The Requirement's Game

I wonder what the rules of this game are. It seems more and more obvious to me, that the requirement ‘phase’ of a project is way underestimated. Recently in James Bach’s blog (Quality is Dead) I saw something that explained a part of it: we don’t really know what the requirements of most (if not all) the systems and gadgets we’re using were. But once upon a time, there was a project around,