Young Judy, the editor of a trivia publication, was having trouble with her computer. So she called Prem, the computer guy, over to her desk. Prem 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."
I D 1 0 T