Samantha Morton did not mean to start humming during that scene in The Odyssey, the scene everyone is talking about, when, as the sorceress Circe, she turns Odysseus’ men into pigs, literally moulding them into their true savage selves. It was not in the script. It just happened. And when Morton was done, she looked over to director Christopher Nolan, waiting for him to say something like, “Maybe try it without the humming, Samantha.” But Nolan did not say anything, so Morton did it again and...