Thanks for answering!
The point of Question 1 is simply whether experienced listener / critical listener is one and the same. To me it is not, to you it is?]
Yes and no. Define the criteria for same perhaps.
{Yes, let's assume bias is always present. And blind testing trumps sighted testing in accuracy, no one doubts that too.
Under the 2 assumptions above, can a 'critical listener' still dispense his work duties *(with sighted testing, just so it's clear. Blind testing is used when required)?]
Yes, which was my poorly explained point - seeing the speaker does not diminish my ability to tell it is out of phase v in-phase. However, trying to describe esoteric or imaginative characteristics which elude measurement and cannot be discovered / replicated by other similar skilled listeners is the line. And this line would be independent of the listeners credentials.
[Corporations think they can, hence they're still being trained, paid and relied upon.
But in your opinion, they (or their professional opinions when doing sighted testing) cannot be depended upon because everyone has bias? So they HAVE to do blind testing for their professional opinions to have any weight at all?
*edited to hopefully make the question clearer]
Yes, and no. Depends what their claims are, what they think they are hearing. Can they support those claims with facts which can be discovered or replicated by others? Or is it all in their head (cognitive and other biases).
[No arguments on that. It is up to the individual to read the data and listen to opinions and eventually make his own decisions.
So Amir gives a professional opinion, it's up to the individual to listen, or not. No arguments too I hope?]
Depends on Amrim’s claims - see above.
If you're referring to the sentences I omitted for brevity, sure.