Your Critical Spreadsheet Is a Business Liability Until Someone Else Can Understand It

Somewhere in your business, there's a spreadsheet running a process worth more than most people's salaries.

It has 12 tabs. Maybe more. Pivot tables feeding formulas. Data exports pasted in from three different systems. Manual exceptions logged in columns only one person understands.

That person built it years ago. They've maintained it ever since. They're the only one who knows where the data comes from, which tabs matter, and what breaks when you change something.

Here's the question nobody asks: how do you know it's accurate?

You don't. You trust the person. And that's fine. Until it isn't.

88% of spreadsheets have errors, according to audit research. Not small spreadsheets. The complex, business-critical ones that companies bet real money on.

I worked with a company where one spreadsheet calculated discount credits across their entire customer base. Seasonal data. Changing rules. Returns that shift the numbers after the fact. One person managed all of it.

She was excellent at her job. That was the problem. Because excellent made it invisible. Nobody questioned it. Nobody could.

AI can't replace that person's judgment. But it can document the logic. It can rebuild the calculations so others can follow them. It can flag when inputs look wrong.

The goal isn't to fire the wizard. It's to make sure the magic doesn't disappear when they do.