Can the sum of our ideas be reduced to "intellectual property"? Or should all information, all knowledge, be set free? As we rethink our institutions governing copyright and intellectual property in the digital age, what touchstones, what principles, should we look to? What is at stake in the legislative battle over the ownership of culture?Atlantic Unbound has invited Charles C. Mann -- the author of The Atlantic's September cover story, "Who Will Own Your Next Good Idea?" -- and a panel of other expert commentators, to debate these questions.