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Why we stopped scoring things with a spreadsheet formula

By Lumora Team

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4 min read

Analytics dashboard with charts on a dark screen

What broke first, and what we built to replace it.

The formula worked, briefly

Our first scoring system was a weighted formula in a spreadsheet. It was transparent, easy to explain, and completely wrong within about four months.

Not because the math was bad. Because the weights encoded assumptions from a specific moment, and nobody revisited them once the business changed underneath.

What replaced it

Agents that explain their reasoning in plain English, so when a score looks wrong you can see exactly why instead of reverse-engineering a number. If the reasoning can’t be explained in one sentence, it’s too complicated to trust.

The real lesson

Transparency isn’t about showing the formula. It’s about being able to answer ‘why did it do that?’ in the moment someone asks — usually while they are already annoyed.

WRITTEN BY

LT

Lumora Team

CATEGORY

Product

PUBLISHED

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