Back to the Future Part II

Corrected entry: When the "old Biff" steals the time machine in 2015, as Doc and Marty attempt to retrieve Jennifer, it shouldn't be possible for Biff to return to the world that exists around him, as he gets out of the car back in 2015. Doc, Marty, Jennifer, and the world around them ALL should no longer exist, while still trying to escape from 2015. An alternate time line should have been created the moment "old Biff" left 1955. (Thus, Doc's explanation to Marty via the chalkboard explaining an "Alternate Reality"). This all started in 1985, and one result of old Biff's ventures, we learn that Doc is committed to an institution and couldn't even invent, or at least complete, the time machine by October 26th, 1985, which is the starting date of the initial film.

BLuRD

Correction: It is pointed out in all 3 films that the time lines aren't altered immediately (e.g. In the first film, Marty and his siblings fade out of the photograph that he holds, rather than just simply disappear). Just because Doc didn't invent the time machine doesn't mean someone else didn't instead (it is possible Marty did it himself using Doc's notes).

Andy Benham 6979
1

Corrected entry: When Biff and his gang crash through the windows of the clock tower with their hover boards, Marty goes to give his back to the little girl, but she says "keep it, I've got a pitball now" and shows him Biff's hover board. Only problem is it's still in the clock tower wreckage, attached to the other 3.

Correction: There's a split second shot of the Pitbull leaving Griff's feet and flying away. The direction it went and how far isn't shown. It could easily have gone where the little girl could pick it up.

Grumpy Scot
1

Corrected entry: When Old Biff hands Young Biff the Almanac, the book passes through the film split (the vertical bar that divides the windshield) perfectly because it was on a motorized rig. But the stand-in for Old Biff didn't hold his arm at the right height, so Old Biff's arm disappears into the bar that runs down the middle of the window while the book floats across to Young Biff.

Correction: No it doesn't. The arm is below the windshield, that is why it can't be seen. The tip of the hand is perfectly visible, with no missing parts.

Sacha Premium member
1

Corrected entry: Considering the sports almanac contains 50 years of statistics in all major sports, it is very small and thin, about the size of a magazine. This would work if it only contained major sporting event results (super bowl, world series) but obviously it doesn't. It has results from horse races in small towns like Hill Valley listed and regular season college football scores. The font size of the printing in the book would literally have to be microscopic in order to contain all the info it does. Even college football alone, listing just Division 1 teams, would require several hundred pages.

calidude

Correction: Based on the information in the film, we actually know very little about the almanac itself. It could just be a local or regional publication, and therefore focus on a limited range of scores/results. Granted, the font would have to be quite small, but not unmanageable (especially if there were no graphics).

Xofer
1

Corrected entry: In the scene where Doc lands the DeLorean in pouring rain in 2015, after a while the rain stops, and it is sunny and you can see the clock tower is in full light when Marty looks at the newspaper. But when Marty, after putting on his new clothes, walks on the street, it is cloudy again.

Correction: As the submitter mentions the rain stops suddenly and it's sunny. Apparently there are some rapidly-moving clouds in the area; altogether possible for it to be overcast again within a few seconds.

BocaDavie Premium member
1

Corrected entry: When Marty and Doc successfully save Marty's son from going to prison in 2015, the USA Today headline spontaneously changes while Marty holds it. If this is possible, then, when Biff steals the DeLorean to deliver the almanac to his younger self, Marty and Doc's memories would be instantly replaced by those of the alternate 1985 - which would mean that Marty would not be baffled by bars on his windows or locks on his gate when he arrives back home there. In fact, they wouldn't have returned to that house at all.

Correction: Throughout the course of the three films physical objects change but Doc and Marty retain the bulk of their memories from alternate time lines, apparently protected from time line changes. Since it's all science fiction we'll have to assume it works the way it is shown in the film.

BocaDavie Premium member
1

I would add that there seems to be a proportional relation between the historical event being altered and when the change takes root. Thirty years between alteration and changed result seems to take nearly a week. The event of the arrest and trial is only a day (two at most) in the future. Thus, presto-changeo.

Corrected entry: When Marty goes to the new 1985 and goes into the house he thinks is his, a Dirty Dancing poster can be seen on the girl's bedroom wall. Dirty Dancing was not released until 1987.

Correction: This is a very altered version of 1985, so it doesn't have to conform to the original timestream. For instance, Biff may now be responsible for providing the funding that gets the movie made earlier.

