From the author hailed by the New York Times Book Review for his "drive-by brilliance" and dubbed by the New York Times Magazine as "one of the country's most eloquent and acid-tongued critics" comes a ruthless challenge to the conventional wisdom about the most consequential cultural development of our time: the Internet. Of course the Internet is not one thing or another; if anything, its boosters claim, the Web is everything at once. It's become...