As Evgeny Morozov demonstrates in “The Net Delusion,” his brilliant and courageous book, the Internet’s contradictions and confusions are just becoming visible through the fading mist of Internet euphoria. Morozov is interested in the Internet’s political ramifications. “What if the liberating potential of the Internet also contains the seeds of depoliticization and thus dedemocratization?” he asks. The Net delusion of his title is just that. … Morozov, born in Belarus, writes about the optimism of the cyberutopians the way Soviet dissidents once wrote about the optimism of Communist utopians.