Hello Beautiful! Secret May Day Message in U of C Sculpture? The Archives May 4, 2008 The shadow cast by the "Dialogo" sculpture could have a hidden message. Heather Raffo and Kelly Kleiman listen as Ben Calhoun checks out a sculpture at the University of Chicago that may be an artistic Trojan Horse. Plus, Heather talks about the unintended messages that are sometimes revealed in her own work.