Those who think that blind tests are worthwhile, cite probably what blockader said as reasons for this. Others, who dispute the value of blind tests, see many problems involved which can compromise the results :
We listen to an unknown system, in an unknown room, music that is mostly not of our choice, we have limited time to listen, we have no chance to relax, we are constantly under stress, our attention fades very quickly, there are a bunch of people around and it bothers us...
It all look like a general mess.
Personally I don't know anyone, and I know a lot of people from the hifi world, who ever participated in some seriously organized blind test. So I would like to hear from at least someone who really participated in it, how he was satisfied, what he gained.
Dernie and gesture said something interesting, but is it really necessary to do a blind test in that cases? An ordinary test can usualy reveal whether or not there are differencies. That is easy part.
The hard part is to decide are these differencies important enough to us , so to buy a product.