That's still unnecessarily pessimistic. You can examine the various types of unreliability you're getting from your test techniques to try to drive an understan

That's still unnecessarily pessimistic. You can examine the various types of unreliability you're getting from your test techniques to try to drive an understanding about the operating environment. If you have something in front of you, there's really no reason you can't at least try to come to some kind of understanding of it. Then do your best to communicate your findings.