For years, Excel was powerful but temperamental. You learned pretty quickly to walk on eggshells around your formulas just to keep things from breaking. But while most of us were building workarounds ...

One tiny symbol, but an absurd amount of spreadsheet drama.

Imagine opening an Excel file expecting to see numbers, only to find that every cell displays formulas like =SUM(A1:A10), instead of the actual results. It can be confusing and frustrating, especially ...