> Isn't it better to have an expert who is a mediocre teacher than an excellent teacher with only a mediocre command of the subject matter? Suppose we suppose

> Isn't it better to have an expert who is a mediocre teacher than an excellent teacher with only a mediocre command of the subject matter? Suppose we suppose to suppose. An expert visiting a classroom with a competent teacher would be the best thing -- the teacher can provide direction and control over the class as well as assist with prep. A Boeing machinist specializing in door plugs might make for a dry presentation. But a Boeing machinist specializing in door plugs who has the help of a good physics/engineering class teacher to lay out a lesson plan would probably be pretty fun.