JC Fernandez
1

Corrected entry: Towards the beginning, when Marty returns to 1985 and walks up to Biff's hotel he runs into the town drunk and refers to him as "Red." Red was the mayor in 1955, shown in the first movie when a campaign van is driving around the town square saying "Re-elect Mayor Red Wilson".

Correction: This is not trivia, this is part of the plot.

Greenman37
1

Corrected entry: How did 2015 Biff know how to operate the time machine well enough to get himself back to see 1955 Biff? He learns about the existence of the time machine from an overheard conversation, which does not include any details of how to set the time circuits nor the requirement to accelerate the car to 88 mph in order to start the time jump.

Correction: This is a question, not a mistake. Given that the time circuits are not that complicated (it's a keypad with a display clearly marked DESTINATION) and that Biff also saw the time machine in use in 1985, it might not have taken him very long to figure out: 1. Punch in numbers and 2. Go fast. Not that he needed a short amount of time to figure out. This is a time machine, after all. He could have stolen the Delorean and then spent weeks figuring it out, with Doc and Marty none the wiser as long as he returned it to a time moments after he stole it. Not to mention that Doc may have left materials (like the videotape of the Delorean's test run from the first film) in the car that could have facilitated Biff's figuring it out.

JC Fernandez
1

Corrected entry: After Marty gets a crack shot on wild gunman, the screen is black. But when you see the arcade machine, just before Marty Jr. says, "Griff, guys, hey," you see the screen is on.

DeathGawd

Correction: There are twenty seconds between the two shots in question. The 30+-year-old machine could simply have been resetting itself after Marty had scored his "crack shot."

JC Fernandez
1

Corrected entry: Doc puts Jennifer to sleep because she was asking too many questions about her future, and according to him, no-one should know too much about their future. But when they have landed in 2015, Doc doesn't see anything wrong with telling Marty, at length, what is going to happen to Marty in his future.

Correction: Character decision, not a movie mistake. Marty is already completely informed about the time machine. Doc is taking a calculated risk that the 1985 Marty can fix this one event (that ruins his kid's lives) without severely disrupting the existing time line (from 1985 to 2015). Doc does not disclose any information to Marty about his future, only about the future of Marty's kids. Putting Jennifer to sleep with the hopes of making her think it was all a dream would ensure that she does nothing to disrupt the time line.

BocaDavie Premium member
1

Corrected entry: In Back to the Future 1 after Marty goes to 1955, you see a sign that says "Hill Valley 2 Miles". Later in the movie, Marty talks to George and Lorraine then walks out the door. The next scene you see Marty with Doc in his 1985 explaining that he needed to change his clothes, and than there is the whole sequence where Marty goes back to 1985. In 1955, in Back to the Future 2, Marty is standing outside the gym when Biff approaches him. Marty is knocked down by his earlier self, and Biff steals the Almanac. Then Marty steals the Almanac, burns it, sees Doc get struck by lightning, receives the telaeraph, runs 2 miles back to Hill Valley, just to meet Doc after his previous self goes back to 1985. How is it possible for on Marty to do the thing previously stated, while the other one dresses and drives to the Clock Tower, taking up the same amount of time?

Correction: You explained the nit yourself. We don't know how long it took for Marty to change into his 1985 clothes in Part 1... we only know that according to Doc, Marty was late in meeting him. Marty may have gone back to Doc's house to get his clothes, adding some time.

JC Fernandez
1

Corrected entry: When 1985 Marty first puts on the "future jacket," the sleeves are really long (can't see his hands or anything), but after Doc comes up (and before he pushes the button to make it fit) you can see Marty's fingertips, and the jacket only goes up a short bit.

Correction: Marty is holding the sleeves up. That's why you see his fingers.

Jason Hoffman
1

Corrected entry: In the Cafe 80's scene, when the future Marty has ordered a Pepsi and Griff walks in, the Pepsi bottle changes from in his hands to on the counter several times between shots.

Correction: He is holding it the entire time. There are other bottles on the counter.

Jason Hoffman
1

Corrected entry: The two theories of time travel displayed in the Back to the Future series seem to conflict with each other. In the first movie, Marty changes history to create a future where he was never born, and as a result he begins to fade out of existence. In the second movie, Biff changes history to create a future where Marty is away at boarding school, but rather than fading into his new timeline, Marty stays exactly the same. There are now two Martys, one from 1985 (Marty 1) and one from 1985A (Marty 2). If that's the case, then Marty should have stayed exactly the same in the first movie (Marty 1) and returned to an alternate universe where his other self (Marty 2) was never born.

