{"id":"nearby-friends-grid-cell-size-tied-to-threshold","text":"Grid cell size is `distance_threshold_km / 111.0` degrees (111 km ≈ 1° latitude), meaning changing the distance threshold automatically rescales the spatial index","truth_value":"IN","source":"entries/2026/06/05/nearby-friends-nearby_friends.md","source_url":"","source_hash":"","justifications":[],"dependents":["spatial-queries-combine-adaptive-resolution-with-exact-filtering"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"nearby-friends-grid-cell-size-tied-to-threshold","truth_value":"IN","reason":"premise"}]}}