Paper, cardboard, plywood, light-decidedly conceptual and materially ephemeral, Tobias Putrih's projects draw on the visionary concepts of architecture and design and utopian ideas of the 20th century avant-gardes. This book traces Putrih's investigations into the heritage of architectural experiments such as the works of Buckminster Fuller and Friedrich Kiesler. Perceptron is the first comprehensive survey of Putrih's work that oscillates between architecture, sculpture, and science. Through an encyclopedic array of reference materials and critical texts, it examines Putrih's practice in the context of architectural and design history as well as the history of cybernetics, and offers a richly illustrated study of Putrih's modifications of public spaces, experiments with collective form, as well as his immersive temporary environments created out of everyday materials.