Back to the Future Part III

Question: Is "Googolplex" an actual word?

Gavin Jackson
5

Chosen answer: Yes. A "googol" is the number 10 raised to the 100th power, or a 1 followed by 100 zeroes. A "googolplex" is an even larger number - 10 raised to the power of a "googol", or represented as 1 followed by a "googol" zeroes.

BGraz
2

Question: When the 1985 Doc is suddenly transported back to 1885 at the end of BTTF 2 and Marty discovers that he has been murdered, because there is a Doc in 1955 that has already been born after the 1985 Doc has died in the West, why did he go to the trouble of going all the way back to 1885 when Doc was still alive? Is there any actual legitimate time travel reason for this, or did he just do it out of instinct to help his close friend?

chunkz87
3

Chosen answer: According to the letter, Doc plans to live out his life in 1885. But as it turns out, Doc gets murdered a week after sending the letter. Knowing that Doc's plan to live out his life don't come to fruition, and because he's a good friend, Marty travels to 1885 to save him.

JC Fernandez
1

Answer: Technically when Doc got transported to 1885, he should not have existed in 1955 because he died. This is the problem I'm having with part 3. The movie should not have happened this way. It should have been where doc did not exist nor the time machine. Part 3 should've never happened.

That's not how most time travel (if any) stories work. Just because someone dies in the past doesn't prevent them from being born since they were already born and alive before going to the past. Think of it this way, if instead of 1885 he travelled to 2085 and died, would that prevent him from being born? The only reason Marty was in danger of disappearing and not existing (i.e. being born) was because his parents were in danger of never getting together.

Bishop73
2

It was the 1985 Doc that went back to 1885 so he would still be alive in 1955.

1

The Doc that got sent to 1885 was the Doc from 1985 so therefore it wouldn't have affected 1955 Doc at all.

The one in 1955 hasn't done anything 1985 doc did.

Question: Why did Doc faint when he drunk the Liquor?

2

Answer: He simply has an absurdly low tolerance for alcohol, and whiskey is not a wise choice if this is the case. It helps set up the joke when Marty asks the bartender, "How many has he had?", and he replies by telling Marty, "Just the one", as we are meant to think Doc has been in the bar all night drinking away his sorrows.

Jazetopher
3

Question: Doc is quite a resourceful and clever guy. Why didn't he set to work on repairing the flying circuits which would have enabled them to use Mr Fusion to reach 88mph, instead of the engine?

2

Answer: Mr fusion only powers the flux capacitor. The engine is needed to get the car up to 88mph whether flying or not and the only way to get the car any power is by the use of petrol, which didn't exist in 1885.

The_Iceman
2

At the beginning of the movie, when 1955 Doc reads the letter that 1985 Doc sent to Marty, he reads that the lightning bolt activated the time circuits and at the same time destroyed the flying circuits. Because of this, the Delorean will never fly again.

3

These answers are correct. Plus, to the original question: as clever as Doc is, keep in mind he got the flying conversion done in 2015. Definitely no way he would have been able to repair something so futuristic with 1885 tools at his disposal. He couldn't even get gas.

jshy7979

Yet just a few years later he had built from scratch a flying time-traveling locomotive, all with 1885 tools and parts.

jimba

There's no indication he built the flying train in 1885. It's suggested he had been time traveling with his wife and kids and says he's already been to the future. Whether this is in the DeLorean or the train it's not clear, but the dialogue suggests he's been to the future in his train with the family and could have modified his train to fly with future technology.

Bishop73
1

That took years, as you said. They were trying to leave 1885 in a matter of days so Doc wouldn't be shot by Buford.

jshy7979

Question: Doc has always been firm about not wanting to create some sort of paradox. Was he not at all worried that eventually someone would go into his barn looking for him and find his giant refrigerator and his model railway with the car that said "TIME MACHINE" on it? I know he stayed behind after he rescued Clara so could have removed all that, but the original plan was he was going to hop into the DeLorean with Marty. We know he definitely left the model railway there as Clara picked the car up which prompted her to go after him.

2

Answer: Someone would go into his barn and do what? See a sign that says time machine and believe it and then use it? Seems highly unlikely.

lionhead
1

Question: When Marty is in the bar at the morning of the showdown, Seamus shows up there saying something told him that he should be there, as if his future depended on it. Was he right? Did what happened that morning affect Seamus' future?

Paul Pepiton Premium member
2

Chosen answer: Seeing as how Seamus is one of Marty's ancestors and something significant to Seamus' future DID happen that day (Marty didn't get killed), Seamus was definitely right.

