SoCal Sam
Lunatic Member
None of what is provable?
Note that true proof is only found in mathematics; everything else is a matter of evidence.
Study of senses and behaviour rarely makes reference to subjective experience, which is unreliable, unquantifiable, untestable, and -- other perhaps satisfying anecdotal curiosity -- is of little scientific interest. Instead, experiments are devised to treat acts of sensing as objective, observable, testable, and measurable/quantifiable phenomena that provide evidence for or against hypotheses. For example, my hypothesis might be that listeners can perceive differences in speaker cables.
If we wished to find evidence for (or against) listeners being able to perceive differences in speaker cables, we wouldn't simply switch cables and ask the subject what he hears. That's subjective and subject to conflation with cognition, experimenter bias, expectation bias, etc. Instead, we set up a double-blind experiment to sometimes switch speaker cables and sometimes not -- without experimenter or subject knowing whether cables are switch or not -- and then have subjects indicate whether they believe the cable was switched or not over multiple trials and, ideally, under a variety of conditions. If subjects report a difference in sound when the cable is switched at a rate above chance, then that provides evidence that listeners can perceive differences in speaker cables.
Done with appropriate rigour, it is repeatable, reliable, and statistically allows for variability and fallibility, in precisely the same manner and to the same degree as every other natural science, including chemistry and experimental physics.
Whilst it doesn't deliver provable results in the mathematical sense, no experimental science can deliver proof, it can only provide evidence for or against hypotheses.
Existentialism is the fallibility of the senses which calls into question any behavioral study based on perception. While trends can be identified and applied in a useful manner, there are always enough exceptions to the rule to deny the absolute status that is needed to elevate the result to scientific. In a sound quality test, the tester must rely on what the subject is saying because the tester has no way of independently verifying the subject's impression. It is physically impossible to perceive through the subject's senses, the subject could be embellishing or even lying. Even if the subject is sincere, the subject may be fooled or mislead by his own senses, the acuity of which is as infinitely variable as people are. That's not good enough to call trends identified in a listening test a scientific result.


