# Modularity **Domain:** Design / Systems Architecture / Governance **Type:** Concept **Maturity:** Developing **Related:** [[Systems Theory]], [[Mid-Century Design Grammar]], [[Transition Architecture]], [[Modular Governance Primitives]], [[Joe Colombo]] ## Definition Modularity is the organization of a larger system from components whose interfaces permit them to be combined, replaced, rearranged, or upgraded without reconstructing the whole. It is therefore both a design technique and a theory of change: stable interfaces can allow a system to evolve through local substitutions. ## Across the Ontology - **Objects and interiors:** [[Joe Colombo]] made modularity visible as furniture and domestic infrastructure that could be recomposed around changing bodies and routines. - **Computation:** modular hardware and software separate functions behind interfaces, making complex systems more maintainable while also hiding dependencies. - **Institutions:** [[Modular Governance Primitives]] apply the same logic to rules and administrative capacities, though political modules cannot be treated as socially neutral plug-ins. - **Continuity:** a modular person-model raises the question of whether replaceable functions preserve a subject or merely preserve an operational pattern. ## Tension Modularity can increase adaptability and repairability, but it can also encourage the fiction that every relationship is cleanly separable. Biological organisms, cultures, and persons often contain entanglements that resist formal interface boundaries. The concept must therefore be paired with [[Systems Theory]] and context-sensitive accounts of dependence. ## Corpus Context In [[articles/Beyond the Sea|Beyond the Sea]], modular furniture belongs to the [[Mid-Century Design Grammar]] that rehearsed reconfigurable bodies and environments before digital culture normalized the same logic in software. The visible joint is important: early modularity often disclosed how components met, while later [[Invisible Mediation]] can conceal both the interface and the institution controlling it. ## Backlinks [[Joe Colombo]], [[Mid-Century Design Grammar]], [[Transition Architecture]], [[Modular Governance Primitives]], [[articles/Beyond the Sea|Beyond the Sea]]