I spent the rainy season of '98 mapping the Shibuya neural grid: seventeen square kilometres of asphalt wired with forty-seven inference layers, each trained to recognize a different vector of identity.
The Architecture of Invisibility
The municipal datasheets describe a privacy-preserving federated mesh. The firmware tells another story: edge extractors in every camera, streetlight, and vending machine, syncing embeddings to an index older than the city charter.
The city does not watch you. The city is watching. You are incidental.
Two weeks ago, the Shibuya cortex went dark for eleven minutes. Underground channels say someone injected noise into the pipeline: not to hide, but to un-train the model in real time.