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?'

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...