Ian, so lets do it another way then, taking the information which is known, ie cap/int/resistance/dielectric strength, and then forumulate a brew based on the best possible components you have available to you, and using top construction tecniquies, would you then sell it un listened to?
The final testing is purely arual, it proves nothing other than the sound is passed our most stringent test. Tim's & yours truelys lug holes.
I offered no proof at all in the earlier post, just possible reasons why, It's not written in stone.
And I'm not trying to justify anything, when we do tests, we use a know reference, and make notes regarding each cable we compare against, how we arrive at the cable construction is our thang man.
So what you want me to say is that cable 'a' is different to cable 'b' because we changed the dielectric from pvc foam to air, or we used 3 layers to shielding which caused the sound to do 'x' over the previous version with only 2 in, a 100% surefire fashion.
Aint gunna happen mate, ever see Coke giving out the recipe ?, or Kentucky telling you their special greese formula 
"The first person to prove they can consistently identify differences between electrically identical cables will be a huge audio celebrity, free to cherry-pick any equipment they like in exchange for their endorsement. Come on, why aren't any of you up for that, then?"
Well you can give a go if you like Ian, and then tell us all
