“As co-founder of the Berkman Center for Internet and Society at the Harvard Law School, Professor [Charles] Nesson is renowned for his early interest in bridging technology, law and culture, and his ability to inspire generations of students to see the Internet as a force for positive change, not just cables and computers. But when Professor Nesson, 70, took on the recording industry in an eagerly anticipated civil case here over sharing music online, the champion stumbled.”