Microchips, wires and a circuit board punctuate a polished mahogany panel called Dialogical Drawing that hangs nearby. An unseen microphone gathers comments of gallery visitors, and transmits them to an identical piece hanging in a museum in São Paulo, Brazil. A small speaker provides the Portuguese and English comments to the viewers in Lexington, who are surprised to learn that a background noise that's been part of the sound is heavy rain outside the museum in São Paulo.