That's a little unfair. Flight instructing does not prepare you for having a limited amount of time to remember and accomplish the formula for the speed at which an aircraft will hydroplane, or all the different kinds of firefighting trucks and which airports are required to have which. Someone has to tell you what to expect.

A lot of very good pilots find out the hard way what's on some 121 interviews, with no way of knowing what's on them beforehand. The gouges aren't always accurate. They are harder now than they've ever been, and they can be rude and unprofessional.