Peter Greenfinch, a prominent knol author showed the weakness of Wikipedia. Wikipedia is not democracy. Only one view is supposed to exist on Wikipedia. But not so on knol. On an issue of enquiry, if multiple views are there, they exist as separate knols and readers can read all of them.
This is what is called academic freedom. Each faculty member is free to pursue and publish his research (theories) and disseminate it to his students as well as the entire society through various platforms.
Readers can read more about the discussion on Knol Author Bulletin Board. After some time I shall post the details in this blog also.