I was having trouble with my computer so I called Harold the computer guy, to come over.
Harold clicked a couple of buttons and solved the problem. He gave me a bill for a minimum service call.
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?"
The computer guy grinned.... "Haven't you ever heard of an ID ten "T" error before?"

"No," I replied.
"Write it down," he said, "and you will never forget it."
So I wrote out ...



I D 1 0 T


I used to like Harold...

Chris.