Lawrence Lessig has put the revision of his 1999 book Code and Other Laws of Cyberspaceem online here. The site is a wiki which makes it possible for anyone anywhere to jump in to revise the book. There should be a wiki like this one for every textbook used in schools and the printing of textbooks should cease. That would be a big boon to human learning and saving the trees.
Thanks to Dan Gillmor.
How the best knowledge gets to everybody to learn
