"Western culture's traditional system of knowledge is a stunning achievement," says author and Harvard Internet scholar David Weinberger at the outset of this thought-provoking video. "It made us the dominant species on the planet." But it was constructed as a series of stopping points: you asked a question, and you got an answer—on the page of a book or newspaper, say, or from an expert or a teacher. That system worked well when knowledge was put down on paper. Now knowledge lives on the hyperlinked Net, and links offer a never-ending invitation to go further, to know more. What are the implications of a future in which human knowledge is no longer a finite compendium of scholarly works but rather a limitless, intricately connected network of people, ideas, and works?"