I don't recall seeing this particular video being posted here previously, even though it dates to 2006.
http://blip.tv/file/956067
"...In the development of Aqua, an 82-story residential high-rise in Chicago, the architects employed both scientific analysis and low tech visualization tools simultaneously in a process to discover the form of the building. These methods and processes are discussed here, shedding light on how the criteria of particular conditions influenced form and its articulation in unexpected ways.
Within architecture, “technology” can explain an application of knowledge occurring at any step of architectural production. The steps include tools used in design such as drawing and modeling; parts of the design itself, such as the curtain wall; and finally, the actual construction of the design. This presentation focuses on technology’s role in the design process for the Aqua tower..."