Architecture as Displacement Field: Built Environment, Material Honesty, and the Ground State of Inhabited Space

We apply the Displacement Framework to architecture, defining S0_built as the inhabited configuration that enables orientation, rest, work, and relation at minimum displacement cost across six dimensions: material honesty, acoustic integrity, luminous quality, thermal register, spatial proportion, and social legibility. The honest materials principle formalizes why natural materials (steel, glass, stone, hemp, cork, clay) reduce displacement cost while synthetic surfaces generate chronic background D(xi).

Wrong-attractor buildings (open-plan offices, airports, institutional corridors) are analyzed. Modularity via steel portal frame and hempcrete infill is formalized as displacement resilience. The autism school — with sensory zoning, withdrawal pod, and spaceship enclosure — is presented as the limit case of displacement-minimizing design.