The Dark Knight Trilogy: 18 Cool Behind-The-Scenes Details You Didn't Know
16. Batman Begins And Raiders Of The Lost Ark Use Humour In A Similar Way
Nolan is often criticized for his movies being too cold and emotionless, lacking that extra bit of heart or vital touch of humour.
Some people struggle to connect with his characters because of this, but when it comes to humour in particular, it's not that Nolan is a detached robot who never smiles or laughs - it's just that he's very careful with how he utilises comedy in his movies.
During the documentary, the director likens his use of humour in Batman Begins to the way it was implemented in Raiders of the Lost Ark, saying "there's a couple of great gags in there [Raiders], but it's not a comedic film".
Basically, he wants his humour to feel as natural and effortless as possible, allowing his characters to act like real people, how they would act in our own reality. Real life isn't consistently funny, after all... as 2020 has finely demonstrated.