This glossary consolidates governed concept modules and separates foundational thesis terms from supporting clarification terms.

Core thesis concepts

• actor — a schematic primitive of the Generative Grammar (Chapter 6, Section 6.1): the human participant a requirement addresses (participant, resident, wheelchair user, support worker). Made explicit under the cognitive primitive–composite–module re-stratification; inherits the participant lemmas formerly recorded under role, while role becomes a composite expressed through serves_role.

• ageing in place Ageing in place is the sustained ability to live safely and meaningfully in one’s home and community as needs and capacities change.

  Mentioned in: Ch 10, Front matter

• bidirectional conversion Bidirectional conversion is the capability to map floor plans into a textual representation and reconstruct floor plans from that representation with controlled loss and explicit assumptions.

  Mentioned in: Front matter

• diachronic Diachronic describes change through time. In housing, diachronic change includes shifting capability, household structure, care arrangements, and regulatory expectations across the life-course.

  Mentioned in: Ch 1, Ch 4, Ch 10, Front matter

• housing optionality Housing optionality is the set of feasible, timely, and affordable housing adjustments available to a household as conditions change.

  Mentioned in: Front matter

• housing trajectories Housing trajectories are longitudinal housing pathways composed of states, transitions, and turning points that accumulate advantage or vulnerability over time.

  Mentioned in: Front matter

• interoperability Interoperability is the capacity to exchange information across tools, actors, and phases without losing semantic intent. It is not merely file transfer: interoperability requires that meaning and constraints survive translation.

  Mentioned in: Ch 1, Ch 3, Ch 9, Ch 10, Ch 11, Ch 12, Front matter

• life-course housing need Life-course housing need is the changing fit requirement between households and dwellings across developmental, social, and health transitions rather than a fixed age-band category.

  Mentioned in: Front matter

• modularity Modularity is an architectural property of bounded interaction: dense internal coherence is preserved while exchanges across boundaries are governed through explicit interfaces. In classic accounts, modularity manages change by hiding volatile details behind stable contracts.¹²

  Mentioned in: Ch 1, Ch 2, Ch 3, Ch 4, Ch 5, Ch 6, Ch 7, Ch 8, Ch 10, Ch 11, Ch 12, Front matter

• representation Representation is used here in an operational sense: the objects, relations, and permissible transformations a system can express; what must be explicit rather than inferred; and what survives exchange without semantic loss.

  Mentioned in: Ch 1, Ch 5, Ch 11, Ch 12, Front matter

• round-trip fidelity Round-trip fidelity is the degree to which a floor plan representation preserves relevant geometric, topological, and semantic constraints after an encode-decode cycle.

  Mentioned in: Ch 1, Ch 2, Ch 7, Ch 9, Ch 10, Front matter

• serialisation Serialisation is the encoding of representational state into a stable, exchangeable textual form so that structures can be stored, diffed, transported, and reprocessed across tools and actors.

  Mentioned in: Ch 1, Ch 7, Ch 11, Ch 12, Front matter

• structural coupling Structural coupling is a history of recurrent interaction through which a system and its environment become mutually adapted and constrained.

  Mentioned in: Front matter

• synchronous Synchronous describes a point-in-time framing: requirements are treated as satisfiable at a moment through a one-shot specification and a one-shot check. In housing, synchronous governance appears in certification and compliance regimes that validate an end-state snapshot.

  Mentioned in: Ch 1, Front matter

• text-based floor plan representation A text-based floor plan representation is a machine-processable textual encoding of plan semantics and geometry (for example, graph tuples, token sequences, or structured JSON) that can be interpreted by humans and/or computational systems without relying on raster drawing interpretation alone.

  Mentioned in: Front matter

• verification Verification is the process of checking whether a design, model, or dwelling satisfies stated requirements. Verification is low-friction when constraints are explicit and queryable; it becomes high-friction when meaning is implicit in drawings or depends on tacit interpretation.

  Mentioned in: Ch 1, Ch 3, Ch 4, Ch 10, Ch 11, Ch 12, Front matter

Clarification concepts

• adaptable housing Adaptable housing is housing designed so that key elements can be modified over time as needs and contexts change–ideally quickly, safely, and at lower cost than ad hoc retrofit.³

  Mentioned in: Front matter

• adaptation Adaptation is the governed modification of a dwelling, component, or rule-bound arrangement in response to changing functional conditions across time.

