Function Spaghetti, Where It All Started
Last Monday. One of our dream bots suddenly sent a signal: calculations were getting slower. I opened the Google Sheet and found IF, VLOOKUP, ARRAYFORMULA, and FILTER nested and re-nested in a single column. One cell contained a formula longer than 300 characters.
"I wrote this six months ago, and honestly, I have no idea what it's doing anymore," I muttered to myself.
Handing It Over to Claude Code
Then it hit me. This was exactly what Claude Code was built for. I asked it, "Can you analyze this sheet and explain what each function is doing?"
Claude Code broke down every formula in 30 seconds and added comments. Then came the eye-opening feedback.
「You're trying to do 3 things with 1 formula. Breaking it into 3 steps will make it faster and much easier to maintain.」
Refactoring in 5 Minutes
Following Claude Code's advice, I deconstructed the formulas. The monstrous formula that lived in a single cell now split into 5 clean helper columns.
Results:
• Load time: 12 seconds → 1 second
• Maintenance difficulty: Very high → Low
• Probability a team member can edit it: 0% → 80%
What a Non-Developer Learned
Something clicked for me in that moment.
「The best automation isn't the most complex, it's the easiest to understand.」
It means AI can help with more than just "writing code fast." It can collaborate on refactoring, documentation, and long-term strategy.
The next day, our dream team bots ran lighter and faster. And finally, team members could actually read what the sheet was doing.
One small cleanup rippled across the entire organization's efficiency.
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💡 Tip for Next Week
Are your spreadsheets drowning in formulas too? Try asking Claude Code this.
「Is there a way to make this sheet simpler?」
The answer might not be "more functions." It could be "a cleaner structure."