Blind test are valid in their SHORT range of applications,
small changes difficult to detect or statistical needs to erase human choices in medical research for example,
BUT they are no more valid to decide if the feeling for a stradivarius is ONLY AND MAINLY a BIAS not founded on a real quality herited and learned through history, but instead an arbitrary fad which the test is supposed to reveal....
The reason for that are touch upon in the pots of frogman, i will not repeat that...
Biases are universal and in all human choices, nobody could question that in his sane mind...
The use of blind test to PROVE that all biases, or preferences are purely arbirary, or deceptive is a use of blind test OUT of their normal range of useful application for the need of an "ideological" perspective, itself an unconscious bias....