I just returned from taking my car for an oil change and safety inspection. I noticed, in shock, that the sticker on the front was over the period and so I rushed to an inspection facility and had it inspected for safety (hoping and praying that I would not be stopped by the police on the way). We do not only regularly inspect our cars, but, as someone who flies a lot, I happen to know (and am very happy that) the FAA inspects every plane on a regular basis. We do inspections all the time; cars, airplanes, fire detectors, hard drives etc. All our transportation methods and many other complex technologies get inspected regularly.