<p>I don’t think a good teacher minds a lively class discussion, particularly because even experts in their field clearly don’t have all the answers. In fact, it is precisely because a researcher knows better than anyone how complicated the issues are, that those are the classes where you <em>should</em> expect the livliest discussions. </p>
<p>But, judging from the hoary stories I read about supposed bullying in class, it always seems to involve someone who enrolls in an elective they should have known before hand would involve a stance or a core belief they would disagree with. Classic examples are anything to do with gender or race or sometimes even the environment. If you walk into a Gary Yohe economics class at Wesleyan and start questioning the premise that human beings have had a significant effect on global climate change, it might make for an interesting discusson the first time you do it. But, if done repeatedly, I would say, that it <em>could</em> begin to border on class disruption. I’m not saying it is in all cases, but, it is sort of in the eye of the beholder.</p>