In an era of digital effects, Nolan insists on practical filmmaking wherever possible. For Inception, his team built a rotating hallway set that actors actually fought in. For Interstellar, they projected alien landscapes on screens around the actors instead of adding them digitally.

This serves a purpose beyond spectacle: audiences can subconsciously detect the difference between real and simulated physics. When an actor fights in a genuinely rotating hallway, the body moves in ways CGI cannot perfectly copy. The small imperfections of reality make the impossible feel convincingly real.