OK Curtis, I'll bite

UML is merely a notation, using which a design may be formulated, recorded, amended and communicated. It's just as possible to produce a rambling incoherent mess using UML as it is when posting comments on here.

I agree with Evil Graham, this series of articles is thought provoking and seems to make a lot of sense - well, enough to have convinced me to buy the book anyway. ;¬)