Back to the Future Part III
Movie Quote Quiz

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.

Jennifer: Excuse me, Doc Brown. I brought this message back from the future and, well, now it's erased.
Doc: Of course it's erased.
Jennifer: But what does that mean?
Doc: It means your futures haven't been written yet. No one's has. Your future is what ever you make. So make it a good one, the both of you.

Doc: Clara was one in a million. One in a billion. One in a googolplex!

Young Doc: Remember, where you're going, there are no roads.

Doc: This'll shoot the fleas off a dog's back at 500 yards, Tannen! And it's pointed straight at your head!

Clara Clayton: I don't dance very well when my partner has a gun in his hand.

Young Doc: Well, good luck for both of our sakes. See you in the future.
Marty McFly: You mean the past?
Young Doc: Exactly.

Doc: Each detonation will be accompanied by a sudden burst of acceleration. Hopefully, we'll hit 88 mph before the needle gets much past 2000.
Marty McFly: Why, what-what happens after it hits 2000?
Doc: The whole boiler explodes.
Marty McFly: Perfect!

Doc: And in the future, we don't need horses. We have motorized carriages called automobiles.
Saloon Old Timer: If everybody's got one of these auto-whatsits, does anybody walk or run anymore?
Doc: Of course we run. But for recreation. For fun.
Saloon Old Timer: Run for fun? What the hell kind of fun is that?

Doc: Marty, you're going to have to do something about those clothes. You walk around town dressed like that, you're liable to get shot.
Marty McFly: Or hanged.
Doc: What idiot dressed you in that outfit?
Marty McFly: You did.

Marty McFly: How many did he have?
Bartender: Just the one.
Marty McFly: Just the one? Come on, Doc!
Bartender: There's a fella that can't hold his liquor.

Doc: Marty, I gave you explicit instructions not to come here but to go directly back to 1985.
Marty McFly: I know, Doc. But I had to come.
Doc: But it's good to see ya, Marty.

Engineer: Is this a holdup?
Doc: It's a science experiment!

Marty McFly: Listen, you got a back door to this place?
Bartender: Yeah, it's in the back.

Buford: 8 o'clock Monday, runt. You ain't here, I'll hunt you and shoot you down like a duck.
Gang Member 1: It's dog, Buford. Shoot 'im down like a dog.

Marty: Clara Clayton was supposed to die in the ravine. All the teachers tell the kids a story about a schoolteacher named Clayton who died in the ravine, and all the kids in town remember it because they all have a teacher they'd like to fall in the ravine.

Doc: Marty, you're not thinking fourth-dimensionally!
Marty: Yeah, right, I have a real problem with that.

Young Doc: All you have to do is drive the time vehicle directly toward that screen accelerating to 88 miles an hour.
Marty McFly: Wait a minute, Doc. If I drive straight towards the screen, I'm gonna crash into those Indians.
Young Doc: Marty, you're not thinking fourth dimensionally. You'll instantly be transported back into 1885, and those Indians won't even be there.

Back to the Future Part III mistake picture

Continuity mistake: When Marty returns to 1985, he goes to his house and gets in his Toyota pick-up. Look closely behind his head when he first gets in the truck, there is no driver-side head rest. But when he picks up Jennifer, when they pull up to the stop sign the head rest is there. (01:45:00)

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Trivia: The band playing at the Hill Valley festival is rock band ZZ Top (two guys with long white beards playing guitar, and a drummer), who wrote songs for the film.

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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

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

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

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

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.

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