After 15 seconds of music, the video presents Margaret Crawford introducing Keller Easterling, who notes that besides her influential theoretical scholarship, publishing and teaching, she has also worked as an architect, and writen and produced several plays. Easterling begins with a general discussion of the processes and relationships evoked by her theme of networks. She talks about spatial economies based on addition or adjustment, often based on biological or neurophysiological models. Easterling discusses another network process: subtraction. She discusses the U.S. highways system as an "economy of erasure." Easterling discusses interrelated residential, geotechnical and hydraullic networks. Easterling discusses electronic networks, noting that they will probably render some aspects of architecture obsolete, while giving other aspects new significance.