Damn, give the guy a rest. My IQ was tested well above normal, but I sure am no menza. I do know one or 2 and he doesn't know squat till we tell him. But understand, he'll remember it all.
I had a good friend in college; we both took serious science classes. One day we were playing tennis and I asked him how he kept getting the top grades, and he just gave that Michael Jordan look when he was making all those 3s for Chicago.
He ended up doing what he loved most. Contracting to take rich peoples yagts from NY to wherever for the season, and back.
Don't ask me; it's what he loved to do.
If he listened to a lecture and/or read the text one time, it was in there, and remember, this isn't some philosophy course.
I'm just saying, give the guy a break. Most are pretty shy.
JMHO