"Ooh, good trick question!" Peter said. "It’s like I told you. There is only one copy. It’s on the DVD. I am not about ripping you off." The DVD appeared as an icon on his desktop. He opened it up, and it showed but a single file. He dragged that over to the thumb drive’s icon and waited for a few seconds as the files were transferred. "Now, two copies," he said. He dismounted the thumb drive and removed it. "Voilà," he said, holding it up. "The goods. As promised."