This study revisits The Red Book, the foundational but long-overlooked
research document that guided the conception of Festival Plaza for Japan's
Expo '70. Conceived by Arata Isozaki and collaborators under Kenzo Tange's
laboratory, The Red Book envisioned a technologically responsive "managed
plaza" -- a new urban typology merging architecture, performance, and
technology into an interactive system. Integrating robotics, computer
control, and feedback mechanisms, it proposed a space shaped by human
participation, linking Japanese festival (matsuri) traditions to cybernetic
experimentation and the cultural renewal of public space in postwar Japan.
Though many ideas remained unrealized, The Red Book embodied a radical
synthesis of architecture, media, and social theory, revealing a collaborative
model of design that anticipated later concepts of responsive environments.
Its ongoing relevance lies in its speculative approach to technology and civic
space. As both research document and design manifesto, it exposes tensions
between control and freedom, spectacle and participation. The translation
and critical study of The Red Book illuminate how Expo '70's visionary
ambitions prefigured current debates on interactivity, governance, and the
relationship between architecture, society, and information systems.
