The only thing that is real is what you experience.
When you start off from a flawed premise, everything that follows is nonsense.
First off, what each of us experiences may indeed be considered to be real - although to say that runs together (at least) two meanings of "real." A person laboring under a delusion is in that moment out of touch with reality. Their experience is still a real experience of course - but crucially,
what they feel themselves to be experiencing or what they claimed to experience, is not necessarily real in the objective sense. For example, someone who claims to have experienced a UFO sighting no doubt experienced something, and to that extent their experience was real. But that does not, by itself, give them license to claim with impunity that what they experienced was a UFO sighting. Nor does it give them or anyone else license to claim that it's 50-50 whether or not they saw a UFO - or, in the most fatuous variant that you have embraced here, to say, "well, you can't prove they didn't see a UFO."
Second - and far more egregiously - experience is not the
only thing that's real, and you know it, because it's not how you operate. If you did not think there was any objective reality to experience outside of yourself, then you could not rationally market your amp mods because there would be radical uncertainty about whether anyone else ever would hear the differences you claim to hear. You clearly and evidently are convinced that there is an objective, independent reality to the effects your mods make. (And just because not everyone will hear or claim to hear those differences, does not mean you don't believe those differences exist - as evidenced by your own statements.)
And third, all of us, including you, go through our daily lives totally and utterly reliant on the reality of objects, organisms, structures, and phenomena that we do not experience in any direct or personal way. We could hardly exist otherwise.
You have no proof that subjective listening is false.......and you have no proof that objective tests are true. You just have an opinion. ... The only people who know anything about how something sounds are those that actually use their ears........this is direct experience.
If there is no proof that subjective listening is false (putting aside for the moment that this is a misleading, gross caricature of what folks here actually believe), then you cannot claim that "actually using your ears" tells us anything, let alone that it's the only thing. See? All that flows from a nonsensical first principle is more nonsense.
if you keep your head in the sand then all you will know is sand.
Very true - and your perspective depends precisely on that: hyper-subjective, "no measurements" audiophilia is based precisely on the artificial creation of uncertainty and "could be true" by the willful ignorance of a significant fraction of what humanity already knows about audio. No one can take your mods seriously if they don't keep their head in the sand.
I have nothing more to say about this.
Promise?