I think also the flyswatter works because it does not displace air the same way that your hand does when you're trying to smack a fly with it. Flies can tell when something is headed their way because they feel the air move.
By that logic a speedometer is an anti pattern and your car should just send up an alert when you're speeding... since when is getting accurate real-time information a bad thing?
Now that we have so many digital devices with GPS, why not go with continuous time zones? In the sense that if I move a certain distance to the east the time will change by a certain number of minutes, rather than chunking everything into hours. Seems much more accurate and useful.