| Long asset life vs changing descriptions | The built asset can retain identity while descriptions, model editions, sensor systems, representations, publications, and information uses change. |
| Many useful structures vs exact description identity | Spatial, functional, flow, module, interface, placement, control, and information structures can all matter, but every description still has one exact C.2.1 EntityOfConcern and every selected structure keeps its own A.22 identity. |
| Exchange interoperability vs FPF relation meaning | IFC and related exchange formats carry explicit object and relation data, but exchange content is source description until actual subject relations and selected structures are recovered under their subject patterns. |
| Designation stability vs aspect dependence | A reference designation can make an object retrievable across descriptions while still depending on a declared structuring aspect, designation scheme, exact referent, and qualification window. |
| Auxiliary-view usefulness vs direct claim ownership | Cost, schedule, operation, maintenance, sustainability, and energy views can guide architecture work; their characteristic measurement, Work, temporal-claim adequacy, causal use, evidence, assurance, and currentness claims still require C.16, A.15.1, C.27, C.28, A.10, B.3, and G.11. |
| Live coupling vs currentness | Telemetry and simulations can update a digital-twin description rapidly; freshness and fidelity still bound each claim made from it and do not create physical change. |