One thing I didn't get.


I loved this move, but...

In the ad, he said he had only done it once before, but never said anything about it or explained when he went back. Is this when Belinda was saved, or just a lie to get a partner to join him?

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We do not know.

Perhaps he went back before and accidentally killed Belinda.

Perhaps he saved her by running the drunk rocker off the road but then smashed into the house himself.

Maybe he went back for a short time and did nothing.

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In the ad, he said he had only done it once before, but never said anything about it or explained when he went back. Is this when Belinda was saved, or just a lie to get a partner to join him?

My take is that you are not supposed to consider that line quite so literally. We all travel through time once. The story is about living for the future, not living with regret.

Belinda was a self-perpetuating rationalization. It was a lie he told himself as much as Darius. He crashed through her window. His belief was that one mistake ruined his one chance. He's trying to correct that mistake.

Some people seem to believe he actually did travel through time.



I know something you don't know ... I am ambidextrous!

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My take is that you are not supposed to consider that line quite so literally.


Some people seem to believe he actually did travel through time.


Well... while it's mostly left as an unanswered question, it was mentioned he was previously arrested for breaking into a nuclear physics lab. While the agents that told them that didn't go into further details, it is possible it was to steal equipment needed for his first trip.

Someone ever tries to kill you... you try to kill em right back.

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Some people seem to believe he actually did travel through time.


The fact that he successfully builds the machine and they DO travel through time at the end of the movie suggests that he did.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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Some people seem to believe he actually did travel through time.

I believe he traveled through time. Maybe he was the one who killed her originally, and during time-travel, he didn't drink as much so the crash was not as serious.

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Everyone is speculating about what he did when he went back in time "once before".

But no-one seems to have thought of the obvious: The Test Run / Dummy Run, etc, to make sure the damn thing works!

( I sure as hell tested my machine out first before using it for more meaningful purposes )


It's simply irresponsible not to test your equipment.




"Look at it this way; in a hundred years who's gonna care?"

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But no-one seems to have thought of the obvious: The Test Run / Dummy Run, etc, to make sure the damn thing works!


Exactly. It's my belief that his first attempt at time travel was a test. Only a few minutes into the past. Just to make sure it worked. I mean, if the first device he made was capable of sending him back far enough, why would he be continuing to steal equipment?

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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No no no no. The first time he did save Belinda, and he ended up crashing into her house himself. The second time was for Darius, he said so himself.

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It would not have been when Belinda was saved as he did not know about that until Darius told him.

There is no reason not to take Kenneth at face value once we see him disappear with Darius.

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That doesn't make sense. If he time traveled and did in fact save her, how would he not remember doing it?

He was in denial about what happened with Belinda. She never died. He wanted to go into the past and prevent himself from crashing into her house, because he felt like that event is what caused her to not want to be with him.

When we meet Belinda she says she never had any romantic interest in him. Meaning that they NEVER dated, despite what Kennith says. He's brilliant(capable of making a real working time machine), but his mind is also a little broken.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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That doesn't make sense. If he time traveled and did in fact save her, how would he not remember doing it?


He had not done it, yet.

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Yes he did. He tested it, but he didn't change anything. The first time was a test run for proof of concept, the second time was "for real."

It's funny how you claim in your previous post we should take him at face value, now you're saying the complete opposite. That he straight up lied, and that we can't take anything he said at face value.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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What he was saying is that Kenneth changed the past on his second trip back with Darius, therefore saving Belinda was still in his future which is why he did not remember doing it, because it had not happened for him yet, but because it did happen in the past, Belinda was alive.

"Well how could Belinda be alive if he didn't already change the past?" Timey-wimey, my friend. The altered past was catching up to the unaltered present, and the closer they got to the successful launch of a fully functional time machine is when the bubble surrounding the present popped and let in all the changes.

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What he was saying is that Kenneth changed the past on his second trip back with Darius, therefore saving Belinda was still in his future which is why he did not remember doing it, because it had not happened for him yet, but because it did happen in the past, Belinda was alive.


I get what they were saying. I'm saying they're incorrect.

"Well how could Belinda be alive if he didn't already change the past?" Timey-wimey, my friend.


This isn't Doctor Who, and this isn't an answer even if it were.

The altered past was catching up to the unaltered present, and the closer they got to the successful launch of a fully functional time machine is when the bubble surrounding the present popped and let in all the changes.


It wouldn't work that way. There would be no "catching up." Any alterations one made to the past would appear to take effect instantaneously because history would be retroactively rewritten(as would be the memories of all involved). The "ripples" resulting from the change wouldn't have to "catch up" to a time travelers relative present. The idea doesn't even make any sense.

I am not aware of a single work of fiction that subscribes to the rules you suggest in this post. Not even Doctor Who plays by these rules.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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Any alterations one made to the past would appear to take effect instantaneously because history would be retroactively rewritten(as would be the memories of all involved). The "ripples" resulting from the change wouldn't have to "catch up" to a time travelers relative present. The idea doesn't even make any sense.


