Digital technologies have changed architecture--the way it is taught, practiced, managed, and regulated. But if the digital has created a "paradigm shift" for architecture, which paradigm is shifting? In The Alphabet and the Algorithm, Mario Carpo points to one key practice of modernity: the making of identical copies. Carpo highlights two examples of identicality crucial to the shaping of architectural modernity: in the fifteenth century, Leon Battista Alberti's invention of architectural design, according to which a building is an identical copy of the architect's design; and, in the nineteenth and twentieth centuries, the mass production of identical copies from mechanical master models, matrixes, imprints, or molds. The modern power of the identical, Carpo argues, came to an end with the rise of digital technologies. Everything digital is variable. In architecture, this means the end of notational limitations, of mechanical standardization, and of the Albertian, authorial way of building by design. Charting the rise and fall of the paradigm of identicality, Carpo compares new forms of postindustrial digital craftsmanship to hand-making and the cultures and technologies of variations that existed before the coming of machine-made, identical copies. Carpo reviews the unfolding of digitally based design and construction from the early 1990s to the present, and suggests a new agenda for architecture in an age of variable objects and of generic and participatory authorship.

In this companion volume to "Iconology", the author extends his investigation to pictures - the concrete, representational objects in which images appear. Although we have many words about pictures, Mitchell notes that we do not yet have a satisfactory theory of them. What we have is a variety of disciplines - semiotics, philosophical inquiries into representation, new departures in art history, studies in mass media - that attempt to converge on the problem of pictorial representation and visual culture. Identifying the problems inherent in the attempt to master visual representation with verbal discourse, Mitchell proposes instead to "picture theory." He looks at the way pictures function in theories about culture, consciousness, and representation, and at theory itself as a form of picturing. What precisely, he asks, are pictures (and theories about pictures) doing now , in the late 20th century, when the power of the visual is said to be greater than ever before, and the "pictorial turn" supplants the "linguistic turn" in the study of culture? Focusing on Spike Lee's "Do the Right Thing", Oliver Stone's "JFK", and television coverage of the Gulf War, he examines the capacity of visual images to awaken or stifle public debate, collective emotion, and political violence. An "applied iconology," this volume by one of America's leading theorists of visual representation offers an account of the interplay between the visible and the readable across the culture, from literature to visual art to the mass media.