Harold, this is a nice description.

There might be a further dimension that is more emotional.
The interweaving that takes place among people, who, together, ask, tell, search and share, grows connections that impact extremely well on their engagement and therefore on the quality of the learning itself. Sort of a self-reinforcing process.
In other words the sense making process grows the content (knowledge) together with the social (emotional) ties thus further improving the content and so on ...