Quote: The issue at hand is a matter of burden of proof, electrical laws have been proven beyond the shadow of a doubt countless of times in all engineering domains, acoustic thresholds have been studied very seriously by various institutions (medical universities, the AES, hundreds of PhD theses...), the body of evidence is quite (very) large. Likewise, the evidence regarding placebo effects and bias is there (people getting high with sugar water in a cocaine DBT for example). Outright dismissing subjective evidence isn't very scientific, as isn't outright dismissing a circuits designer's 'new and non measurement based' approach to accuracy, but considering the existing body of evidence it's up to them to make a substantiated claim for their subjective experience or design. If you are making an extraordinary claim that goes against the body of evidence, prove it, in multiple ways if possible. The usual way people are asked to prove their subjective experience is blind testing. well documented measurements is possible too, it's then necessary to confront those measurements to the known acoustic thresholds. If the claim is that the current set of measurements is incomplete or not appropriate for auditory impressions, the designer making the claim should come up with a new measurement, after all what can be heard, can be measured, it's only a matter of finding the criterion.