I highly agree with you. I remember back in my university days (now long ago). We'd be in chemistry class trying to copy from the professor's writing on the boa

I highly agree with you. I remember back in my university days (now long ago). We'd be in chemistry class trying to copy from the professor's writing on the board, and he went so fast that he'd be erasing while you were still writing. Spending that time on trying to actually understand (from the student's point) and on explaining more/better instead of writing (from the teacher's point) would have been immensely more useful.