He's a very very smart man, and knew what he was doing, he just didn't know how to teach it. He retired after my freshman year, and I loved his "7 Story"
He clearly has a "calculos" mind: random and makes no sense
He is intelligent, but he is a horrible teacher. I had him for AP stats and I had no idea what was going on. I still got a 4 on the AP test, no thanks to him.