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?”

Harold 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 Harold………….