So I recently spent a semester of hell with my differential equations professor. This guy was so arrogant. He made 2 of the only 3 girls in class cry and one guy I know contemplate suicide because he would destroy these kids, telling them that they weren't cut out for college and making them feel worthless. His lectures were horrible and all over the place. I had to rely on upperclassmen, the internet and other math professors to pass. I don't think he had tenure but god help future students if he did. Nobody had the courage to stand up to this guy so I had written a TERRIBLE student evaluation. It was at my last school so I'm not sure how it turned out.Do you guys think evaluations change anything? And what do you do when the teacher is insufferable, who do you speak to?