Nolan really said what if we put a dream inside a dream and then charged you fifteen quid to be confused.
Fun fact: "The rotating hallway fight used a real 100-foot corridor built on a giant motor, with no CGI."
Julie Andrews singing on a hill does a lot of heavy lifting before the whole escaping-Nazis subplot kicks in.
Fun fact: The real Maria von Trapp has a cameo, walking past Julie Andrews in the opening marketplace scene.