A young executive was leaving the office late one evening when he found the Managing Director standing in front of a shredder, desperately pressing button after button with a piece of paper in his hand.
"Listen," said the Managing Director, "this is a very sensitive and important document, and my secretary has gone for the night. Can you make this thing work?"
"Certainly," said the young executive. He turned the machine on, inserted the paper, and pressed the start button.
"Excellent, excellent!" said the Managing Director as his paper disappeared inside the machine. "I just need one copy."