The New York Times' Bill Keller observes that Johannes Gutenberg was "the Mark Zuckerberg of his age." He also worries that "Facebook friendship and Twitter chatter are replacing real rapport and real conversation."The Zuckerberg Galaxy is a communication practitioner's tribute on the centennial of the greatest modern communication theorist, Marshall McLuhan. Fifty years ago in The Gutenberg Galaxy, McLuhan foresaw personal computers, the Internet, Google, Wikipedia, and e-commerce. Joseph P. Duggan shows how the thought of the man who first perceived the global village can guide us through today's challenges of business management and innovation. He also addresses commentators such as Keller who worry that new social media may be dragging us into a moral maelstrom.Duggan's career includes posts in the White House as a presidential speechwriter, in the State Department as an advisor to senior Reagan administration diplomats, in the newspaper business and in corporate communication.