52

Biff didn't actually have to use the same plutonium-driven Delorean that Marty had to use in the 1st part. He used the Delorean that Doc had modified based on 2015 technology, which didn't need the high energy of plutonium to operate anymore rather than just garbage (nor did it need any roads either). We see this in the beginning of the film, where Doc just ...


49

Predestination For his final assignment, a top temporal agent must pursue the one criminal that has eluded him throughout time. The chase turns into a unique, surprising and mind-bending exploration of love, fate, identity and time travel taboos. Near the end of the movie : After returning to that day, John encounters Jane, and when they begin ...


39

The Doc Brown in 1955 is younger than the Doc Brown in 1885, by 30 years. The Doc Brown in 1955 will still live for another 30 years before traveling back to 1885 and being shot by Buford.


24

This is The Fantastic Journey. It's actually from the late 70s rather than the 80s. The show revolves round a group of people shipwrecked or lost on an island in the Bermuda Triangle where different timezones are intermingled and interact. The main cast travel from place to place, trying to get home. It was cancelled after a single series of 10 episodes. ...


19

Caveat: Looking for logic in time-travel movies is an exercise in recursive futility. The idea in 12 Monkeys is that the past is, in many ways, read only. You can go back and "read" all you want, but you won't be able to "write" anything that will (meaningfully) change the timeline. Alternatively, you can attempt to change an event, but ...


18

First of all, you have some parts wrong in your timeline and are missing others. So lets go through it again step by step: The time taken to travel from Earth to the wormhole is 2yrs. Check, aggregate = 2. After that we don't know how much time passed on Earth while they were travelling the wormhole. Could be 10yrs judging from the ...


18

Here's a neat diagram that will help you see the events happening in a chronology. (Source : Predestination Timeline Explained) The link has a lot more detailed explanation. Follow it from the Pink, to the Blue to the Green for chronology. It would be: 1) Jane left at orphanage 2) Jane meets and falls in love with an unknown man (John) 3) Unknown man (...


14

TL;DR: Terminator 1 appeared to follow the predestination ideology, where going back in time meant that John Connor and Kyle Reese fulfilled their roles, rather than changing anything. Terminator 2 played much more with the idea of both fate and free will. By exercising free will, the future was changed. Of course it can be argued that intent is ...


13

There are two logical ways of dealing with time travel paradoxes: Stable time loop. When you travel to the past, whatever you do, you won't actually change anything (which pretty much implies there is no free will). In fiction, the way this is often done is that the time traveller attempts to change the past, but doesn't succeed, because it was him who ...


12

Marty was in the time machine when he came back. The definition of the time machine is that the machine (and what it contains) travel through time unaltered. (My real question would be, why is there just ONE Marty when he comes back to 1985 after fixing his family. There should be one Marty that was born from his parents on his normal birthdate, and one ...


11

It would seem logical to me that any form of time travel would imply spacial travel as well. The earth is constantly rotating on its axis and orbiting the sun. If you traveled through time but not space (i.e. ended up in the same exact point in space) then you might end up in the vacuum of space, or even the interior of the earth. That being said, if the ...


11

This sounds very much like a description of H.G. Wells' The Time Machine. It has been adapted to film more than once, but the two most famous ones are from 1960 (which I haven't seen yet though) and from 2002, which I have seen and know that it invloves a partially destroyed moon at some point in the future. And given that you didn't say the movie itself ...


10

The time travel logic of Interstellar follows the Novikov self-consistency principle (which physicist Kip Thorne, associated with the movie, did work on). Different time travel stories handle the logic of time travel in different ways. Consider the grandfather paradox, where you go back in time and kill your grandfather. In some stories, it's possible for ...


9

In the original timeline, Rachel is injured or killed at the party. The first Aaron to emerge from the original failsafe box (hooded Aaron who drugs his "innocent" pre-time-travel self) knows this. When he is challenged by the later version of himself, he agrees to leave because the newer copy of himself has already done what he intended (record the ...


9

If Marty & Doc would have dug up the 1885 Delorean, then it wouldn't have been in the cave in 1955. Therefore the Marty in 1885 would possibly cease to exist.


