Input (grade 13): The most important thing for Paterson was to keep the spirit of the book alive while finding a way to transform it from "a novel that takes place mostly in the characters' heads to a dynamic visual medium".
Output (grade 8): Paterson said it was very important for him to keep the spirit of the book alive. At the same time, he had to change it from "a novel that takes place mostly in the characters' heads to a dynamic visual medium".