Critic Raimar Stange and curator Christian Kobald on the American art critic Clement Greenberg and the financial crisis. Curator Gianni Jetzer presents the performance “Manon presents Man” as one of his key works. Hans-Jürgen Hafner discusses American conceptual artist Stephen Prina. We visit Markus Schinwald’s big solo show at Kunsthaus Bregenz; the “City of Records”, Bucharest; the Tate Triennial in London; and exhibitions by Diane Arbus, Eva Grubinger, and John Armleder.