Among the luminaries who waltzed on stage for conversation were artificial intelligence godfather Marvin Minsky, Boston Scientific founder and billionaire John Abele, Oxbridgian longevity messiah Aubrey De Grey (who's got 536 friends on Facebook), Tesla Motors founder Martin Eberhard, sculptor Chuck Hoberman, Sims creator Will Wright, genomics pundit Juan Enriquez and computer scientist Sandy Pentland from the Massachusetts Institute of Technology.