Contributor Nikos A. Salingaros is professor of mathematics at the University of Texas at San Antonio, and a well-known architectural theorist and urbanist. He shared the 2018 Clem Labine Traditional Building Award with Michael Mehaffy, and is the winner of the 2019 Stockholm Cultural Award for Architecture. He was the principal editor of Christopher Alexander’s four-volume book "The Nature of Order," and is editor-in-chief of the journal New Design Ideas.