You know, there are a lot of directors, like Clint Eastwood (on Changeling) is one where he casts you and you know in many ways that's enough for him and so, you go, ok, well, he saw something. Ok, what is it that he saw? What is it that I brought to this and why am I right for this and not trying to double-guess it and get in your own way and get psyched out, 'cause he trusts so much.
