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PastHistoryHub on Instagram: "In the 1950s, mechanical calculators didn’t have the safety checks of modern machines. So when someone tried to divide a number by zero, the calculator didn’t display an error—instead, it would enter into a chaotic loop, spinning its gears uncontrollably. This endless motion happened because the machine was trying to calculate something undefined, and it simply didn’t know when to stop. This malfunction became known informally among some engineers and enthusiasts as
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