Who is to say that confirmation bias is not at work either? Someone spends $500 on a cable because they believe it will enhance the sonic performance of their system is going to be psychologically pre-disposed to hearing it. There is no way around that. How much so is up for debate?
>>>>The arguments regarding confirmation bias, placebo effect and other psychological phenomena are the “weapons of mass destruction” of died-in-the-wool pseudo skeptics. No one is saying psychological issues never occur, but they don’t always occur. They can be controlled through careful testing by skilled listeners, I.e., audiophiles. It might not be easy. I never promised you a rose garden. 🌹Therefore, that particular argument is a logical fallacy. 😢 By the way, you could make your argument a whole lot stronger and more believable by other undecideds and newbies if you used $5000 instead of $500. 😬