Proof of placebo effect ?

[Rockwell]

Rockwell, you are offering a theory as proof. It is an interesting theory, but we also might consider other theories, such as those that question the testing. I'm not a big fan of the placebo effect in general, believing that far too much is attributed to it both in medicine and audio.

I am not so sure that placebo effect really needs to be proven and I don't think I was trying to really offer proof either but, that example test seems pretty clear cut. If you change none of the variables except what wire you tell the listeners is connected, then whatever positive results are offered must be attributed to what the listener expects from the respective cable, not the sound. This would establish that the placebo effect is real and how easy it is to hear results when none exist. Do you agree?