Book excerpt: Curious about how Alsop Architects managed to construct that flying, translucent rectangle at the Ontario College of Art and Design? Wonder about the sustainability of the Genzyme Building? The saying "the truth is in the details" reveals an essential quality of architectural design. How a staircase curves, a roof seemingly floats, or a concrete wall illuminates are critical questions for architects looking at or creating new work. You might forgive designers for closely guarding their signature techniques. Fortunately, Edited bys Christine Killory and Rene Davids culled an amazing collection of the best trade secrets in Details in Contemporary Architecture.