How a student project turned into a lesson about humility, hard negatives, and why the best models know when to shut up.

The number that wouldn't leave me alone

I remember the exact article that ruined my week.

It was a study saying that diagnostic errors affect around 12 million adults in the US every year. Twelve million. That's roughly one in every twenty outpatient visits, and a decent chunk of them cause real harm.

I read it, closed my laptop, and then reopened it ten minutes later because my brain was doing the thing it does the "but what if you could just…" thing.