re: #19 Higgs Boson’s Mate
Have a WWII documentary running in the background. The narrator mentioned that during that during that conflict, America produced 41 billion rounds of ammunition. That was enough to kill the entire population of the world back then 17 times.
That’s a hell of a lot of brass. Think of all the copper wasted, or tied up in stockpiled ammunition, while builders spent the 50s and 60s trying to use aluminum for house wiring.