A consultant showed a new user how to copy a disk to do backups and told her to buy a box of disks. She did, and when she got the new box, she unwrapped the disks and did the backup. The consultant returned a week later, and the client proudly showed him her backup disks. To his amazement, she had 'peeled' off the wrapping on all ten disks, including the metal shutter! Her explanation: I thought you had to expose the disk!
