Flowcharting From Abstractionism to Algorithmics in Art and Architecture is a 140-page book by Matthew Allen published by gta Verlag in January 2023. The book is based on Allen's Harvard University Graduate School of Design dissertation research. \nThe book discusses how the modernist program of rationalizing creative practice between the 1930s and 1960s took a bureaucratic turn, and how decades of avant-gardist experimentation prepared the way for the computer's entry into the architectural scene. \nIt also discusses how abstract flowcharts can be translated into concrete instructions, where things that were only hinted at in the flowchart must be worked out more precisely.\nBy the time the computer arrived on the architectural scene, its place had been prepared by decades of avant-gardist experimentation. The modernist rationalization of creative practice took a decidedly bureaucratic turn between two generations of constructivists in the 1930s and 1960s. \nFrom Paris to Cambridge, artists, designers and architects tried to crack the code of artistic genius to democratize the creation of better environments, thus stimulating nascent algorithmic techniques. Their motivation emerged from attempts to understand art and architecture through serial effects. By adopting flowcharting procedures from scientific mar agement, they enacted a paradigm shift that had long bee a cherished dream of modernism, replacing composition with organization as the basis of design.