I always had a feeling that Rupert just knew - I always had the feeling, I may be wrong, if you interview Rupert, he might say different, but my strong feeling is that he got Ron inside and out, and I don’t know that he needed anyone to tell him. Dan is one of the most inquiring minds I have ever met. Dan wants to know, he wants to understand, and he does, and he makes sure he masters it, and he does it. And Emma, she just - there’s sufficient overlap between Emma and Hermione that she’s just the poster girl for clever girls, isn’t she? She was wonderful, but she could do so much more than just be the nerd, and particularly in the last film she showed that, when she and Dan are playing these two characters are alone. The depth of emotion Emma came up with there was extraordinary. - J.K. Rowling.