A good education is a more personal and independent experience than the article seems to imply. Rarely are the words or presentation of lectures the most valuable thing a school produces; most importantly, education often involves joining a learning community (or synthesizing one's own). This is not trivial: examples on the internet so far produced remain unusual. The video lecture is usually quite awkward: I hazard that it will always remain a limited form, unable to really support much attention or community.