This is what he says in conclusion, starting at 3:43 :
In the knowledge network ... the idea is ... that all learning should be in public and be something that makes the public better.
It improves the public. The act of learning, the act of education or teaching are done in public so that others will learn from.
And this idea of education as a public act has tremendous power, tremendous benefits, because it makes the entire network, the entire ecosystem smarter.
If we can apply this within our businesses, our educational system and beyond then our own knowledge network will become much smarter, much faster.
I agree with David. The potential to transform the world through open, public learning is huge and I beleive there is no stopping it.
If you don't know of him, David is a very interesting guy with some very deep knowledge and insights as to the nature of knowledge and learning. He has had a huge influence on my thinking on organizational conversation and my knowledge cafes.
I have put together a YouTube playlist of some of his more interesting videos.