And to be fair, it doesn't apply to all students. Some come in opinionated, willing to take a stand that A is good and B is bad. Some of them are even willing to rethink their positions when challenged. But they're a minority. I wish I had some way of determining which students are likely to be so non-"judgmental," and some good ideas on how to persuade them that making judgments is a key part, indeed the logical end stage, of the "critical thinking" that all teachers seem to think so highly of.