  Mentioned in: Ch 1, Front matter

• allostasis Allostasis is the achievement of functional stability through behavioural or physiological change in response to stress and variability.

  Mentioned in: Front matter

• autopoiesis Autopoiesis is the self-producing and self-maintaining organisation of a system that preserves identity while components and states change.

  Mentioned in: Front matter

• BIM Building Information Modelling (BIM) is a digital approach to representing built assets using structured model data rather than only drawings. In practice, BIM is often used within toolchains that still validate deliverables as point-in-time artefacts, which limits how well models support lifecycle adaptation and re-checking after change.

  Mentioned in: Ch 1, Front matter

• boundary conditions Boundary conditions are the explicit scope statements under which a design theory’s claims are warranted to apply: the contextual presuppositions, environmental constraints, and use settings that must hold for the artefact’s prescriptive propositions to retain their evaluative force, declared as integral components of the theory rather than appended as late caveats.⁴

  Mentioned in: Ch 1, Front matter
  Mentioned in: Ch 1, Ch 3, Ch 4, Ch 5, Ch 10, Ch 11, Front matter

• boundary governance Boundary governance is the meta-question — and the corresponding rule apparatus — of how module boundaries are stipulated, made observable, monitored across change, and revised when revision is warranted, such that the interface contract at every boundary remains finite, declared, and accountable rather than tacit or interpretively reconstructed.⁵⁶

  Mentioned in: Front matter
  Mentioned in: Ch 1, Ch 3, Ch 6, Front matter

• bounded interaction Bounded interaction is the property that dense internal coherence is preserved while cross-boundary exchanges are restricted to explicit interfaces.

  Mentioned in: Front matter

• CAD Computer-Aided Design (CAD) refers to software-supported drafting and modelling used to author and document design. CAD workflows historically privilege geometric description and document outputs, which can make semantic intent and constraints difficult to preserve across handovers.

  Mentioned in: Ch 1, Front matter

• Cognitive cost Cognitive cost is the mental effort required to interpret, reconcile, and reason about a representation well enough to act safely. In housing delivery and adaptation, cognitive cost rises when intent is implicit, dispersed across documents, or lost across handovers.

  Mentioned in: Front matter

• cognitive map A cognitive map is an internal representation that supports orientation, navigation, and updating under change–commonly discussed in relation to how organisms move through space. The concept emphasises that robust action depends on stable substrate plus meaningful anchors and transition logic.

  Mentioned in: Front matter

• complex adaptive system A complex adaptive system is a system in which many interacting agents co-produce macro-level behaviour through feedback, adaptation, and path-dependent dynamics. Causal effects are often delayed, non-linear, and distributed across interacting components rather than localised in one decision point.

  Mentioned in: Ch 1, Ch 3, Ch 4, Ch 5, Front matter

• complement tier (superseded; also governed complements, complement library) — see governed instance library, the revised name for Layer 3 of the Governed Kernel Architecture. The earlier labels named the same referent — the slot, its contents (per Baldwin & Clark), and the artefact respectively — and are retained here only as cross-references.

  Mentioned in: Front matter

• configurative plane The configurative plane is the representational layer that binds identity and intent to assemblies of primitives (e.g., rooms, paths, interfaces), so that “what something is for” does not have to be re-inferred from geometry alone.

  Mentioned in: Front matter
  Mentioned in: Front matter

• context Context is the declared boundary condition set within which claims are interpreted, design choices are justified, and evaluation outcomes are judged. It includes problem setting, actors, constraints, timescale, and transfer limits.

  Mentioned in: Front matter

• controlled coupling Controlled coupling is coupling that is explicit, bounded, and governed through defined interfaces, rather than hidden in tacit conventions or informal dependencies.

  Mentioned in: Front matter

• coordination requirements Coordination requirements are the minimum cross-boundary communication, dependency resolution, and verification actions needed for a system to remain valid during change.

  Mentioned in: Ch 3, Front matter

• delays and path dependence Delays and path dependence in housing refer to the combined mechanism by which non-convex adjustment costs impose delay in housing transitions and early trajectory conditions constrain later feasibility, such that misfit accumulates rather than dissipating and household pathways resist correction even when current circumstances would theoretically permit it.

