Everyone is mentioning branching timeline of back to the future but the movie never follows that. Marty’s parents are not getting together he ceases to exist. Biff brings book back and Marty goes right to that timeline. The movie is just cause and effect.
Everyone is mentioning branching timeline of back to the future but the movie never follows that. Marty’s parents are not getting together he ceases to exist. Biff brings book back and Marty goes right to that timeline. The movie is just cause and effect.
People bring it up because there is a scene in one of them where Doc Brown explains the branching timeline theory.