Directionality Explained

Are there machines that sense bloviation?

"Are there machines that sense bloviation?"

Man-Machine.

So you make your audio system decisions based on others' test results? That must really limit your choices!

 Not really there's a lot of components that's been tested. Wires I'm like most people, a subjectivist,  if I don't hear a difference then I don't waste money on it. 

He's on a directional streak.  Somebody needs to flip the direction to slow him down :-)

Directionality.
Yes cabling, "All" is directional "to a point",
 from the time the wire itself is first drawn. "It has a polarity", and that is the beginning. Regardless of the process used to draw the wire or the metallurgy involved. In a way, "Many ways in fact". None of that matters when it comes to this concept.
I am not going to begin a treatise here on the interactions "At the subatomic level", of particles and their interactions with other fields, particles and other phenomenon. OR, the field/polarity and wave interaction theories and such. But if you really wish to know the reasoning and means for understanding this concept of, "Directionality". You can look there for a start and see where it takes you..
Proof? We have math. AND your ears. That's it at this point.
But then, All Newton had was a bruised apple.
Personally, I think it is all the fault of a one Mr. "Higgs Boson" myself.
But that's just me!