Unfortunately the movie oversimplified the characters. Jack in the books is a complex guy, who has besides his good traits some unpleasant parts (his obsession

Unfortunately the movie oversimplified the characters. Jack in the books is a complex guy, who has besides his good traits some unpleasant parts (his obsession with making money with get rich quick schemes on land which often land him in debt, and his obsession with taking "prizes" at sea for personal gain more than duty). Crowe's Jack is just a generic hero. And Stephen is a complex guy too, who is an intelligence agent in addition to being a doctor and naturalist. Bettany's Stephen ignores this whole part of his character.