What criteria do we use to judge art? During the opening of the 4th Berlin Biennial in March, Thomas Demand, Mark Godfrey, Jörg Heiser, Jennifer Higgie, Adrian Searle, Polly Staple and Tirdad Zolghadr gathered on a Saturday afternoon in frieze’s Berlin office to informally discuss, over cheese and strawberries, this very question
Directed for the first time by two women, María de Corral and Rosa Martínez, this year's exhibition includes 70 participating countries and 30 collatoral events