The class discussion I led today, on the "biggest problem in the world today" went okay for the most part. But some students seemed to get irritated at others, which sort of scared me. It's said that students learn by discord and having their beliefs challenged. I hope so. I had been pretty successful up to this point to avoid squabbling in class.
Oh well. We'll read and discuss Einstein's "The World as I See It" essay.
But I do dislike those right/left bickering matches.