9

I think many are missing this crucial dialogue in the movie: Rita: I don't know what to say. Phil: I do. No matter what happens tomorrow, or for the rest of my life, I'm happy now. The loop broke when it was pointless to continue further: I think this is crucial. Each day before that one had the potential to be different, to be better; but not the one when ...


9

The first lines of the movie: "Somebody asked me today... "Phil, if you could be anywhere, where would you like to be?" I said to him, "Probably right here." Elko, Nevada." In screenwriting, many devices are used to give us a clue of what the movie is about. Not what happens, but what it is about. For example, it could be said that many ...


9

The purpose of the experiment was to prove or disprove the grandfather paradox theory of time travel. In this case, the result was inconclusive, because it's never stated for certain that she was the right person and not just an innocent victim who shared the name. Remember they were going after multiple people with the same name in the hopes of finding the ...


9

So travelling forward at the normal rate could only be a good thing No, it would be the opposite. Sarah and Pops only waited because they needed a Future Tech cpu to power their homemade Time Displacement Engine. Waiting longer could risk being injured, or loosing strength, being caught stockpiling weapons, having the TDE being discovered (it's tapping ...


9

Zítra vstanu a oparím se cajem (1977) English title: Tomorrow I'll Wake Up and Scald Myself with Tea Former Nazi Klaus Abard survives to the 1990s by taking anti-aging pills. He plans to use a time travel trip to return to Germany in 1944 and present Hitler with a hydrogen bomb, so that he can win the war. Unfortunately the pilot, woman-chasing Karel ...


9

The GPS's connect them to the Quantum Bridge. They allowed them to travel through it remotely and safely. Stark solves this with a "time-space GPS," a way for the team to travel through the quantum bridge without getting lost in it. None of any current science suggests that this is possible, writes Shankland. But then he leaves the door open a ...


8

As noted by Doc's letter to Marty, Doc has been in 1885 for 8 months. This is crucial to figure out why the gas, how ever much is left, would not be useful. Gas tends to have a shelf life of 3 months. 8 months is more than twice that. And that's only in ideal conditions. Since Doc likely knew enough to prep the damaged DeLorean for long term storage, which ...


8

Here's my thoughts: Granger goes into a coma because he has become an unresolved paradox. It's unclear when he arrived - we can guess 5pm, after Abe turned on the machine - or what, exactly, went wrong. We'll never know. "The permutations are endless." What we do know is this: when Thomas Granger interacted with Abe and Aaron, he prevented himself from ever ...


8

The movie is "Midnight in Paris (2011)", American-French romantic comedy film written and directed by Woody Allen. Set in Paris, the film follows Gil Pender, a screenwriter, who is forced to confront the shortcomings of his relationship with his materialistic fiancée and their divergent goals, which become increasingly exaggerated as he travels back in ...


7

The idea of going 33 years into the future and 33 years in the past had to do with the methods of time travel, and there are several shown in the show. "Season 1" Time Travel The 33 years into the future and 33 years into the past rule seemed to mostly apply for H.G. Tannhaus' time machine, and in a similar way for the Sic Mundus Creatus Est. ...


7

[Currently there is another answer that has been accepted, but I don't think it clearly answers the question, so I provide this answer as an alternative.] The cave's tunnels serve as a junction of three separate times: Time A which is 33 years before Time B which is 33 years before Time C Whichever time you enter from, you can exit at one of the other two ...


6

I thought it might help to explain just the mechanics of the events on board the Aeolus a bit to clear up what's happening. I am loosely following this video analysis by Peng Yang, though I think I simplified the explanation a bit. The two key aspects of the main plot are these: First off, there are two separate groups of people arriving on the ship. I call ...


6

This is not a true answer so much as it is a guideline for what an answer should be. It's my best attempt at an answer, but there's a gaping hole in the Salvation change. I'm also not sure if the list of discrepancies I address is complete or not. I've relisted it as an answer instead of being part of the question at the community's request. The Terminator ...


6

Unfortunately, how Gil time travels in the movie is not disclosed and Woody Allen never explains the mechanics of his time travel as any explanations in the script would take away from the plot of the movie. We are to just believe that something magical happens around midnight. I have seen this movie several times and the following is how I interpreted the ...


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