@FishNamedDog @th we eventually fixed knocking engines with less toxic additives and better engineering and the "highly durable" aspect of lead paint might have led to overuse in cases where water resistance and bright colours were not really needed. If you paint your classroom in lead, maybe repaint it before the kids learn how sweet paint flakes can taste...
Like I said - lead has its uses, but within reason and maybe only if it's the best alternative.
But I feel we are having an argument about nothing here.