Few things everybody would agree.. sound mixing guy did it wrong. Writing this kind of movies are not possible without getting high. Nolan's mind was working at 10x speed when delivering but audience was at 3x average or max 5x. Slow down Mr. Nolan we are not you. Sometimes reversing video = going back in time but sometimes going back means redoing everything....what? For ease of understanding you could use color coding which u did in the end...red blue. I don't agree with people who say it was not entertaining. Audience submit brain to director for 140min and it his responsibility to convince and entertain them. If You succeed its win win no matter what logic he is applying.