I think that you read my comment in a way that I didn't intend. "How well" would probably be better phrased as "whether", because "how well" implies a non-binar

I think that you read my comment in a way that I didn't intend. "How well" would probably be better phrased as "whether", because "how well" implies a non-binary state. I was picturing a requirements list of numerical ranges, which a specific unit of a product must satisfy. "How well" is what came to mind when I pictured a unit that nearly exceeded the limits of its requirements, compared to a unit that sat perfectly in the middle of the range of every requirement. I never pictured any kind of "judgement call", and I'd hoped that would be clear, in the context that I'd set, talking about objective measurements of quality.