I Thought Fine-Tuning Needed an ML Team. I Was Wrong.

A few months ago, I almost killed a feature. Not because it didn’t work but because improving it felt… impossible. We had an AI system in production. Users were interacting with it daily. And they were doing something incredibly valuable: 👎 Clicking “thumbs down” At first, we treated it like a metric. Then it hit me: That is the dataset. 🧠 The Moment Everything Clicked Every time a user said: “this is wrong” “this isn’t helpful” “this makes no sense” They were giving us: real-world training da