Avatar, iPad, and the future of the book

Amazing, but, in the future world of Avatar circa 2154 way out 4.4 light years from Earth, according to James Cameron, with all the high technology - when it comes to the important things and to knowledge transfer - it's not an iPad, it's still the printed (very thick) book - ink on paper - that is used as the key reference source as is shown in this very short scene from the movie:
Click play arrow (and maybe wiggle the play head), to view the short video clip from the movie.