Architectural researchers have used software to model new conceptions of design. Under the advice of Charles Eastman and artificial intelligence pioneer Allen Newell, Chris Yessios developed an early software for urban design, called CISP, as part of his doctoral dissertation completed at Carnegie Mellon University in 1973. The image shows a 2019 interactive reconstruction of this sytem by the author, and Harshavardan Kedia (courtesy of the author)