Guy
1

Question: At the end of the movie, Jennifer asks Doc about the note she got from the future that became erased when Marty did not participate in the race with Needles. Doc's answer to her question is that her future had not been written yet, and he goes on to say that no-one's future has been, but if that is so, then how come in the previous movies he could travel into the future with Marty to see Marty's future?

2

Answer: What they saw was one possible future, not a definitively laid down one - one of the key plot devices in the series is that making changes in the past will affect the future. As such, what Doc's saying is that, while they've seen one possible future, actions that they take in the present can change it for the better (or worse).

Tailkinker Premium member
1

Question: After Marty enters 1885, in his fleeing from the Indians, the DeLorean's fuel line gets ruptured and it loses all its gas. When Marty tells Doc this, Doc says gasoline doesn't even exist yet. However, Doc's DeLorean, which is now hidden in a cave, has its own gas supply in its gas tank and will not need it anymore, as 1955 Doc would just refill it after getting it out of the cave. Why didn't Doc siphon the gas from his DeLorean, and refill Marty's? He said the only problem at that moment was no gas. Not that he could not patch the fuel line, which would have been easy.

Scott Miller
2

Chosen answer: We don't know how much gas was in the De Lorean when it got struck by lightning - Doc may not have bothered to top-up regularly as he was using the anti-gravity (powered by Mr Fusion) a lot, and also Biff had used the car and may have used up some fuel. As Doc was putting it in storage, he would have drained the fuel before putting it in the mine to prevent damage (and 1955 Doc implies the tank was empty and that he filled it up) He also may have been reluctant to tamper with the car in the 1880s as it could have been damaged or destroyed (by a mine collapse), thus leaving him stranded in the 1880s and Marty in the 1950s with no time machine.

Sierra1 Premium member

Question: For Doc to be so worried about corrupting the timeline in this movie (especially when it comes to falling in love with Clara) he surely doesn't seem to think twice about destroying the locomotive that will no doubt have a huge effect on the timeline. I doubt there were many trains on that railroad, with that mode of transportation now gone, Hill Valley itself could be wiped out.

Carl Missouri
2

Answer: Doc must have reasoned that the loss of the locomotive would have a minor impact on Hill Valley, if at all. The railroad company would likely have replaced the destroyed locomotive. Obviously Doc was correct as there seems to have been no impact on Hill Valley's economy whatsoever and the train lines continue to run into the 1980's.

BaconIsMyBFF
3

Chosen answer: In the timeline that the original Marty and Doc came from, Hill Valley exists so that town obviously survived that incident. An accident already occurred on that day in their history. They just didn't know it was them that caused it.

XIII
1

That is not how time travel works in these movies. In fact, the entire series revolves around the timeline being changed whenever they travel into the past. There are no stable time loops. The train was not destroyed in the original time line.

3

Answer: Corrupting time was a worry for Doc, however, he also recognized that it was at least partially unavoidable. Otherwise, Doc would never even be able to go buy food, because how would he know that the meal he ordered wasn't one that someone else was meant to choke on? Occupational hazard of time travel.

Captain Defenestrator Premium member
1

Question: Back in 1885 why doesn't Doc change the letter he sent to Marty, asking him to bring a can of gas?

1

Answer: When Marty received the letter from Doc in 1955, as seen in the second movie, Doc wrote down that he didn't want Marty to go to 1885 to rescue him because he was happy living in the past. Instead, he wanted Marty to take the Delorean straight back to 1985 and then destroy it so it could never be used for personal gain again.

1

But once Marty appears in the past Doc could easily change the letter, changing things such that Marty would bring gas with him.

That wouldn't really work with Marty already there. Since Marty and Doc are occupying the same timeline, changing the letter wouldn't do anything until Marty traveled back into the future, at which point the altered letter would be unnecessary since they had found a way for Marty to return.

Phaneron Premium member
2

Changing the letter wouldn't have made a difference. When Doc decides to leave 1885, Marty tells Doc that he ripped the fuel line so, with the fuel line damaged and no gas available, bringing a can of gas wouldn't have helped.

1

Answer: This would create a different timeline, not the timeline they are in.

Answer: That would not be possible as in 1885, Doc sent the letter on September 1st, and 1955 Doc sent Marty to 1885 on September 2nd so it was a day later and on the 1st, Doc was not expecting Marty to turn up. However, one CAN ask why Marty and Doc didn't go to the local Western Union office and change it (or write a new one) there since it was in their possession per the gentleman in part 2.

