According to
James Cameron, the Avatar sequels were such a massive undertaking that he divided the three scripts between the writing team of Rick Jaffa, Amanda Silver, Josh Friedman and Shane Salerno. Cameron delves further explaining the story process: "I think we met for seven months and we white boarded out every scene in every film together, and I didn't assign each writer which film they were going to work on until the last day. I knew if I assigned them their scripts ahead of time, they'd tune out every time we were talking about the other movie."
