Jerry, the problem is that no listening test has ever been passed.
What I find curious is that the believers sit around and throw rocks at anyone who disagrees with their opinion.
I cannot think of a single believer who actually put himself to the test to prove what they assert. And it's a simple matter, really. Identify cables - or simply the sounds they make - while not knowing which cable they're listening to.
But not one has tried.
I've measured cables, and many skeptics have performed tests. Funny thing is that I'm pretty sure that skeptics would change their position if they found a shred of evidence. I sure would. And then I'd use whatever I found to start selling cables. The profits are terrific, I just have a problem with the dishonesty of claiming what cannot be demonstrated. But if I could demonstrate something, hey, that crow would be delicious considering margins in the cable industry.
Back to the initial point, I think that believers are afraid of what they'll find. They know very well that all tests have failed. Deep down, they probably suspect that they've been cheated. If there really was something there, it would have been teased out through measurements or listening tests.