Working with your own data.
THE DIVISION THAT MATTERS
The spreadsheet calculates. AI explains, structures and writes formulas.
Never the reverse.
WHERE IT HELPS
Writing formulas Explaining what a formula does Structuring a sheet Cleaning and reformatting data Interpreting results you calculated
FOR FORMULAS
"Write a formula that [does what]. My data is in columns [describe]."
Test it on a few rows before applying it to everything.
FOR UNDERSTANDING SOMEONE ELSE'S SHEET
"Explain what this formula does, step by step."
Genuinely useful for inherited spreadsheets nobody understands.
FOR CLEANING DATA
"Here are inconsistent entries. Produce a standardised version."
Check the output against the original.
WHAT TO NEVER DO
Accept a calculated total from the model Apply a generated formula across a sheet without testing it Replace data without a copy of the original
