Basically, if Marty McFly and his girlfriend Jennifer travel to the future, how are there older versions of themselves in that future? Since the future hasn't been determined yet, there's naturally no guarantee that say you or I would even be alive (much less have children) in said future.
shareYep, this has been said so many times before! I just accept it as part of the fact it is a bit of fun, and the movies were not supposed to be taken seriously! However, if time travel was a real life thing, Marty, Jennifer, Doc and Einstein should have simply disappeared completely, in fact, after about a week or so (in 1985), they would have been on the news for their mysterious disappearance and remembered in history! This is just one reason why time travel would never become legal even if it was real, because people would simply vanish for years when travelling to the future, and families would grieve for them (even if they knew where they'd gone and said goodbye), as well as people going into the past and using time travel for bad deeds!
shareBecause until Biff steals the time machine, the plan succeeds and they return to the past to grow up to become future Marty and Jennifer.
Ever notice once old Biff gets back, and both Jennifer's pass out, all the activity in the neighborhood disappears and there's seemingly no commotion over old Jennifer encountering a home intruder, nor do police come, nothing. That's the moment everything changes around Marty and Doc.
That only works if it's the kind of time-travel story where there can't be multiple versions of yourself.
shareStill better than Interstellar + Gravity + all the other Sci-Fi movies we now get every fall.
shareFuck Interstellar. It's one of the most overhyped and pretencious movies of all time. The "scientific accuracy " behind it is even more of a bullshit than the movie itself.
shareI saw Interstellar at the Palms IMAX in Vegas and I'm still proud to this very day that I walked out about 20 minutes before the ending. I have no idea what the plot was nor do I care.
shareYou see, I got it and stayed until the end... only to be like "okay, what the hyped is all about exactly? This movie was a mess. Back then I was with my ex-girlfriend and she had the exact same reaction.
shareYou’re proud? Lmao what a loser. What a cause you’ve given yourself
share[i]Basically, if Marty McFly and his girlfriend Jennifer travel to the future, how are there older versions of themselves in that future? Since the future hasn't been determined yet, there's naturally no guarantee that say you or I would even be alive (much less have children) in said future.[i]
That makes no sense. This problem (future not set) would happen wether or not they went to the future.
Indeed... but with them gone, it makes things even more messy.
shareThe biggest plot hole is when Doc draws a diagram on the white board explaining how Biff created an alternate 1985. According to the diagram, and the example presented in the first film, when Biff changed the past in 1950 and then travelled back into the future, he should have arrived in an alternate 2015 that had progressed from the alternate 1985 he created. Instead, he changes the past only to arrive in the same future he came from (which renders his actions meaningless), and for some reason (most likely the convenience of the story), Doc and Marty travel back from 2015 to find themselves in an alternate 1985. It's pretty terrible when a movie defies its own logic, and it becomes especially obvious in this scene when they are trying to explain it.
shareYeah, I´ve always hated this one too. There´s a deleted scene where Biff disappears in 2015, but I suspect they removed it because they didn´t want to confuse the audience. The problem is that even with Biff disappearing he was still able to travel to the old 2015, which he should never have been able to do since he gave the book to himself.
shareMy interpretation was that the timeline didn't always alter instantly.
In the first film, when Marty prevents his parents from meeting, the pictures of him with his brother and sister was disappearing slowly. He didn't just pop out of existence immediately, it took most of the week before he started to disappear.
Same here. Biff managed to get away and get back to his original 2015, and Doc and Marty managed to get into the time machine and leave before timeline had altered around them.
The problem with that logic is, Marty had time to repair the damage of his parents not meeting while he was in 1955. He didn´t just immediately travel back to 1985 without making his parents meet and eventually kiss, first. Marty and Doc had been in 1985A for less than a day but Doc already says, they can´t go back to the future to "repair the damage" because they would be on the timeline of 1985A. So Biff going back to the future to give back the time machine to Doc and Marty after already drastically altering the past by giving himself the almanac is essentially the film breaking its own rules on time travel.
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