One thing is very present in the contribution of this year's director to the sprawling Venice Biennale of art: Daniel Birnbaum has actually curated an exhibition and not simply put artworks side by side, which, unfortunately, is often the case with presentations of this size. Individual pieces on show have been given adequate space, and installations are immaculate. While each room has a clear identity, they also correspond to one other by conceptual or visual affinities or contrasts that make walking through the exhibition an exciting experience.