In The Architectural Relevance of Cybernetics, Gordon Pask advances a radical reconceptualisation of architecture as an ensemble of dynamic, self-regulating systems rather than inert formal artefacts, thereby aligning design with the principles of feedback, adaptation, and purposive control. As articulated in the opening pages of the text, cybernetics introduces a paradigm in which architecture operates through circular causality, integrating human behaviour, environmental responsiveness, and computational prediction into a unified framework . This theoretical shift displaces the static doctrines of “pure architecture,” replacing stylistic determinism with mutualistic interaction between structure and inhabitant, wherein buildings simultaneously serve and regulate their users. The argument develops through a nuanced synthesis of functionalism, holism, and evolutionary thinking, positing that architectural systems must incorporate rules for growth, adaptation, and temporal transformation, much like living organisms. A salient case emerges in the discussion of the Fun Palace by Cedric Price, identified as an early exemplar of system-oriented design operating across extended temporal cycles, where programmability and user feedback dictate spatial reconfiguration . Here, architecture becomes an anticipatory medium, capable of modelling and predicting social and spatial behaviours through computational analogues. Ultimately, Pask culminates in the striking proposition that design constitutes “control of control”, elevating the architect to a meta-systemic agent who orchestrates adaptive environments rather than fixed forms. This redefinition establishes cybernetics not merely as a technical adjunct but as the epistemological foundation for a responsive, participatory, and evolutionarily attuned architecture. Pask, G. (1969) ‘The Architectural Relevance of Cybernetics’, Architectural Design, September, pp. 494–496.