One of the things he’s gleaned from his empathetic studies is that, contrary to thespian myth, human beings transform themselves very little. “I think there’s an obsession with arc,” he says, “the arc of a character, the character’s journey - but I don’t think people change all that much in the end. I think people have a very primal, immediate nature, and they spend most of their time struggling against it or trying to reconnect with it.