Changing the letter while Marty is in 1885 with Doc would accomplish nothing, because it doesn't it instantly travel to the future. Marty at the end of Part II, for his part, may receive the letter almost immediately, but the letter itself had to wait 70 years to be delivered to him.

Phaneron Premium member

I mean, there's no solid rules to time traveling, but just for argument's sake it seems like the letter idea could work... in the franchise, when something is set in motion, the effects usually take place immediately. Take for instance when George and Lorraine kissed at the dance in Part 1. The picture of Marty and his siblings went right back to normal, even though the kids had not been born yet. Doc and Marty changing the Western Union letter "could" have had an immediate effect and a gas can could have materialized in the Delorean, much like we've seen newspaper headlines change before our very eyes, disappearing gravestones, etc.

jshy7979

In your examples, the changes occur to future events. The items that changes, like the picture and newspaper, are from the future themselves. They can't change the past by changing events in the future (like they do in Bill and Ted's). This is why Doc and Marty couldn't go back to 2015 to stop old Biff from taking the DeLorean.

Bishop73

Question: When Marty and Doc are on the train at the end, and Clara shows up, Doc says that Clara will have to go with them to 1985. Why does Doc say that? Someone submitted a correction saying that Clara is better off in 1885 because she was supposed to die so staying in her own period is better than going to the future, so why would Doc suggest such a thing?

1

Answer: Simply because, believe it or not, it's hard for Doc to kill someone through inaction. He saved her life when she was supposed to die. But that doesn't mean it'd be easy for him to do nothing now and just let her die when he knows he can do something to save her. And by taking her to the future, he is likely thinking he can avoid any other complications that may arise from the fact that she is still alive when she's already supposed to have died.

Garlonuss Premium member
1

Question: On the time traveling train there is the initials E.L.B, does anybody know what this stands for?

1

Answer: ELB are the Doc's initials - his name being Emmett L. Brown. Earlier in the film these initials were also seen on a plank of wood in the mine indicating to Marty where the time machine had been buried for 70 years.

Chimera Premium member
1

Question: At the end of the film, which Clint Eastwood is Dave McFly referring to when he tells Marty "Who are you supposed to be, Clint Eastwood? Was he referring to the real Clint Eastwood or to 1885 Clint Eastwood? (Marty's alias in 1885).

1

Answer: Since Marty is dressed the same way Clint's character in the spaghetti westerrns was, I pretty sure he was referring to the real Clint Eastwood.

Gavin Jackson
3

Answer: The joke is that Marty as Clint Eastwood has become a historical figure, known probably only in their town. His clothes are probably most remembered, so Dave thinks he is impersonating him.

lionhead

Question: Heres something that never made sense to me. I could see how Marty's great-great-grandfather Shemus could resemble Marty (so Michael J. Fox plays him), but why would his great-great-grandmother Maggie McFly resemble his mother when this is his father's side of the family?

Carl Missouri
1

Chosen answer: This has been covered before. Men tend to be attracted to women who remind them of their mothers, so the McFly men would be attracted to a certain "type" throughout the years until we get to George meeting Lorraine.

Captain Defenestrator Premium member
1

Question: On the movie timeline website it says that on November 6 2012 America elected a female President, and that this fact comes from Back To The Future Part III. Where in the film is this mentioned?

1

Answer: It's actually mentioned in Part II, when Marty and Doc are reading the newspaper. If you look at the headlines on the left side of the page, one of them reads, "President says she's tired of..." As this is in 2015, pending changes to US election dates, she must have been elected on November 6th 2012.

1

Question: Doc is a scientist right? The DeLorean had a ruptured fuel line and needed gas which, as Doc pointed out, was unavailable at the time. Surely he knew how to distill booze to make ethanol? (There was plenty of whiskey around at the time). I mean, they've used it to power cars in Mexico for ages. Why didn't Doc suggest this?

Bodragon
1

Answer: They did try it. Doc ran the engine with the strongest thing the bartender could find them and it blew out the engine. It takes all the power a heavy car like a DeLorean has to get up to 88 MPH. It wouldn't be able to get that much power running on ethanol, in addition to the damage caused to the engine.

Greg Dwyer

Question: What is the name of the music that plays right after the mayor gives his speech at the clock dedication?

AdmRose
1

Answer: The song is called "Battle Cry Of Freedom" written in 1862 by American composer George Frederick Root during the American Civil War.

