I leave the vagaries of eltrickery to you David, like the old riddle "what's black and charred and hangs from the deckhead?"......... an injuneer changing a bulb
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Oul scabby knuckles
If at first you don't succeed, destroy all evidence that you tried
Anything God didn't create was made by engineers.
I try so hard to make things idiot proof but they keep making better idiots