Great picture, and what a genius to think of that! Thanks for sharing it!
As evidenced by the recent data theft here on the east coast of the US, where two guys drove through TJX's corporate parking lot and wirelessly stole over 300,000 credit card numbers, I think the greatest danger to any kind of security is our own shortsightedness, ego, and more often than not too much 'intelligence' completely shadowing simple common sense.
Let's face it, throughout history, security is often broken by man's own shortsighted presumptions.
At Troy, a great battle was fought with great heroics and yet not one single person bothered to ask, "Why are they giving us this giant horse?" as they opened the gates to the 'impenetrable' city, and rolled their enemies in, to their own doom.
Those who forget or ignore history are doomed to repeat it - and computer security is well laden with pristine examples of overly-intelligent people failing to use common sense.
There's no such thing as dumb questions, only poorly thought-out answers...