As a banker, I can't help but analyze what caused the disaster. The reason why there are two indicators is to prevent one from malfunctioning and the other to control risks. The person in charge of BP in the film concludes that the indicator is faulty when an indicator shows abnormality, and the risk is zero by relying on the other indicator alone, and it is precisely the value that is relied on that is the real problem, because the card is stuck. Living. Totally subjective. That's why the two detectors must be identical.
The correct way should be, when an exception occurs, to study why the exception occurs. When the two numbers are inconsistent, it means that there is definitely a problem with one of them. A rigorous approach should be followed to determine the existence of a risk, rather than a safe state in the face of numerical anomalies. It is foolish to expect nothing bad to happen unprepared.
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