Why the Cast Considers 'Oppenheimer' Christopher Nolan's Magnum Opus
Cillian Murphy, Matt Damon, Emily Blunt, and Robert Downey Jr. discuss why they didn't need to learn the quantum physics to play their roles in 'Oppenheimer.' And writer/director Christopher Nolan reveals when he knew Murphy was the right actor to play the father of the atomic bomb. This interview was recorded before the SAG-AFTRA strike.