Back to the Future Part II

Corrected entry: When Marty buys the sports almanac, how does he get the money to do it? Considering a Pepsi costs 50 bucks, the almanac probably costs several hundred dollars. How many teens from the 1980's just happened to have that amount of money in their wallet at any given moment? He didn't get the money from Doc since Doc didn't even know he bought it until after the fact.

calidude

Correction: He used his thumb. We see Future Biff use his thumb to pay for the taxi.

Corrected entry: Marty sees himself talking to his parents one last time before his other self goes to meet Doc at the clock tower. At this point Biff steps up to Marty and comments on his disguise. The problem here is that in the first movie Biff is never seen again after George punches him. If he had woken up he would have been there to confront the first Marty at the door after telling his parents about the burned carpet, or even George for hitting him. So what happened to Biff the first time if he wasn't there when '55 Marty walked out the door?

Correction: The simple answer is 'because in the first movie things didn't happen that way'. By turning up in 1955, the versions of Marty and Doc from this movie changed the way events played out in very minor ways. A big plot point in this section of the film is Doc's instruction to Marty to stay out of the way as much as possible and ensure events eventually play out the same way as in the first film, so that George knocks out Biff then kisses Lorraine at the dance, and the 'original' Marty makes it to the clock tower none-the-wiser. Biff only went looking for the 'second' Marty because he noticed him after he came around from being knocked out by George (when he stole the almanac). This didn't have happen in the first movie's timeline, likewise Marty didn't stop and notice three unconscious members of Biff's gang when he left the stage. This is entirely consistent with the BTTF trilogy's depiction of how time travel works.

Corrected entry: After Doc and Marty leave the cafe 80's to get Jennifer back from her 2015 house, you see old Biff retrieve the sports almanac from the trash can, he then audibly says "so Doc Brown invented a time machine!" Next scene in the DeLorean, Doc says he thought he saw something in his rear display, a shot of a yellow cab is then displayed. No way for old to Biff get a cab and catch up so fast, as the DeLorean had been parked in an alleyway, with no cab in sight.

John D 619

Correction: Yes but he knew exactly where they were going because he was listening to their conversation. He could have told the cab driver where to go and when he saw the DeLorean told the driver to follow it.

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

Corrected entry: In 2015 when the police get 1985 Jennifer to her home it's daylight, and they say "it's gonna be night time when we get there" but if they are flying that trip should be only a few minutes.

ozwal13

Correction: Doc, Marty, and Jennifer arrived in 2015 at 4:29 PM, already later in the afternoon. Doc also mentions that the skyway was jammed, meaning it would take flying cars longer than normal to arrive at their destinations. It's perfectly plausible that it could be dusk/dark by the time the police get 1985 Jennifer to her "future" home.

Corrected entry: Doc and Marty could not know where the 2015 Marty lives and go there to get 1985 Jenifer.

ozwal13

Correction: Doc's clearly done a lot of research into Marty's family, knowing what happens to them, who his kids are, etc. Knowing where he lives would be part of that.

Corrected entry: When Doc and Marty are in the altered 1985 where Biff is in charge we find out that Doc Brown has been in jail for quite a while. Shouldn't the Delorian have started to fade because Doc never built it? That's what happened to Marty in the first movie.

Correction: The series establishes that it takes several days to a week or more before changes start to retroactively impact the timeline. Just like when Marty and Jennifer went to the future, they would have to be in the alternate 1985 for quite some time before the DeLorean began to fade out of existence.

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

Corrected entry: When Marty confronts Biff in 2015 and asks when, where, and how he got the sports almanac, Biff retrieves it from a safe and a lock box and carefully shows it to Marty. Because the almanac contained results from sporting events through the end of the century (the year 2000), it would have been rendered worthless 15 years before and would therefore no longer need to be kept in a safe, if even at all.

jds122567

Correction: No, this scene takes place in 1985 (Marty and Doc were trying to return home from 2015 and discovered the "bad" 1985 instead of theirs), so the almanac still contains fifteen years' worth of future information.

Tailkinker

Corrected entry: When Marty goes to the cemetery, it says his dad was born in 1930 and died in 1973. If the Enchantment Under the Sea dance [George's senior prom] was in 1955, that would have made him 25 at the time.

Correction: I just saw that scene it clearly reads born in 1938, making him 17 in 1955.

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

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

Corrected entry: When Marty's son walks by young Jennifer in the hallway of his home, he thinks is the older Jennifer and says "Hi mom, nice pants". Later at dinner, Marty Sr. and Lorraine are talking about how Jennifer is late coming home. Marty Jr. is sitting right there and doesn't even mention how he just saw his mom in the hallway.

calidude

Correction: He's a teenage boy. Not always the most observant or helpful.

shortdanzr

Corrected entry: In the year 2015, Marty's daughter Marlene is telling Lorraine that the reason the scenery channel isn't working is because the scene screen repairman called Marty a chicken and Marty threw him out of the house. Why would the repairman call Marty a chicken? Nothing at all makes sense about this, what could possibly provoke a repairman to call the owner of the home he was working in a chicken ? Even if Marty was rude to him, it would make more sense to just call him a jerk, not a chicken. Calling him a chicken likely means he was goading him into a fight and there is no logical reason for some repairman to want to pick a fight with someone he is servicing.

calidude

Correction: As we have no information regarding what happened, it is somewhat absurd to attempt to base a mistake on personal speculation regarding a trivial conversation that took place off-screen. It is unlikely, yes, that a repairman would call a client a chicken, however, as we are not made aware of any other details of the incident, it certainly cannot be said that it could not have happened.

Tailkinker

Corrected entry: After Marty burns the sports almanac, it is only burning for a few moments before it begins to pour rain. There was not enough time to burn the whole book, considering he started the fire with some cheap matches and no gas or lighter fluid to make it burn faster. Some of the pages may have survived. There would have been water damage from the rain on the remaining pages for sure, but a few pages may have still survived and have been legible enough for a passerby (or maybe even the western union guy) to be able to read and use to make bets.

calidude

Correction: Yes, but since Marty and Doc see the timeline change in response, it was enough to do the job.

Grumpy Scot

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

Corrected entry: The cooling vents on the back of the DeLorean change between silver and black throughout the film. A clear example of this is the first landing scene of the DeLorean in the alley in 2015.

Correction: It's not silver, it's frost. The car freezes whenever it goes forward in time.

BocaDavie

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

Corrected entry: After Biff steals the DeLorean and travels back to 1955 with the Sports Almanac the movie states that he creates an alternate time line. Doc Brown does a good job of illustrating this on a chalk board. So if, as Doc Brown states, Biff created an alternate time line, then when he travels back to 2015 it would be the year 2015 on the alternate time line.

Correction: It would be if he traveled back to the year 2015, but they didn't. Doc and Marty traveled to 1955 when Biff originally received the almanac. They then obtained the almanac and burned it, in doing so it changed the future back to the way it was before the alternate universe was created.

liljojo79

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

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Quotes

Marty: You're not going to believe this. We have to go back to 1955.
Doc: I don't believe it!

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Mistakes

Notice Marty's hair in the scene when he's playing "Johnny B. Goode." It's quite larger than when he says, some seconds later, "I guess that you're not ready for it yet." That's because when he says that, it's a recycled shot from the original BTTF, whereas most shots showing he's playing the guitar are newly made for BTTF2. However, Marty's hair is considerably longer in the new shots.

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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.

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