Between the Roman Empire and the Renaissance, hardly anything of lasting importance occurred during the Dark Ages. Besides Canterbury Tales and Beowulf, there's not much literature and virtually no works of art or music of note. Science remained stuck in the Aristotelian dogma, and there were no real advances in inventions. The Dark Ages blew.

STEM majors get the best jobs. Better to be unsure of medieval literature and have a well paying career than the other way around… But seriously - People have different talents and aptitudes. It’s pointless to expect everyone to know exactly the same set of information.

to be fair, if this isn't an important part of their job they have no reason to know such specific things. I don't, I'm do high end carpentry finish and none of this applies to my job. do you know the proper ratios for dozens of chemical products required for solvent and water based finishing? I hope not, it is pretty much useless outside my industry except when I want to sound smart. one of our chemicals is even used in mass produced frozen food...