So what you are saying is the rules of a fictional construct are so locked down that you cannot possibly imagine it to be any other way? It's fiction. We don't know how it's supposed to work because as far as we know it doesn't. Just because it doesn't adhere to your ideas doesn't mean it's wrong.

EDIT: Old Biff. Old Biff gets into the Delorean and brings the almanac back to his younger self, which changes the future, a future in which he did not live to old age. This means, according to your ruleset, that he should have ceased to exist immediately upon handing over the almanac. Yet, we see Old Biff get back into the Delorean and travel back into the future where time had to catch up with him in order to erase his existence.

It's called the Delayed Ripple Effect and there is a whole bunch of other examples on the TV Tropes page. Sure, it may not make very much sense compared to what we think time travel should be, but that hasn't stopped people from writing it. If you can't think of a single example of this idea, then you're just not trying hard enough.

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So what you are saying is the rules of a fictional construct are so locked down that you cannot possibly imagine it to be any other way? It's fiction. We don't know how it's supposed to work because as far as we know it doesn't. Just because it doesn't adhere to your ideas doesn't mean it's wrong.


I'm saying that different works of time travel fiction operate on different rules. You're using the rules of one work of time travel fiction which is incompatible with the model of time travel this movie presents. This movie and Back to the Future use completely different models of time travel.

And you're the one trying to make it adhere to your rules. I'm explaining to you that your rules don't apply to this work of fiction. Hell, you're not even using any rules. You're just "sayin' stuff" whether it makes any sense or not.

EDIT: Old Biff. Old Biff gets into the Delorean and brings the almanac back to his younger self, which changes the future, a future in which he did not live to old age. This means, according to your ruleset, that he should have ceased to exist immediately upon handing over the almanac. Yet, we see Old Biff get back into the Delorean and travel back into the future where time had to catch up with him in order to erase his existence.


Actually if you watch the movie, that action in fact does not change the future. It creates a parallel timeline, but it doesn't alter Marty's home timeline which remains unaffected by time traveling Biff.

Which breaks the rules established by the first movie, but that's neither here nor there.

Again, these aren't "my rules." They're the rules established by the writers of their own works of fiction. But, in that case, Biff shouldn't cease to exist at all because he is technically from a different universe. Nothing future Biff did in the past will ever affect him, because the writers decided to change the rules in the second movie.

Time should never "catch up to him." From the moment he hands the book over to his younger self he then exists in a parallel timeline. He can't return to his "home" timeline unless he were to go back to a period before he gives himself the book and then prevents himself from getting his younger self from ever using it. Which is exactly what Marty does to get back to his home universe.


It's called the Delayed Ripple Effect and there is a whole bunch of other examples on the TV Tropes page. Sure, it may not make very much sense compared to what we think time travel should be, but that hasn't stopped people from writing it. If you can't think of a single example of this idea, then you're just not trying hard enough.


Except you're using it in completely insane ways that don't make any sense. I can't think of a single example of it being used the way you're using it to explain what happened in this movie. Especially when there's no reason to think your interpretation is correct.

Occam's razor. The position that makes the fewest assumptions is most likely the correct one. So the question is, which makes the fewest assumptions? The theory that he had traveled back in time but changed nothing? Or that time had already been altered by actions that had not yet been taken?

You're talking about a self consistent universe where a time travelers actions are historical fact before they ever time travel but at the same time you suggest the timeline is alterable. That Belinda being alive is an alteration to the timeline. The problem is, these two ideas are completely incompatible. Either a time traveler can alter the past or they can only play their predestined role. You cannot have it both ways, and that's exactly what your theory posits.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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It's a good thing the vast majority of us are going to die contributing very little to the world.

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Through most of the movie they're trying to lead you to believe he's just nuts. He's in denial about what actually happened with Belinda. But, the fact that he manages to make the machine suggests that he is much smarter than the movie leads you to believe.

I think he has done it before, but perhaps only made a short hop into the past. Maybe 10 minutes. Just to confirm his calculations were correct. I don't think he tried to change anything on his first attempt.

Prof. Farnsworth: Oh. A lesson in not changing history from Mr. I'm-My-Own-Grandpa!

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He could be smart and nuts. The more I think about this movie, I think there are two interpretations:

1. He's in denial about his supposed relationship with Belinda and crashing into the house, so he constructed a fantasy where she was killed. He blamed himself for pushing her away, so he came up with this idea to go back in time and "save" her.

2. He isn't delusional. He was successful in his last attempt to save her, but doesn't know it for whatever reason. Maybe he was zapped back to present time before he could confirm or maybe his brain is damaged by the time travel itself. We have no idea if/how memories "update."

Personally, I give more weight to Kenneth being delusional and brilliant. I think Belinda saying she had a boyfriend and liked Kenneth but not in the same way he liked her, tells us that Kenneth's version isn't accurate. UNLESS Kenneth's version is accurate in an alternate timeline, and Belinda's account is a result of something he did in his first trip back.

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Did he actually ever say that Belinda died? All he said was some idiot crashed into her living room. We all assumed she was dead from this. She might have been "dead" to him because she didn't come back to him like he hoped she would, but that's it.

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Yes, he explicitly says, "She died." Those are the two words he starts the whole background story with.

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