  Mentioned in: Front matter

• design rules Design rules are explicit, stable coordination rules that separate what is fixed at system level from what can vary locally within modules. They govern interfaces, compatibility, and verification expectations so distributed design work remains coherent.

  Mentioned in: Ch 1, Ch 2, Ch 3, Front matter

• design science research Design science research is a research paradigm that produces and evaluates purposeful artefacts to solve class-relevant problems while extracting transferable design knowledge. Its quality depends on explicit problem grounding, explicit artefact logic, and explicit evaluation criteria.

  Mentioned in: Ch 1, Ch 4, Ch 5, Ch 6, Ch 8, Front matter

• design theory Design theory is a structured explanatory-prescriptive account of how and why an artefact class should produce desired outcomes under stated conditions. It specifies constructs, principles, justificatory knowledge, boundaries, and testable propositions.

• distributed agency distributed agency denotes a named construct used in this thesis to state and test claims about housing representations and governance under change.

  Mentioned in: Ch 1, Ch 3, Front matter

• entropic loss Entropic loss is a representational failure mode where semantic intent decays across handovers: what begins as meaningful constraints and rationale gradually collapses into inert geometry, prose fragments, or tool-specific conventions.

  Mentioned in: Front matter

• environmental press Environmental press is the total demand load imposed by the dwelling and social setting on a person’s available competence.

  Mentioned in: Ch 2, Front matter

• epistemic uncertainty Epistemic uncertainty is uncertainty arising from incomplete knowledge of causal structure, delayed effects, and confounding in open systems.

  Mentioned in: Front matter

• explicit invariants and degrees of freedom Explicit invariants and degrees of freedom is the paired-contract commitment in which a module boundary states, in declared and checkable form, both what must remain true across permitted change (invariants) and what is permitted to vary, within what range, without escalating beyond the module (degrees of freedom).

  Mentioned in: Front matter

• form function principles Principles of form and function are the component of the Gregor-Jones design-theory anatomy that translate between what the artefact is (its structural, representational, and architectural commitments) and what the artefact does (the governance functions those commitments enable), specifying both halves of the translation in a form that downstream artefact decisions can be checked against.

  Mentioned in: Front matter

• frame of analysis A frame of analysis is the declared perspective that fixes what counts as a system element, what interactions are measured, and what boundary conditions are considered valid for evaluation.

  Mentioned in: Front matter

• frozen core The frozen core was the original name for the stable base of the module system; in the revised architecture the positive construct is the governed kernel, and “frozen core” is retained only in its pejorative sense — the failure mode in which a core over-expands into rigidity and forbids revision outright, trading evolvability for uniformity. The positive base is the deliberately minimal layer of a platform architecture that contains only the stable governance terms required for cross-version comparability and bounded verification (the grammar, module contracts, constituent specifications, and interaction rules that downstream artefacts may consume but not unilaterally alter); that base is now named the governed kernel precisely because it is governed — revisable through a versioned promotion path — rather than frozen.

  Mentioned in: Ch 3, Front matter
  Mentioned in: Ch 1, Ch 2, Ch 6, Ch 9, Ch 10, Ch 11, Ch 12, Front matter
  Mentioned in: Ch 1, Ch 3, Ch 4, Ch 6, Ch 9, Front matter

• functional boundary A functional boundary is a boundary defined by governable exchange conditions and verification obligations, rather than by geometric separation or naming convention alone.

  Mentioned in: Ch 3, Front matter

• governed instance library The governed instance library is Layer 3 of the Governed Kernel Architecture: the governed environment in which concrete baselines, variants, adaptation records, provenance, and supersession are managed. It instantiates the module contracts of the governed kernel (Layers 1 and 2) without altering them, and answers the question what can vary without breaking the system?

• governed kernel (also: Governed Kernel Architecture) — the stable but revisable base of the three-layer architecture (Layer 1 Generative Grammar + Layer 2 Modular Contract System); see the concept note. The governed kernel is the stable but revisable base of the three-layer Governed Kernel Architecture: Layer 1 (the Generative Grammar — the stratified vocabulary of primitives, operators, and composites) together with Layer 2 (the Modular Contract System — the module contracts, constituent specifications, constraints, interface types, and verification sequence). Downstream artefacts may consume but not unilaterally modify the kernel; the kernel itself is revisable only through a rule-bound, evidence-based, versioned, and auditable promotion path. Its stability is disciplined revisability, not immobility.

