Be careful, this guy is prematurely senile. In reality, he's probably only 55 or so, but he shuffles and mumbles and rambles like he's 90. I completely would not trust his grading. My roommate and I took AIDS the same quarter, and got almost the same score on the midterm, did the same community service together, and both did pretty well on the final, yet got drastically different grades. The fact that the tests are scantron actually makes it harder because you have to remember which insignificant details he chose to point out about a certain topic, and whether he was talking for 30 minutes about something because it is true, or because it's a misconception.