Avengers: Endgame goes out of its way to say its time travel does not operate the way movies like Back to the Future do.
The video above contains SPOILERS for Avengers: Endgame.
The video above by ScreenCrush’s Ryan Arey breaks down exactly what’s happening in Endgame, and what it means for the past, present, future, and alternate dimensions of Marvel movies.
He even has some props to help visualize how the time travel works.