Correction: The first movie also establishes that the irreversible changes in the timeline are not instantaneous. Marty was in 1955 for a week before he started fading away. He was only in 1985A for a few hours.

JC Fernandez
1

Corrected entry: When Marty is talking to the Doc when he is in the back of Biff's car, it shows the present Doc with the past Doc's hair (i.e. the actor has the wrong wig on). It cuts back to Marty, then back to the Doc, where he still has the past Doc's hair. When it cuts back to the Doc a third time, he has the present Doc's hairstyle. (01:09:30)

Correction: No such thing. First, since the only two scenes Christopher Lloyd played "young Doc" (when "old Doc" runs into him and when Marty runs around the corner) both took place at the clock tower at night, there would be no reason for the actor to wear the wrong wig. Secondly, "young Doc" has wavy, blond hair while "old Doc" has white hair. The Doc talking to Marty on the walkie not only has white hair, it's the same white hair. The only difference in the shots you're mentioning is that the wind is blowing in the third of the shots.

JC Fernandez
1

Corrected entry: During the scene where Marty has to duck and move past the car with his other self and Lorraine inside the car, he hears his other self ask Lorraine if she smoked too, in which she replied, "You're beginning to sound just like my mother." Then Marty hears his other self say, "Yeah right.". Problem is, in the first Back To The Future, after Lorraine said that, Marty never said "Yeah right."

Correction: We don't know that. In the first movie, after Lorraine says her line, Marty gives her a quick look and it cuts to another scene. He may very well have said "Yeah right" after the cut.

Jason Hoffman
1

Corrected entry: When Doc runs to the end of the alley and takes out his hi-tech binoculars you can't see Marty by the De Lorean down the alley.

Correction: This is because Marty is bending down into the car, out of view.

1

Corrected entry: When Doc and Marty are in Doc's house in the alternate 1985, Doc sets up Einstein's doggie bed and the dog jumps in. From one angle he starts to turn around to his right, but in the reverse shot he turns to his left.

Krista

Correction: Have a look next time you see a dog doing this - the circle rapidly one way, then reverse, then reverse again, and finally settle down. That's exactly what Einstein is doing.

1

Corrected entry: Every time the same actor is playing two people (eg old Biff and young Biff), the line from the splitscreen is covered by something (the framing on the car, a pole).

Correction: This isn't trivia, it's just vague guesswork - when Marty picks up his 'son' behind the bar of the diner, or when old Marty and his two kids have pizza there is nothing to 'hide' the split, it just goes through the frame somewhere between them.

Madstunts
1

Continuity mistake: When Marty (the Marty wearing the dark clothing) is at the dance and the Marty of 1955 is on stage is about to sing Johnny B. Goode, you can hear the 1955 Marty saying "this is a blues riff in B, watch for the changes and try to keep up" through the microphone. Yet in the original, Marty looks away from the mike when he says this and is unamplified. The quote is different as well. He says "this is a blues riff in B, watch for the changes and try to keep up" in part I, but in part 2 he says "this is a blues riff in B, watch me for the changes and keep up, OK?" (01:24:25)

More mistakes in Back to the Future Part II

Biff: Look, Lorraine, you walk out that door and I won't only cut off you, I'll cut off your kids.
Lorraine: You wouldn't!?
Biff: Oh, wouldn't I? First your daughter, Linda. I'll cancel all her credit cards. She can settle her debts with the bank all by herself. Your idiot son, Dave. I'll get his probation revoked. And as for Marty. Well, maybe you liked to have all three of your kids behind bars just like your brother Joey. One big happy jailbird family.

More quotes from Back to the Future Part II

Trivia: In an interview, the director stated that hoverboards were real, but they weren't on the market because parents didn't like the idea of floating children. He said this as a joke, but this didn't stop mass hysteria as thousands of kids went from store to store looking for hoverboards.

moviedude345
More trivia for Back to the Future Part II

Question: When Marty is playing the guitar after he get fired in the future, Jennifer is trying to sneak out and while he's playing, she stops and turns around to look at Marty. Why does she do this? It made no sense, she could have been caught. Was he playing their "special" song or something?

Carl Missouri

Chosen answer: It is because Marty used to be a very good guitar player. After his accident, when he broke his hand, he couldn't play very well anymore. Jennifer stops in shock that he is playing so horribly now. She is used to him playing the guitar greatly.

SAZOO1975
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