{"version": "1.0", "type": "rich", "title": "You know how police car sirens often have multiple sounds and the operators can kind of switch between them or flip one on and...", "author_name": "kontextmaschine", "author_url": "https://kontextmaschine.com", "provider_name": "kontextmaschine", "provider_url": "https://kontextmaschine.com", "url": "https://kontextmaschine.com/post/86849691493/", "html": "<p>You know how police car sirens often have multiple sounds and the operators can kind of switch between them or flip one on and off real quick for a blippy effect? I wonder if experienced cops can tell who&rsquo;s driving a squad car by the sound of their siren, like birdkeepers can distinguish between birds by the subtleties of their call.</p>"}