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Automated Train Operation
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<p>Computers don't fail? Won't buy it. When I first started fixing computers (1956), mean up time was but 15 minutes. Sounds unlikely any one would buy or trust one back then, but the government did. When the computer worked, it was really, really fast compared to what had been available. </p> <p>When I retired, they failed a lot less often, but they still failed. And still, even today. For space flight, they used three computers. If one disagreed with the other two, somebody started working on it - fast. </p> <p>And the Air France jet crashed in the Atlantic because nobody knew which direction was up, and it wasn't even a computer failure although the computer might have saved the flight had all inputs to it functioned properly.</p>
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