Shredder as a copying machine

A young executive was leaving the office at 6 p.m. when he found the CEO standing in front of a shredder with a piece of paper in his hand.

"Listen," said the CEO, "this is a very sensitive and important document, and my secretary has left. 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 CEO, as his paper disappeared inside the machine. "I just need one copy."