 Koepp started afresh from Marmo's draft, and used Spielberg's idea of a cartoon shown to the visitors to remove much of the exposition that fills Crichton's novel.While Koepp tried to avoid excessive character detail "because whenever they started talking about their personal lives, you couldn't care less", he tried to flesh out the characters and make for a more colorful cast, with moments such as Malcolm flirting with Sattler leading to Grant's jealousy.Some characterizations were changed from the novel.