Shouldn't you be thinking about it? Whether you can control it or not, if you need to rely on it, you should be thinking about it.
Otherwise when an airplane crashes because of a defect in the aluminum, the design team's RCA will have to conclude that the root cause is "a lack of a redundant set of wings in the plane design", because they don't want to pin the blame on the materials quality inspection team mixing up some batch numbers.
If you were relying on something not to fail and it failed, your RCA should state as much. At best in the GP's case they could say "it's our fault for trusting the testing team to test the feature".
Otherwise when an airplane crashes because of a defect in the aluminum, the design team's RCA will have to conclude that the root cause is "a lack of a redundant set of wings in the plane design", because they don't want to pin the blame on the materials quality inspection team mixing up some batch numbers.
If you were relying on something not to fail and it failed, your RCA should state as much. At best in the GP's case they could say "it's our fault for trusting the testing team to test the feature".