I had someone at work ask me if I was an expert at Excel. I’ve written macros in VBA and made formulas that would have been easier as a macro so I could save them as xlsx instead of xlsm. I said yes, with some hesitation. She asked me if I could help her with a problem and I said sure. The problem was a bunch of hidden cells. At least it wasn’t a bunch of data she’d deleted and wanted me to get back for her.

The amazing part was how hard it was to show the cells in the latest version of Excel.