“Sidewalk Labs promises to embed all sorts of sensors everywhere possible, sucking up a constant stream of information about traffic flow, noise levels, air quality, energy usage, travel patterns, and waste output. Cameras will help the company nail down the more intangible: Are people enjoying this public furniture arrangement in that green space? Are residents using the popup clinic when flu season strikes? Is that corner the optimal spot for a grocery store? Are its shopper locals or people coming in from outside the neighborhood?”