• functional usability verification Functional/usability verification is checking that a dwelling works as an integrated system for the intended occupants, not merely that individual features satisfy dimensional proxies.

  Mentioned in: Front matter

• geometry Geometry refers to metric and spatial description (shape, size, position). Geometry is necessary for design and checking, but geometry alone typically under-specifies functional and regulatory meaning (e.g., why a clearance exists, what path must remain continuous, what invariants must hold after change).

• grid Grid denotes a stable metric substrate: a coordinate-like basis that makes spatial measurement and comparison reliable. In cognitive science, grid-like systems provide a reusable metric substrate on which environments can be mapped.⁷

  Mentioned in: Front matter

• grid cells Grid cells are neurons whose firing fields form a lattice-like pattern, widely interpreted as implementing a metric code that supports navigation and path integration.⁸

  Mentioned in: Front matter

• homeodynamics Homeodynamics is dynamic stability maintained through continual re-regulation and shifting baselines rather than strict constancy.

  Mentioned in: Front matter

• hypertrophic complexity Hypertrophic complexity is a representational failure mode where meaning is trapped in heavyweight encodings that are difficult to query, extend, validate, or safely change. Complexity “grows” around the representation because changes require global reinterpretation.

  Mentioned in: Front matter

• hysteresis Hysteresis is path-dependent asymmetry where the conditions required to recover a prior state differ from those that caused the transition away from it.

  Mentioned in: Front matter

• IFC Industry Foundation Classes (IFC) is an open, vendor-neutral schema intended to support exchange of building information across tools and phases.

  Mentioned in: Ch 1, Front matter

• information flows Information flows are the pathways by which meaning, constraints, and decisions propagate through a socio-technical system across actors and artefacts.

  Mentioned in: Front matter

• interaction differential Interaction differential is the relative difference between within-cluster interaction intensity and cross-cluster interaction intensity under a declared frame of analysis.

  Mentioned in: Ch 3, Front matter

• interactive plane The interactive plane is the representational layer that carries context and state for a specific dwelling at a particular time, including as-built deviations and the record of permitted changes.

  Mentioned in: Front matter

• interface An interface is an explicit boundary specification that governs interaction: what can be exchanged, what may vary, what must remain invariant, and what must be re-checked after a permitted change.

  Merged aliases: interfaces.

  Mentioned in: Ch 1, Ch 2, Ch 3, Ch 4, Ch 9, Ch 10, Ch 11, Front matter
  Mentioned in: Front matter

• interface control Interface control is the ability to govern exchanges across a boundary through an explicit, finite set of conditions, rather than through tacit interpretation or pervasive coupling.

  Mentioned in: Front matter

• interface drift Interface drift is the failure mode in which the nominal rule surface of a module boundary remains in place, but its meaning changes across actors, revisions, or tools, so comparability decays beneath apparent formal consistency.

  Mentioned in: Ch 3, Front matter

• internal consistency verification Internal consistency verification is checking that changes do not silently violate dependencies across artefacts, phases, or representations.

  Mentioned in: Front matter

• justificatory knowledge Justificatory knowledge is the component of the Gregor-Jones design theory anatomy that carries the body of theoretical and empirical knowledge explaining why the proposed design should produce its intended outcomes.

  Mentioned in: Front matter

• manipulability Manipulability is the ability to perform controlled edits with predictable effects at the level of intent (not only at the level of geometry). A manipulable representation exposes guarded degrees of freedom and makes dependencies explicit, so competent actors can change what is allowed to change without silently violating hidden constraints.

  Mentioned in: Ch 1, Ch 3, Ch 9, Ch 10, Ch 11, Ch 12, Front matter

• module A module is a cluster of system elements whose internal interactions are, within a given frame of analysis, substantially stronger or more frequent than their external interactions. This differential interaction facilitates a functional boundary governing every intended exchange via an interface of finite and expressed set of conditions, thereby enabling the cluster’s interaction with the external environment with reduced coordination requirements while sustaining its role within the larger whole. Evidence anchor: Supplementary Author Research Corpus Assertions.

