If their students aren't learning, then they are not teaching. Adapt to global, auditory, tactile & visual learners. - Ace Antonio Hall
Metaphorically, Tom said, if you take knowledge as light, and ignorance as dark, there does sometimes seem to be a real presence to the dark -- to ignorance. Something more tactile and muscley than just lack of knowledge. A sort of will to ignorance. It would explain some politicians. - Elizabeth Moon