I once was a communications contractor for the major NJ power utility. One of their long time field techs (let’s just refer to him as Mr. T) was giving a tour of a substation that was built from the looks of it in the 50s. I have, you see, this bad habit of leaning on things… well Mr. T, without missing a beat, slid his forearm between my hip and a faded green Bakelite knob, the kind that goes in and out rather than twisting. He informed me that if I had leaned any further I would have shut off half of Newark.