I know "who he is". Do I have to agree with him because he is a professor? Every piece of his writing I saw used the most complicated language possible and the largest amount of digressions to in the end convey nothing concrete whatsoever and this is all the more true of this article. Moreover I think one can not make any serious contribution to cognitive science using the methodology he uses and that what he is doing is akin to people trying to explain "what gravity is" before Galileo came, abandoned the question, and used equations to predict effects of gravity instead. If I am wrong, I seriously would love an explanation of why do you think so.
As others have said Marvin Minsky, who I by the way respect way more than Dennett because in his prime he actually did do real research, had this idea of a "community of agents" thirty years ago or more, in fact he several time claimed that if only he would receive the money to hire programmers he would produce revolutionary AI programs in a matter of months. How this is looked upon by more mainstream scientists one can guess. To me the whole theory is as vague as saying that the brain is made up of cooperating parts. Does any of this lead to testable scientific predictions?