How did Marty meet Doc in 1955 after Doc has travelled to 1885?
In Back to the future II, Marty burns the almanac in the bucket and Doc's DeLorean was struck by lightning, causing doc to travel to 1885 accidentally. Then Marty receives a letter from Doc which was written in 1885, saying that the time machine is at so and so place and do not come to 1885. Then Marty runs to Doc present in 1955, who has just sent 'other' Marty to 1985. The Marty says that, he's back from the future.
My question here is that, Doc goes to 1885 and he dies at the hands of Biff's Great grandfather. Then according to the timeline ripples, Doc will never be present in 1955. Thus all the events involving Doc after his death should have been altered. Just the time machine would be there at that place.
How did Marty meet Doc then (in 1955 for the second time)? It would be like a time loop that time machine was not created later (1985), it has been present before (1885) only and it makes the plot wrong.
Am I missing something here?
Best Answer
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.
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How did Doc and Marty meet?
Marty snuck into Doc's lab, and was fascinated by all the cool stuff that was there. when Doc found him there, he was delighted to find that Marty thought he was cool and accepted him for what he was. Both of them were the black sheep in their respective environments.How does Marty McFly get back to 1955 in back to the future 3?
In 1955, moments after witnessing Emmett "Doc" Brown disappear in his DeLorean, Marty McFly learns that Doc was sent to 1885. Using information from Doc's 1885 letter, Marty and the 1955 Doc find and repair the DeLorean so Marty can return to 1985.How did Doc Brown get back from 1885?
Doc only insisted Marty not to come back because he was happy. This was not a warning about any specific year... it was just a warning to not go rescue him from the past where he was. There was nothing special or bad about 1885; that just happens to be the year where Doc was.Back to the Future (5/10) Movie CLIP - I'm From the Future (1985) HD
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Answer 2
If someone went and killed an incarnation of Doc, present at that point in the timestream, it would have a ripple effect on the future.
Killing a fully grown adult Doc, not at his fully-grown point in time, but rather killing a Doc who was never in a time period, who is only visiting that time, would not have implications on any Doc, because the death of someone who traveled back to another time period as an outsider would not be altering events that happened before in the original Doc's life.
There was nothing in Doc's life, prior to 1955 that is effected by a post-1955 version of him getting killed in 1885. That 1885 event happens before 1955, technically, but it's not a pre-1955 Doc who is getting killed.
Answer 3
Then according to the timeline ripples, Doc will never be present in 1955.
By that logic, no one would ever be able to travel into the past unless they would be able to naturally live out their life to come back to the point in time they travelled from. If you had 50 years of natural life left, you then wouldn't be able to travel 51 years into the past.
You're misunderstanding how time travel in BTTF works. Doc can invent the time machine, travel to the past, and die, without destroying the causal link.
You seem to think that when you travel to the past, you become "younger", but that is not the case. This is easily shown when future Biff (the old guy) travels back to 1985. After traveling, he is still an old man (compare him to 1985 Biff, who he has a conversation with).
The only paradox would be if Doc Brown travels into the past, e.g. to 1954, and burns down his laboratory (or kills the 1954 version of himself) so that it's impossible for Doc (in 1955) to invent the time machine. These are all variations on the grandfather paradox, which specifically revolves around changing the past in a way that the time travel event (in the relative future) becomes impossible (either by prematurely killing the time traveler or making his time travel impossible to have happened).
Similarly, if Doc had decided to invent and publicize the time machine in 1885, it would have become commonplace well before 1955 and the "original" Doc Brown in 1955 would not have needed to invent a time machine, thus creating a potential (though resolvable) paradox.
Answer 4
You most definitely missed something.
The trilogy goes in this order, and they all have scenes in the year 1985:
Back to the Future (1985)
Back to the Future Part II (1989)
Back to the Future Part III (1990)
It is the older 65-year-old doctor who dies in 1885; not the younger 35-year-old man. An old man dying in the past has no effect on himself being born later.
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