Biff in his life).
Question: I have a question and this has bothered me for years. How did Doc know the exact date and time to wear a bulletproof vest by reading Marty's letter? We see what Marty wrote and it says "The night I go back in time" before he puts it in Doc's pocket but it never said the exact date or time of when the terrorists would attack Doc after Marty came back in 1985?
Question: When Marty arrives back in 1985 in the first movie, he leaves the DeLorean behind near the clocktower to chase after the Libyans because it stalls on him. There are now two DeLoreans in 1985; the one at Lone Pines Mall that gets used for the rest of the series until its eventual destruction, and the one near the clocktower. What happens to the latter?
Question: Just wondering out loud. Since Marty showed Doc the drawing of a flux capacitor in 1955, I think this would have caused some infinite loop in the universe. I'll explain it better. Wouldn't Marty have destroyed the universe because he showed Doc the time machine in 1955, meaning Doc wouldn't have had the machine tested out in 1985 because the design was already "completed" in 1955? Meaning Marty never would have gone back in time in the first place to show Doc the time machine, meaning that Doc would test it out in 1985. Meaning that Marty would have gone back to 1955 and showed Doc the time machine, meaning Doc wouldn't have tested it out in 1985, meaning Marty wouldn't have gone back in time and showed Doc the time machine, etc.
Question: Given that the entire McFly family's circumstances have changed at the end of the movie due to Marty altering the past, shouldn't Marty's whole life have gone down a completely different path from childhood on? What are the odds that he even still knows Doc and Jennifer in the revised 1985 (let alone has the exact same date planned with Jennifer for the very same evening), given that everything else has changed?
Question: I'm really confused, and need help with this. I saw the second BTTF, so I saw the scene when Doc explains the two timelines and changing the future, but I'm still confused. If what Doc said was true, when Marty got hit by the car, he would have changed the future by preventing his parents from marrying. Therefore, there are now several timelines in the movie all going off at the same time. According to the movie, the first one is a timeline where Marty goes into the time machine back to 1955, and he has a loser for a father. There is also a timeline just like the first one, but George punched Biff, making him cool in the future. Another, alternate timeline is also present where Marty's parents haven't married, Marty doesn't exist, and none of the events from the first two timelines happen in this timeline. However, if this were true, all three timelines would have to be there, as Marty jumps from timeline to timeline in the movie and then in the end, watched himself do it again. First he would be in the regular timeline, then as he prevents his parents from meeting, he is in the other timeline. As he puts his parents back together and goes to 1985, he is now in the "cool father timeline". That is how I see the movie. Can somebody help shed some light on the subject for me?
Question: If Marty and his brother and sister are fading from the photograph because they are being erased from existence, wouldn't that mean that the moment when the photograph was taken would also be erased from existence? If so, why doesn't the photograph itself disappear instead of just the people in it?
Question: What is George's working status with Biff at the end of the film? George mentions in the beginning that Biff is his supervisor so I assume Biff is George's boss but at the end of the film it is implied that Biff seems to be working for George or is George still working for Biff, but Biff is no longer bullying George?