Community sits inside City, City inside Region — drawn on real ground. Above the ceiling, two frames the index only reads.
The matryoshka on real geography — step through the scales the index aggregates, and the boundaries it only reads. Boundaries approximate in v0. The matryoshka is the index's nesting rule: Community measurements travel whole into City, City into Region — and stop there. Each scale's reading is the same product: DIDO — data in, data out, what a place can make and share — times (1 − PITO) — products in, trash out, what it still imports and wastes — times ρ, the response coefficient: how fast observation becomes action. Bioregion and Planet draw dashed and muted because they are context, never aggregation targets.
- the governance ceiling — aggregation stops here
The interactive map requires network access and JavaScript — Leaflet 1.9.4 and the CARTO basemap load from CDN. The scale ladder and the reading card on this page still describe each scale without it.
Barcelona is the deep pilot — drawn at all three nested scales, with its bioregional envelope dashed above them. Boston, Santiago and Bali enter as markers in v0; their nesting arrives with live ingestion. Every outline on this surface is hand-drawn and approximate: the geometry teaches the nesting rule, it does not assert borders. The lesson the map insists on is the same one every other surface makes — three scales aggregate, two are only read, and the iron rung in the ladder is where the difference lives.
↪ Return to the aggregation atlas — the same rings as a diagram — read the scale-by-scale walk, or open the aggregation rules for the method behind each roll-up.