By the way because i dont buy any tweaks...then i do not sell anything and i had nothing to prove to you or to anybody ...
Because i tuned my room/speakers relation in an incremental long process, if i never used DOUBLE blind test in an objective environment for sure, for the period of one year full time when i worked on my acoustics i used simple blind test systematically each week voluntarily or unvoluntarily ... For example pieces of shielding materials i designed to protect my central electrical panel fall on the floor unbeknowst to me etc ... I used others devices for which as anybody who use them a blind test is not only fun but necessary by the way ... The goal is not debunking but refining the number of devices and their location effectivity etc ...
Your repeated insistence on DOUBLE blind test for others is very revelatory of your understanding and attitude ...
A marketing company must use this DOUBLE blind testing because they need statistical results , simple blind test in an incremental designing process as in my room acoustics is also rational; but asking others to be double blind tested to debunk them is children play ... Have fun ...
Scepticism is defined by 5 modalities and levels of experience in history of philosophy ...It is way more than a method of debunking ...
James Randi was running a business of his own it was never about science ...I am not a disciple of this showman...
I read not only about mathematics but mystics by the way ... 😊
Did you know that the founder of all modern mathematics was a christian mystic ? ( it was in fact three christian mystics separated in time and disciple of one another the last is Georg Cantor ) i bet you did not know that Cantor was a mystic who taught theology and use the three methods of Dyonisos to create set theory limitation of size principle before the axiomatization and use the intuition of the mystic mathematician bishop Nicolaus of Cues about the absolute and relative infinite to create set theory ... ... He was difficult to debunk trust me ... No one succceeded yet ...
“Double blind test are not practical for everybody in his OWN room with his OWN gear and his OWN listenings habits ..”
I understand the practicalities of it. I actually do them. My brother had a great saying. “You don’t have to cut yourself to know you bleed.” You don’t have to do your own DBTs when they have already been done over and over and over again with the same results. You acceptedthe results from the one study you cited that used DBTs. Why would you not accept the results of the multitude of tests debunking cables, power cords and other such tweaks? And as for practicalities, it’s not really so impractical that one can’t do them. I somehow manage on a fairly regular basis