There's some room between "sensor fusion is fragile enough that if a physical condition persists for an unexpected amount of time the craft is lost" and "all se

There's some room between "sensor fusion is fragile enough that if a physical condition persists for an unexpected amount of time the craft is lost" and "all sensor faults can be handled." Notably, this obviously wasn't a failure case they programmed for. But it does seem a pretty fragile system to throw across the solar system in retrospect.