“The Rise of the Creative Class gave hope to many in Massachusetts, which boasts the best-educated workforce in the nation and is on its way to becoming one of the most diverse and gay-friendly states in the country. But Florida’s new book, ‘The Flight of the Creative Class’ (HarperBusiness), is more likely to cause night sweats. It tells us that, in part because of new attitudes toward immigration since 9/11, we’re in danger of falling behind not only Austin but also Australia, and raises the possibility that, after a century or two of sending many of its hardest-working natives to Boston, Dublin may finally get its revenge.”