As the stories get longer and more detailed, there will be a lot of things left out of the movies. I was surprised how closely the movies followed Books 1 & 2. That almost never happens in the film industry. The last time I saw a book/movie combo like that was The Perfect Storm. But of course, they left out the part I really wanted to see which was all the meteorology graphics.

In Movie 3, that turning back time sequence ate up a large part of the movie.