Problems in textbooks that are open-ended by accident or broken in one way or the other are surely a great example for real world problems but usually get the p

Problems in textbooks that are open-ended by accident or broken in one way or the other are surely a great example for real world problems but usually get the pupil that is spotting the problem into trouble. A lot of teachers face high pressure and often just graduate by comparing the student's results to the supplementary material's results. A cynical person might say that the student now has learned another lesson: That actual thinking isn't necessarily rewarded in the real world.