Methinks you have too much faith in humanity, SH. The thing is, actually in almost any other domain, there _are_ people who think they're seeing/hearing/feeling something that can't be measured by any instruments and/or that there is some conspiracy that makes some people say otherwise.
E.g., you can work your mouth till you lose your voice to convince an "audiophile" that his 500$ power cable or wooden volume knob (!!!) doesn't produce any measurable difference in the signal, and even prove that no "audiophile" hears it in a double blind test, but they'll still think they hear a fuller and more nuanced sound.
Pretty much the funniest was a dude on a site that had gotten into his head that, basically, let's put it like this: hard drives store things magnetically, right? They have a magnetic coating and a head and generally are kinda like using the same principle as a cassette, right? And on cassettes different coatings had different frequency response, right? Like, you had iron, chrome, and whatnot, and some were better for higher frequencies, others for bass and so on. So it stood to reason to this particular gentleman that playing the same MP3 off different hard drives would sound differently. And he even convinced himself that his educated audiophile ear actually does hear something that he never had until that thought hit him.
No amount of reasoning moved that guy, lemme tell you.
Ditto for almost anything else. Miracle additives for cars, 4" exhaust pipes on 1.1l/1100cc cars that claim to add 100bhp to the power, quantum chi crystals, woowoo power-of-magic-thinking books, etc. There are people who'll swear by them without and often in spite of evidence. And I'm pretty sure that a lot of those take it as a conspiracy if their government stops one of those snake oil vendors from making bogus claims. E.g., it's just the petroleum cartel that tries to hush the miracle fuel additive which would make you buy less of their gasoline, see?
