Maker of the movie has taken a familiar concept, given it a few innovative twists and turns and the result is a fast paced, thoroughly enjoyable flight of fantasy with an earthly soul. The movie, let alone try to come up with any elaborate or grandiose explanation of how this travel between "parallel universes" is possible or works, does not even attempt to make sense of it. But it beautifully gets across the message of "what if" questions and their implications.
How another film maker would have handled the concept, paradoxically is the very subject of the movie. I found it a fun and thoroughly enjoyable and satisfying experience which despite apparent flight of fantasy, used as a medium, remains thoroughly tied to our earthly and normal existence and addresses the choices and dilemmas of life and how we choose to face and resolve these.
How another film maker would have handled the concept, paradoxically is the very subject of the movie. I found it a fun and thoroughly enjoyable and satisfying experience which despite apparent flight of fantasy, used as a medium, remains thoroughly tied to our earthly and normal existence and addresses the choices and dilemmas of life and how we choose to face and resolve these.