Maryellen Weimer has written a great post about why we’re so slow to change the way we teach. I especially like her point about the isolation of teaching. I’ve become particularly fascinated with that, of late. We almost never have colleagues observe our classes, nor do we share our course evaluations. Essentially, we have no one to actually talk about teaching with using any kind of actual data). People take our word for our classes, so our perceptions are all they have. Such an approach makes it exceedingly difficult to improve.