I agree with all of that. The question though is how to relate (a) our ability to detect differences with short segments to (b) differences experienced in longer term normal listening, in which conscious and subconscious perception may be operating differently than in the short-term testing where the focus is on trying to consciously detect differences, and subconscious perception may be working differently. I do suspect that null results in the short term testing indicate insignificant differences for long term listening, but I'm not sure, and I'd like to see some solid evidence of the connection. For example, maybe a small difference in the short term (less or more bass, less or more of some type of distortion, etc.) isn't consistently consciously detectable or seems insignificant, but in the long term it may be significantly more pleasant or annoying, and the difference may be perceived mainly subconsciously without being able to consciously point out the difference. I'm sure many of us have had the experience of there being a slight hum or high-frequency whine in our sound system or environment, and we fail to notice it because it's constant, but we notice when it suddenly goes away, and we realize it was subconsciously bothering us all along.