 I'm not saying what I did was bad, but it wasn't so difficult. I guess it wasn't that much of a challenge to play Robbie. I made it as simple as it was required to be. Chris didn't want a complicated Robbie. He wanted something simple. A loving friend is basically the base mark for that character. The other day, I met F. Murray Abraham, who's 83. Wow. He said he'd seen Oppenheimer before.