Image Source: http://www.flickr.com/photos/clonedmilkmen/3604999084/
Of the above tangle, the photographically inclined sys admin explains, "This is a giant mess that evolved over a series of years. It is nearly impossible to trace the cables in the rack, hard to add new connections, difficult to audit the wiring. What would happen if one of the switches failed and had to be replaced? We'd have to take down the entire system!"