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Excel Still Counts February 29, 1900, a Day That Never Happened, Because Lotus 1-2-3 Did, and Microsoft Says Fixing It Would Shift Almost Every Date

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Excel Still Counts February 29, 1900, a Day That Never Happened, Because Lotus 1-2-3 Did, and Microsoft Says Fixing It Would Shift Almost Every Date
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Pardo and Landau's 1970 Patent Let Spreadsheet Formulas Sort Themselves, and Its Owners Sued Lotus 1-2-3 With It

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