As I'm writing this I'm working on my 2nd thumbnail pass for Rad's 4th and 5th homework assignment, which is thumbnailing and beating out your story.
I also happen to be reading this book at the moment:
On Filmmaking: An Introduction to the Craft of the Director by Alexander Mackendrick.
While working on my thumbnails pass this evening, I just recalled reading this in the chapter titled: Slogan's for the Screenwriter's Wall,
"If it can be cut out, then CUT IT OUT. Everything non-essential that you can eliminate strengthens what's left."
Makes a whole lotta sense right now. I'm going to continue working on my thumbnails now...