Knowing knowledge

Just read about George Siemens' new book 'knowing knowledge'. As it is 157 pages long I haven't managed to read all of it yet, but it looks very interesting. He poses interesting ideas on knowledge and at the first instance it seems to me that he has very easily disregarded the way knowledge has been developed and created over the past centuries. I agree that Web 2.0 tools provide us with interesting new possibilities for networking and communication, but that they will be maningful in the creation of knowledge is in my view not clear yet. Communication theories by Habermas and Heidegger put in doubt the creation of knowledge in a meaningful way through the use of technology as the commmunication facilitated through technology is very different from face to face dialogue.