The Tyranny of Spreadsheets

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The UK’s contact tracers once lost 16,000 positive COVID cases in their system, leading to an additional 125,000 infections and 1,500 deaths. The tragedy was preventable. Had they double-checked that they were using the correct Excel file format, they wouldn’t have run out of space for their data. They had used the old file format of XLS, which could only hold 64,000 cells; any data inputted after they’d all been used up was simply deleted.
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