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I'm trying to understand the ending of DoFP.

Wolverine wakes up in the future at the Xavier school, obviously not knowing anything that has transpired since he was flung into the Potomac river in the battle with Magento. He approaches the Professor and Xavier says something like "I've been waiting for you to return." How is it that this Wolverine remembers what happened?

marked as duplicate by phantom42, Shevliaskovic, Monty129, DVK-on-Ahch-To, Royal Canadian Bandit Oct 1 '14 at 13:25

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    It was established that the person who goes back in time remembers what happens... related: scifi.stackexchange.com/questions/68169/… – calccrypto Sep 30 '14 at 3:28
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    Technically, this version of the question was posted first, but the other one is better fleshed out. – phantom42 Oct 1 '14 at 11:11
  • Sorry, this is not a dupe. Check the timeline (no pun intended). – Mike Oct 1 '14 at 17:30
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This is a common trope in the speculative fiction genre. Time travel that alters the past allows the person or persons at the center of a shifting time stream to remember that the past has been altered.

Since Logan was the time traveler and the initiator of the events, only he will remember the previous timeline. For everyone else, they never happened. Is this a different universe? Did the other universe cease to exist? Did Logan's mind move to a different continuity? These questions are not clearly able to be answered without more information.

What we do know is:

  • In the case of Wolverine in Days of Future Past, he remembers what happens in the past that he went to but would have no recollection of what has transpired in his new timeline.

  • In his head, he would hold the memories of his old timeline and all the events that lead up to him traveling in time, his adventures in the past and his return to the present/future and his meeting with the Professor.

  • With Xavier's powers, he would be able to learn of the previous alternate past and update Logan with the new, altered history since Logan changed it.

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