Microsoft has embedded a new AI formula, =COPILOT, directly into Excel’s grid, promising natural‑language automation for summarizing text, classifying feedback, and generating content—while simultaneously cautioning users not to rely on it for “any task requiring accuracy or reproducibility.” In other words, Excel’s newest trick can be powerful for brainstorming and text wrangling, but Microsoft explicitly warns against using it for numerical calculations, financial reporting, legal work, or...