Double square brackets appear in structured references in Excel when column headers contain spaces or special characters. They're also inserted into formulas when you reference header and total rows ...

Have you ever opened an Excel file and felt a pang of unease? Rows upon rows of data, cryptic formulas sprawled across cells, and a tangle of manual formatting that seems one misstep away from chaos.

Have you ever carefully crafted a formula in Excel, only to watch it unravel into chaos the moment you copy it across columns? It’s a maddening quirk of Excel tables—structured references that seem to ...