Judy was having trouble with her computer. So she called Tony, the computer guy, over to her desk. Tony clicked a couple buttons and solved the problem. As he was walking away, Judy called after him, “So, what was wrong?”

And he replied, “It was an ID Ten T Error.”

A puzzled expression ran riot over Judy’s face. “An ID Ten T Error? What’s that … in case I need to fix it again?”

He gave her a grin… “Haven’t you ever heard of an ID Ten T Error before?”

“No,” replied Judy.

“Write it down,” he said, “and I think you’ll figure it out.”

(She wrote…) I D 1 0 T