  Mentioned in: Ch 3, Ch 10, Front matter

• monolithic representation A monolithic representation binds many concerns into a single tightly coupled encoding, making local change difficult because dependencies are implicit and widely distributed. In such representations, a small change can force global reinterpretation and broad re-checking.

  Mentioned in: Ch 10, Front matter

• movement Movement denotes transition logic: the pathways and permissible transformations that connect states. In navigation, movement is not only distance; it is a sequence of permitted transitions under constraints.

  Mentioned in: Front matter

• near decomposability Near decomposability describes complex systems in which short-run behaviour is dominated by within-subsystem interactions, while cross-subsystem effects appear as weaker, slower perturbations. This structure makes systems intelligible and modifiable because local change does not require constant global recomputation.⁹

  Mentioned in: Ch 1, Ch 2, Ch 3, Ch 5, Front matter

• Physical cost Physical cost refers to material and bodily costs imposed by change: waste, invasive works, disruption, and physical burden associated with retrofit or rework.

  Mentioned in: Front matter

• place Place denotes identity and semantic attachment: the ability to treat a location as a coherent unit with meaning (what it is, what it affords, what constraints apply).

  Mentioned in: Front matter

• place cells Place cells are neurons that fire for specific locations, commonly interpreted as supporting place identity and contextual anchoring within a cognitive map.¹⁰

  Mentioned in: Front matter

• Planimetric System The Planimetric System is a representational architecture organised around the grid–place–movement triad, motivated by convergent evidence from spatial cognition. The aim is to separate metric substrate, semantic identity, and transition logic so that meaning can be preserved and updated under change without global recomputation.¹¹

  Mentioned in: Ch 7, Front matter

• platform architecture Platform architecture is a system architecture pattern with a stable core contract and governed complements that can evolve independently under shared interface rules. The key design condition is not static uniformity, but controlled variation with compatibility and verification discipline.

• point-in-time Point-in-time denotes a governance pattern in which compliance and fitness are validated as a snapshot at a single moment (e.g., design approval or certification), rather than as a sequence of permissible changes through the lifecycle.

  Mentioned in: Front matter

• primitive plane The primitive plane is the representational layer that carries stable metric substrate: discrete geometric primitives and coordinate commitments that support measurement and clearance checking.

  Mentioned in: Front matter

• Real cost Real cost refers to direct monetary cost (fees, construction, retrofit, delay penalties, relocation) imposed by design, delivery, and adaptation.

  Mentioned in: Front matter

• regulatory verification Regulatory verification is checking conformance to codified requirements (e.g., building codes, standards, approval rules).

  Mentioned in: Front matter

• representational constraint Representational constraint is the limit on what actors can compare, defend, and enforce, imposed by the artefacts and routines that carry meaning through a system.

  Mentioned in: Front matter

• residential inertia Residential inertia is reduced movement propensity caused by attachment, transaction frictions, and accumulated location-specific capital.

  Mentioned in: Ch 2, Front matter

• rigidification Rigidification is the substrate-induced suppression of adaptability: representational constraints make change costly enough that actors rationally freeze layouts, standardise, and treat adaptation as exceptional.

  Mentioned in: Front matter

• semantic intent Semantic intent is the “meaning that matters” for governance: why an element exists, what role it plays, what constraints apply, and what must remain true after change. Semantic intent differs from raw geometry because it includes functional and regulatory relations.

  Mentioned in: Front matter

• semantic interface A semantic interface is the interface type that governs meaning across a module boundary: it specifies the terms, object identities, and requirement references that must remain interpretable, type-stable, and referentially continuous when an entity is shared between, or transmitted across, adjacent modules.

  Mentioned in: Ch 1, Front matter

• semantic primitives Semantic primitives are minimal meaning units that can be composed, transported, indexed, and checked. The point is not that a primitive captures everything, but that it stabilises a small unit of meaning so interfaces can be explicit and verifiable.

  Mentioned in: Ch 3, Front matter

• semantics Semantics concerns meaning: the relations and constraints that make a representation interpretable and governable (not merely drawable). In rule-based checking, semantics must be explicit enough to query and validate.

