Incomprehensible - don't waste your time!
Even after being prepared by reading a couple of critics' reviews beforehand, we found this movie impossible to understand - and that was after activating the subtitles to be able to see what the actors were saying. Anyone who actually saw this film in a theatre would have no chance of figuring out what the heck was going on.
I'm a fan of science fiction but this movie was just a garbled mess. How director Christopher Nolan was able to get this project greenlit by the Hollywood money men is more of a mystery than the movie itself.
Save yourself two plus hours of viewing time and find something else to watch - you've been warned!