Quick power cord question:

The same applies to the idea that wire is directional and needs to be "broken-in" by use! Flat Earth science!

And you expect me to believe that your $300 DIY power cord sounds different ("better") than my $90 Pangea (yes, I bought one to try out) - let alone a $6 Home Depot AC cord? 

Hmm,
"Connecting a battery to an insulation material (dielectric) - NOTHING happens! That is the nature of an insulator! "
 
Soo, "YOU", noticed not a thing eh? 
And you were, actively/passively measuring exactly "what", at the time in question? With what gear? In what frame of reference? Scale? Calibrated for? With all data recorded, verified and then crosschecked how and by what and/or whom?

Oh yeah, What was the question with which you were posing to begin with?
 
They still say "Ignorance is _____"
  For a ______!

As I mentioned, NO ONE is connecting batteries to insulators/dielectrics.     BUT- the extreme density of some will preclude any facts from absorption.     Of course, with no other uninformed comebacks, they'll just change the subject.      Anyone interested in actually learning something about dielectrics, can simply do a Google search on DIELECTRIC POLARIZATION.       Please note that all audio cables will register a capacitance, inductance and resistance when measured.      Whether one chooses to believe any of that matters, as regards sound quality, is moot.     The fact is; audio cables with dielectrics will have capacitance, and their dielectrics become polarized in the presence of an electric field.