  Mentioned in: Front matter

• serialised text Serialised text is the linear, character-discrete encoding of a governed housing representation into a form that is simultaneously human-readable and machine-parseable, such that each token’s type is positively and reliably identifiable and each compositional unit (primitive, module, constituent, interaction declaration) carries an explicit name, type, and scope rather than being implied by spatial position or tool-internal state.¹²¹³

  Mentioned in: Ch 3, Ch 5, Front matter

• serialised transformation logic Serialised transformation logic is the representation of permitted change operations as named, text-expressed grammar constructs that carry explicit preconditions, postconditions, invariant declarations, and responsibility metadata, such that the same notation that captures what a housing module is also captures what may legitimately change about it in a form that survives handover, inspection, replay, and verification without bespoke reconstruction.¹⁴¹⁵

  Mentioned in: Front matter

• Skill cost Skill cost is the dependence on scarce expertise to make small but consequential changes safely. When representations do not expose explicit constraints and permissible operations, routine adaptations are pushed into specialist workflows.

  Mentioned in: Front matter

• stable referential identity Stable referential identity is the property that named entities — modules, primitives, constituents, interaction declarations, baseline-library entries — retain identifiable identity across serialisation, deserialisation, transformation, handover, and tool replacement, such that a reference made by one actor at one time can be resolved by a different actor at a different time without re-interpretation of the underlying object’s name, type, or scope.¹⁶¹⁷

  Mentioned in: Ch 3, Ch 7, Ch 9, Front matter

• standardisation schema A standardisation schema is a representational contract that constrains permissible structure and term-role assignment across the clauses and categories of a regulatory text, converting narrative compliance prose into a queryable, machine-checkable substrate by codifying the mapping from regulatory language to typed primitives and explicit relations under declared validation and ambiguity-handling rules.

  Mentioned in: Ch 1, Ch 5, Ch 9, Ch 10, Front matter

• stratification Stratification is an architectural mechanism that separates representation into planes so coupling is controlled and change can be local. It applies the systems logic of bounded interaction to representation: interfaces define how layers depend on one another.

  Mentioned in: Ch 1, Ch 3, Ch 11, Ch 12, Front matter

• stratified discrete substrate A stratified discrete substrate is a representation designed to be serialisable, comparable, and transportable (discrete), while controlling coupling through layered planes and explicit interfaces (stratified).

  Mentioned in: Ch 1, Ch 6, Ch 11, Front matter

• testable propositions Testable propositions are the component of the Gregor-Jones design-theory anatomy that converts the theory’s claims into statements amenable to empirical examination and internal-consistency checking, distinguishing a prescriptive design theory from an aesthetic, hortatory, or merely descriptive framework by binding mechanism claims to declared indicators, comparator baselines, and falsifiers.¹⁸

  Mentioned in: Front matter

• Time cost Time cost is the delay imposed by coordination, reinterpretation, re-approval, and rework. Time cost increases when artefacts cannot be trusted and must be reconstructed at each handover.

  Mentioned in: Front matter

• transformability Transformability is the ability to perform structured transformations while verifying invariants. A transformable substrate allows change to be expressed as a sequence of named operations with explicit preconditions and postconditions, so validity can be re-checked after each step.

  Mentioned in: Ch 1, Ch 3, Ch 9, Ch 10, Ch 11, Ch 12, Front matter

• transformation Transformation is a change operation applied to a representation. In lifecycle governance, the key question is not “can it be changed?”, but “can it be changed in a bounded way while preserving invariants and remaining verifiable?”

  Mentioned in: Ch 11, Front matter

• transformation interface A transformation interface is the interface type that governs admissible change: it specifies operation types, allowable parameter movement, and invariant-preservation conditions under which local variation remains legitimate.

  Mentioned in: Ch 1, Front matter

• transportability Transportability is the ability to move a representation into a new context while retaining the conditions under which it remains valid. It is interoperability plus trust: meaning should travel with scope, assumptions, and validity conditions.

  Mentioned in: Ch 1, Ch 3, Ch 9, Ch 10, Ch 11, Ch 12, Front matter

• triggered interface checking Triggered interface checking is the verification regime in which a change at a declared boundary condition reactivates a finite, locatable set of re-checking obligations, rather than relying on either continuous whole-system revalidation or ad-hoc, actor-discretionary inspection.

