Any work of the scale of Peter Jackson's The Lord of the Rings movie screenplay was going to exhibit differences from the source material. While the three movies had a large number of minor and trivial differences from the book, there were quite a few substantial differences as well. These major differences take two forms—1. differences in form; this includes changes made to the story by deleting or adding parts or spreading ideas over a long period of time, and 2. differences in substance, which included changing actual ideas and people in the story to suit the film. Some such changes include the changing of almost all the characters and changing events to reach the same outcome as the book.