[prossercj]

Strong agree. This reminds me of one of my pet theories: that research and education are fundamentally different skills. A good researcher should be flexible and open-minded, almost to a fault, but a good educator needs to be committed to certain beliefs in order to teach them. More important, an educator should instill good habits (even if those habits involve asking good questions) and set a good example, a requirement entirely lacking from research.

So why do all of our universities only employ teachers who have been trained as researchers?

I think much of the 80% grinding that you describe is just the publish-or-perish mindset of graduate school, which the teachers pick up along the way (I'm not faulting them so much as the process). It's more about appearing to know, rather than knowing. This may be what you have to do to survive in a competitive research environment, but one is left wondering what any of that has to do with educating our children, especially the majority who will never become researchers.