when you’re landing planes atop a ship in the middle of the ocean, one error, even a tiny one, could spell disaster. Officers and crew are trained not to assume the system will run perfectly on its own. Instead, they look for the slightest signal that things are going awry. They listen for subtle signs of tension in pilots’ voices when they circle the ship to dump excess fuel. They walk the ship many times a day looking for “foreign objects”—anything that could be sucked into the jet’s engine—basing their scrutiny on the assumption that anything that can go wrong, will. They also devote
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