You don't need more than high school science just to build a bridge. Yet we keep educating engineers. Completely unnecessary, as long as nothing breaks. You do

You don't need more than high school science just to build a bridge. Yet we keep educating engineers. Completely unnecessary, as long as nothing breaks. You don't really need to understand the citric acid cycle just to operate on someone. Yet we keep educating surgeons. Is that a bad thing?