JEFF JARVIS — Mark Zuckerberg, founder of Facebook, told what he called a random story — it's a perfect tale for the medium and the age — about empowering collaboration. His sophomore year at Harvard, while starting his company, he failed to study at all for one of his courses; he didn't even go to class. So days before the final, he pulled all the pictures he needed to analyze off the web and put them up on a page online with boxes underneath. He emailed the class and said he'd put up a study guide. Sure enough, in moments, the students filled in their essential knowledge on the art. Zuckerberg got an A. (Mark Zuckerberg, founder of the college social network, was on a panel at Davos, the elite conference in the Swiss Alps, and Jeff Jarvis was taking notes.)