eh but I dont think that was ever implied...the parallel universe in the future, yes. but I dont think it was implied for him to go into the past, alternate universe.
the premise is hes somehow able to gather information from the dudes memory...and after that basic premise the logic goes all over the place
I mean, I could live with the fact he could interact with the world but once he got off the train and shyt I was like
I actually kept waiting for writers to show that hes imagining shyt/made it up like in brazil's ending...but that never came.
at the end of the movie, he sent the bish an email telling her they created a whole nother world and shyt