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) the "uncanny valley" effect. "The New York Times" noted that 20th Century Fox executives had decided to release "" alongside "Avatar", calling it a "secret weapon" to cover any unforeseeable losses at the box-office. Box office analysts, on the other hand, estimated that the film would be a box office success. "The holy grail of 3-D has finally arrived," said an analyst for Exhibitor Relations. "This is why all these 3-D venues were built: for "Avatar." This is the one. The behemoth." The "cautionary estimate" was that "Avatar" would bring in around $60 million in its opening weekend. Others guessed