[sheepshear]

I'm saying it's very likely that the business has exactly zero tolerance for the detector missing those signs while there are known, unresolved issues. They can't have something happen when they "knew it could happen".

After "resolving" the issue, then they can resume tolerating the normal probabilities.

In the US, it might be more of a precaution. In Europe, it could be more of a legal obligation. Either way, I doubt engineering has a say in the matter.