The performance wasn’t uniformally poor across all demographics, there were some subsets of people which this performed worse then others, An expert in ethics w

The performance wasn’t uniformally poor across all demographics, there were some subsets of people which this performed worse then others, An expert in ethics would know where to start testing a model for suspected biases. A simple QA of the model—particularly if the QA team is not very diverse—is more likely to fail at testing for these biases.