1

Chosen answer: The song (right after the mayor's speech) is actually "Nearer, My God, to Thee" of Titanic infamy, but with an upbeat tempo. This plays the moment the clock is engaged and ends after the photograph is taken.

Question: Doc Brown shows up at the end of part three with his wife Clara, his two boys, and a time-traveling, hovercraft-converted train. How did he build it? There was nothing in 1885 that could even begin to help him build another time-machine! And don't tell me that he used Marty's 'hoverboard' as parts, because that doesn't wash.

CCARNI Premium member

Chosen answer: Time machines don't actually exist, so who are we to say whether or not the parts to build another time machine are available? Doc Brown is an inventor. Doc had the knowledge of how to build a time machine having built the original machine into a DeLorean, Doc also appears to have had a few years to come up with a way of building a time machine into a train, given that he now has children who appear to be around 5 years old. Plus, remember that the fridge in Doc's shop was much bigger than a modern fridge, and a steam train is way bigger than a DeLorean.

Blair Howden
4

Answer: Doc's consistent problem was finding high-energy power sources for his inventions. But, actually, materials and technology did exist in the late 19th Century to construct extremely high-energy components. If Doc Brown had contacted electrical geniuses of the day (such as Nikola Tesla, who was already working in high-energy physics, radio and and X-ray technology in the 1890s), he could have certainly acquired the materials to reconstruct the Flux Capacitor and back-engineer hover pads for his time-travelling locomotive. As we saw earlier in the film, he was quite capable of back-engineering 1980s electronics using 1950s components (when he repaired the DeLorean).

Charles Austin Miller

Question: In 1955 when Doc and Marty are in the outdoor cinema and Marty is accelerating to 88mph to jump back in time to 1885, doc shouts something to him in celebration as Marty Drives past him, he also fires his gun in the air... Do you know what he shouts? The subtitles just say "shouts something in Spanish" but id love to know what he said and what it means?

TDFarthing

Chosen answer: "Vaya con dios!", Spanish for "Go with God".

Sierra1 Premium member
2

Answer: The subtitles are wrong! I always heard him shout "to the ends of the Earth " A reference to Jules Verne (keeping that theme running all through the third movie) and to Marty's adventures. Not only is this what I've heard every time I've watched this film, but it makes much more sense.

This is incorrect. He does in fact yell "Vaya con dios." The scene is available on Youtube and he can be seen and heard saying it at the 2:47 mark. https://www.youtube.com/watch?v=zV9udBGZio4.

Jason Hoffman
1

Question: Why does everyone say that using parts of the DeLorean that Doc had buried in the abandoned mine could create a time paradox? Firstly, that is never stated in the actual movie. Secondly, if say Marty and Doc use the part on the buried DeLorean to fix the DeLorean that broke due to the explosion caused by the extremely strong alcohol and then again try to run the DeLorean using alcohol that's not so strong, the 1955 Doc would be able to obtain the missing piece of the buried DeLorean. So, technically, there's a plot hole. Why then does everyone say that that's not possible?

Answer: If they dug up the buried DeLorean and stripped it for parts to repair the other one, then it would become non-functional. As such, with no replacement parts being available in 1955, Marty would not then be able to use it to come back in time to rescue Doc - which he's already done. There's your paradox.

Tailkinker Premium member
2

Answer: But it's not a paradox is it. They blew the fuel injection manifold which Doc says would take him a month to rebuild, that's using 1885 technology and parts. Simply swap out the manifold off the buried car, put the broken one on the seat, and 1955 Doc would inspect it and figure out that it needs repairing (which would take far less time using 1955 technology and parts). They could also go to Western Union and change the letter to read that the fuel injection manifold needs a repair as well. If they stole the DeLorean' engine then yes they'd be a paradox as the very earliest replacement wouldn't be available until 1974. But stealing parts that would be available in 1955 would not cause any paradox as they could simply replace them.

Back to the Future Part III mistake picture

Continuity mistake: Watch the scene with the Indians (just as Marty sticks the DeLorean into reverse) and see the differences of how close and far the Indians are from the DeLorean. (00:18:59)

More mistakes in Back to the Future Part III

Doc: Marty, the idea that I could fall in love at first sight! It's romantic nonsense. There's no scientific rationale for it.
Marty: Come on, Doc. It's not science. You meet the right girl it just hits you. It's like lightning.
Doc: Marty, please don't say that.

More quotes from Back to the Future Part III

Trivia: Director Robert Zemeckis asked for Clint Eastwood's permission to use his name for BTTF 3. Clint Eastwood felt so honored that he said yes.

More trivia for Back to the Future Part III

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