In the early 1980s I was doing an electronic engineering apprenticeship and was tasked with wirewrapping a backplane for part of a flight simulator. It was a bi

In the early 1980s I was doing an electronic engineering apprenticeship and was tasked with wirewrapping a backplane for part of a flight simulator. It was a big panel - a stand-up job to do the work - and it took me the best part of a week to lay out and wrap all the wires and it was with great joy that I passed the panel to the electrical inspector for examination and testing. A day or so later, back came the inspector with a grin on his face and he said "I have some good news and some bad news..." "The good news is that your panel has passed acceptance testing" - Yay! "The bad news is - they come in pairs..." :-(