I just watched this the video that Jon Husband points to in comments on this blog of David Weinberger at the Library of Congress.
watch David Weinberger trace knowledge from Plato and Aristotle through Descartes to the clash between official objectivity and personal subjectivity, moving deftly to the power and believability of human voice on ... of all things ... blogs (especially those with comments capability, which I think must be well in the majority ;-)More formats on David's blog. Classic Weinberger. Excellent stuff. Even the bonus seeing Derrick de Kerkhove make the introduction. ;-)