Apparently, Albert Einstein is credited with this idea about messy desks: "If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?'"
I tend to agree somewhat - a working person's desk is bound to get cluttered and chaotic. Many persons thrive on chaos and need the disarray to convince them they are busy and productive. But these same persons also need to routinely tidy up the chaos, especially if they can't find important documents, keys and pens.
See my desk from today.