I was having trouble with my computer. So I called David, the 11 year old next door whose bedroom looks like Mission Control, and asked him to come over.
David clicked a couple of buttons and solved the problem.
As he was walking away, I called after him, "So, what was wrong?"
He replied, "It was an ID ten T error."
I didn't want to appear stupid, but nonetheless inquired, "An ID Ten T error?
What's that? In case I need to fix it again."
David grinned, "Haven't you ever heard of an ID ten T error before?"
"No", I replied.
"Write it down," he said, "and I think you'll figure it out."
So I wrote down: I D 1 0 T
I used to like that little boy.