Yehoarm Gordon

He didn't knew the material well, was unable to answer questions that side stepped the material or that were in the material. Had mistakes in his proofs and calculations and his lectures weren't too usefull to learn the material. He really needs to polish his knowledge in probability theory and how to teach.

He wouldn't listen to students who try to correct him and will not adequately answer questions, was hostile to a student who tried to remark on his teaching.