Francisco
Would you agree however that there just could be more science when one person switches fuses and/or direction and the other person listens blindly than when one person does it sighted
Steve,
Consider your system. It will take some warm-up time to reach full quality and I can easily guess that this effect will be larger than switching the fuse. Any switching will take a long time to reach stable conditions and probably you and your poor fellow will be tired before reaching any conclusion. The alternative way - you can take a few days with each type of fuse, take your notes and after one month reach a conclusion. I am prepared to accept that this is the good method, but are you wanting to do the experiment?
My point does not apply only to fuses, it applies for the high-end reviewing in general. There are many issues - I am prepared to debate them. But I can not, no one dares to suggest a possible scenario with detail. Do you know how many times you have to carry a blind test to have a reliable statistic? Science does not accept statically invalid results.