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HOWEVER, none of this, for a moment, displaces the teacher. On the contrary, it amplifies teacher skills. It may also facilitate the ability for teachers to play to their strongest card:

We should not try to recreate what Salman Khan of the Khan Academy and others are doing so brilliantly, namely to meticulously build up entire curricula on video. No. TED is known for its ability to evoke curiosity, wonder, and mind-shifting insight.  That should be our prime goal here. Short lessons that spark curiosity.