“L’évolution structurelle de l’opinion publique sous l’effet des intermédiaires de l’information: Pratiques, principes et pathologies de Facebook, Twitter et compagnie [The Structural Development of Public Opinion through Information Intermediaries: Practices, Principles and Pathology of Facebook, Twitter & Co.]", lecture by L. Merten at the Deutsch-Marokkanischen Akademie für Gute Regierungsführung des Auswärtigen Amtes [German-Moroccan Academy for Good Governance of the Department for Foreign Affairs] on 17 November 2017 in Hamburg.