In 1972, we learned from Las Vegas the power of signage, through Robert Venturi and Denise Scott Brown's use of the ‘duck’ and ‘decorated shed’ as metaphors for expressive and symbolic architectureii. In their seminal book Learning from Las Vegas , Venturi and Scott Brown acknowledged the duality of architecture -- its role as both ‘shelter’ in its interiority and ‘signage’ in its communicative, decorative, informative, and symbolic aspects.