I need to read this before I see it. Good science fiction must be read book-before-movie.

I need to read this before I see it. Good science fiction must be read book-before-movie.

I strongly agree with the statement, but for a different reason. As you read the book, you'll no doubt be aware the movie will be different. Treat the movie as a Cloud Atlas 2.0. It isn't the book, but it accomplishes much the book can't do. I wouldn't say one is better than the other; rather, they complement one another. However, a lot of background info from the book will help to explain parts of the movie.