  Mentioned in: Front matter

• trigram (Chapter 3) = triple (Chapter 5) = triplet (Chapter 6, Chapter 7) — the minimum-sufficient three-element governance unit (source–relation–target / entity–relation–qualifier). The label varies by chapter: Chapter 3 §3.3 introduces trigram from formal and cognitive arguments; Chapter 5 §5.1 uses triple to emphasise the applied schema vocabulary (the reconciliation is documented in-text at §5.1:42); Chapter 6 and Chapter 7 use triplet to emphasise the substrate-data vocabulary. The structural commitment is identical across the three labels: each governed representation is a three-element unit with stable identity, typed relation, and scoped qualifier.

• ungoverned complements Ungoverned complements is the platform failure mode in which local elaborations of the platform — case instantiations, transformation sequences, notation expressions, and procedural outputs that should remain rule-bound complements of a shared core — proceed without rule-bounded compatibility, so that hidden coupling accumulates, exceptions multiply without typed justification, and verification scope re-globalises beneath an apparently stable interface vocabulary.¹⁹

  Mentioned in: Ch 3, Front matter

• universal design Universal design is an approach that aims to make environments usable by the broadest range of people, reducing exclusion by designing for diversity rather than by treating accessibility as an exception handled through special adaptation.

  Mentioned in: Front matter

• upstream prevention Upstream prevention is intervention at inflow and early-risk nodes to prevent entry into high-cost housing insecurity states.

  Mentioned in: Front matter

• value conflict Value conflict is disagreement among stakeholders about what ought to be optimised and what trade-offs are acceptable.

  Mentioned in: Front matter

• verification capacity Verification capacity is the system’s ability to check constraints and claims after change without reconstructing meaning from scratch.

  Mentioned in: Front matter

• verification interface A verification interface is the interface type that governs re-checking: it links changes to the evidence, tests, or review procedures that must be reactivated once a boundary condition has been touched.

  Mentioned in: Front matter

• wicked problems Wicked problems are planning problems that resist definitive formulation and definitive solution: there is no stopping rule, and outcomes are judged as better or worse under conflicting value frames rather than as true or false.²⁰

  Merged aliases: wicked problem.

  Mentioned in: Front matter
  Mentioned in: Ch 1, Ch 3, Ch 4, Front matter

• within_context — the tenth relation operator of the Generative Grammar (Chapter 6, Section 6.1): frames a term within a regulatory or situational scope (a design-category context), recorded as a governed link distinct from the context entity itself. Added under the re-stratification to complete the operator layer.

Methodological terms

• census A census, in this thesis, is a complete enumeration of an assembled population rather than a probability sample drawn from it: every unit that passes the screening gate is included, and no sampling frame mediates between the population and the records analysed. The empirical substrate of Chapter 8 is a census of 745 Australian residential floor plans in this sense — the screened, agent-manually extracted stock in full, constructed in two strata (572 October and 173 August), not a sample of it.

  Mentioned in: Front matter

• coverage ratio A coverage ratio, in this thesis, expresses the scale of an assembled census relative to the national stock it is drawn from, offered as credibility context for the corpus’s non-triviality rather than as a basis for statistical generalisation. The 745-plan floor-plan census enumerates roughly one in ten thousand of Australia’s separate-house stock — the 2021 Census of Population and Housing records 10,852,208 private dwellings, of which about seventy per cent are separate houses, approximately 7.6 million.

  Mentioned in: Front matter

• Module-Inheritance Ratio (formerly the Composition-Boundary-Stability Index) The module-inheritance ratio (formerly the Composition-Boundary-Stability Index) is a chapter-level operationalisation of modular fit, defined as the proportion of modules at a given trajectory state that are inherited from the immediate predecessor without spatial change, relative to the total module count at that state: for a state S_n the ratio is |{m ∈ M_n : m ∈ M_{n-1} and spatial_dimensions(m) = spatial_dimensions_{n-1}(m)}| / |M_n|, where M_n is the module set at state S_n and spatial_dimensions is the module’s declared area-and-position vector.²¹

• staged piloting Staged piloting, in this thesis, is the design-science practice of working out a data-processing codification on small, deliberate batches before applying it to a full corpus — building, evaluating, and refining the method, then scaling it under the refined rules. It is method development, not a separate corpus or a sample.

  Mentioned in: Front matter