DBT is very simply, and tells us clearly what machines have been telling us for a very long time, without a bias and preconceived notion, a human can not identify which cable they are listening to, or even come close.
So DBT clearly states that people are a victim of their own minds, not that our ears can pick up this magical change that the machines can't.
This magical change has names, and it is bias, expectation, pre conceived notion, placebo effect etc etc... it is nothing that an untrained ear cannot hear, or something that requires experience.
It is simply a state of mind and set of beliefs that are totally unrelated to the reality of our world.
to think otherwise is foolish, even if there is the absolute smallest chance that cable believers are right.