I think this whole thread is a bit silly, but hey, it sucked me in, so whadoeyeno?
Regardless, I have two peripherally related comments:
i) The more one understands about psychoascoustics -- about how the brain perceives audio -- the more obvious it becomes that double-blind tests are not a gold standard for evaluating audio equipment. Hearing is not vision -- one integrates anomalies, the other differentiates; and if youplay the same passage multiple times you can hear different details with eacy playing, regardless of the signal chain. There’s a reason why professional listeners -- guys like the Stereophile & TAS reviewers -- generally use a different methodology.
ii) "Snake Oil" actually had real health benefits. It was a good source of Omega-3 fatty acids, possibly the earliest effective (if inadvertent) prophylactic targeting cardiovascular disease. The term only became pejorative when the market began to be flooded with "fake" snake oil, that pretended to be the real thing. Badaboom. Now you know. Charaterizing something as "true" snake oil should be a compliment.