Avatar (2009 film) themselves to change into a Na'vi. "Avatar: A Confidential Report on the Biological and Social History of Pandora", a 224-page book in the form of a field guide to the film's fictional setting of the planet of Pandora, was released by Harper Entertainment on , 2009. It is presented as a compilation of data collected by the humans about Pandora and the life on it, written by Maria Wilhelm and Dirk Mathison. HarperFestival also released Wilhelm's 48-page "James Cameron's Avatar: The Reusable Scrapbook" for children. "The Art of Avatar" was released on , 2009, by Abrams Books. The book features
Avatar (2009 film) higher. There were also analysts who believed that the film's three-dimensionality would help its box office performance, given that recent 3D films had been successful. Cameron said he felt the pressure of the predictions, but that pressure is good for film-makers. "It makes us think about our audiences and what the audience wants," he stated. "We owe them a good time. We owe them a piece of good entertainment." Although he felt "Avatar" would appeal to everyone and that the film could not afford to have a target demographic, he especially wanted hard-core science-fiction fans to see it: "If I