My point is not only about teaching and having the ability...

My point is not only about teaching and having the ability to learn but also the ability to retain so you don't have to tell them the same thing over and over again, ... It's like a teacher. When you give them a test, you don't know what that student knows. How do you give a test here except on the field? Roger Craig told me, 'Never assume that they know. You can assume they should know, but there's no guarantee.'