School grades are testing something very different from data entry. We know as a species that our learning process is slow and error prone, so doing decently at

School grades are testing something very different from data entry. We know as a species that our learning process is slow and error prone, so doing decently at that is good, and we don’t need to have 100% knowledge in a school subject. Meanwhile, yes, if my bank is copying account values, or even just account ledgers with history, I want them to have 100% accuracy. Not 99.99999% or 99.9% or 99%, let alone 90%.