After a rousing conversation about 1) pie and 2) the joys of novels that can’t be made into good movies, we talk about Macmillan’s new decision to restrict library purchases of ebooks. The (questionable) choice leads to some fundamental questions about the publishing and reading landscape: do libraries help or hurt publisher sales? How does an ebook differ from a print book, in terms of library usage and even just as a product bought and sold?