You simply can not get that kind of experience and its depth of understanding out of a computer. You've got to be in the moment and the intense struggle of a great lecture that hovers in the air as a palbable battle between your own ignorance and the consumate skill of the masterpiece that has engaged you down to your soul---even if you have no such thing. It's a great art of its own.
To my teachers,
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You're damn right Chuck. Teaching is deeply erotic, and what you want is to make your students fall in love or at least see why something is worth loving, worth paying attention to.
Joanna