This is a difference between problems on tests and problems in the real world. It's unfair for a teacher to give you a problem too hard to solve, so if a proble... (opens in new tab)

This is a difference between problems on tests and problems in the real world. It's unfair for a teacher to give you a problem too hard to solve, so if a problem on a test seems too hard, there has to be a way to make it easy. Whereas real world problems may actually be too hard.