I've been meaning to mention this SR sighting made by my brother in
California earlier this month. He and his grandson (12) were tuned
into a cartoon channel featuring an old Tom & Jerry flick. Tom was
trying to invent a better mousetrap and was busy making some
calculations on a slide rule. My brother said that his grandson had
no idea what Tom was doing. Worst luck; we don't get Tom & Jerry down
here in Australia, so I've no idea what type of rule the little
fellow was using. :>) - Dan Wills

P.S. Been enjoying your problems, Gary.