An anonymous reader writes "Computer science professor Daniel Lemire explains why spreadsheets shouldn't be used for important work, especially where dedicated software could do a better job. His post comes in response to evaluations of a new economics tome by Thomas Piketty, a book that is likely to be influential for years to come. Lemire writes, 'Unfortunately, like too many people, Piketty used speadsheets instead of writing sane software. On the plus side, he published his code on the negative side, it appears that Piketty’s code contains mistakes, fudging and other problems.
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