I know both of those, I was making a point that its annoying!

Umm....bbomber the only reason you're suppose 2 be doing that is because u open new passages throughout the library.....Oh also don't miss the columns because u have 2 keep spinning them until the tresure chest is right in front of u. ok?
Actually the majority of the bookshelves are optional and I know about the pillars, this is like my 5th playthrough!