"I worked out what all teachers do. If you are a chapter ahead of the class you are okay - until you have a really bright kid, and then you have got a problem." So, when he's 18, he did a bit of voluntary teaching abroad and 50 odd years later, he thinks he knows the job. I'd say that you should be really afraid if he ever gets into power, but since there is more chance of aliens being found on the moon, I wouldn't worry too much. It is sad though, to see what little he thinks teachers do.