Practically speaking, because buildings are made from a series of parts, their assembly relies on techniques of aggregating and manipulating two dimensional materials. Computer fabrication has opened a realm for architects to perceptually heighten and make visible the nature of this accretion through constructed repetition and difference. The subtle variation of a system of elements, the transformation of recognizable materials, and the visceral response, no less, to viewing the result of intensive material accumulation-often understood to be the purview of the low arts or crafts-have been digitally redefined into a vocabulary by which architectural language is transformed. The projects shown in.