The Longest Now

Nathan  Myrhvold points out the extraordinary value of Wikipedia, and how hard it is to assign value to something priceless, in this chat with Bill Gates.  We should take care not to undervalue the results of our concerted work — it is much greater than a few hundred thousand hours of intelligent effort, or a few million pages of printed informational text (both of which are, for most jobs or publications, not universally available at negligible transaction cost).