He talked down to the students. He was petty and condescending. He lacked basic computer literacy and would spend the first 5-10 minutes of class setting up his laptop. He required the textbook be brought to every class but only used it 1/3 of the time. He constantly gave handouts and would get extremely annoyed and passive aggressive if someone didn't have it (even if they missed the class where he handed it out). He was never able to give alternate explanations and always used two or three times as many words as he needed to.