J.K. Rowling says:
Dan has the hardest job because Harry on the page is the most difficult, the most nebulous. He’s just perfect, I think. Rupert is just a just a genius. I don’t think anyone ever needed to tell him how to play Ron. He’s just known. Comedically he’s just spot on. You couldn’t teach that.
Emma is stunningly beautiful. She’s genuinely very bright, she’s very articulate. She’s everything you’d need to be to play Hermione.
