Two questions to make you mad.

What you fail to understand is that " accurate" in an acoustic perceived experience way cannot always be reduced to "accurate" in an electrical way by a limited set of electrical parameters among all possible ...

Human ears are trained by evolution to identify some qualities relating to timbre experience be it speech recognition or natural sounds, or musical one etc , This timbre experience acoustic qualities may be related in some case to the various parameters and material composition belonging or beside or near the vibrating resonant source and affecting it ...

Very simple experiment :

Put a big chunk of shungite on an amplifier...

Or try a big chunk of quartz...

Then try it many times and you will feel the difference with a music piece ...

Even if your electrical measures tool set will not detect any change in the amplifier specs you will hear a more compressed sound or a more meaty one with the shungite chunk and a more "clear" or less compressed or more high frequencies oriented sound with the quartz ...This is caused by the very different composition of these minerals affecting the playback system in such a way as impeding or improving the soundfield and timbre experience for the EARS/brain not for your measuring electrical tools... 😊

The fact that shungite work always in his way and the quartz work in his own opposite  way is an OBJECTIVE fact...

If these AC cables did make the usable signal more accurate don’t you think they would use them?

@donavabdear The ASML system must be accurate and precise. There is far more complexity involved in that machine that has nothing to do with cables.  Semiconductor fabrication does not hinge on cables as you want to argue.  Intel production problems had nothing to do with the type of AC cable in use.  Sorry, your premise is totally lacking in substance to provide any value to the audio hobby. 

@texbychoice 
Ok you win fancy AC cables have nothing to do with accuracy in an electronic signal. 
 

@donavabdear Really?  Your agenda is revealed.  Paint a completely ridiculous scenario with no connection to audio so you can then justify a conclusion based on nothing factual.  You want to discuss the merits of various cables used in the audio hobby, do so in a honest manner.     

@texbychoice 
When you have a logic problem you extrapolate and extend the terms, you do this in math and physics all the time to see if your idea is valid logically. I'll take the extended criteria down a little. The standard piece of test equipment in the audio industry is the -Audio Precision Analyzer- it comes with a regular AC cable. If you get higher accuracy in the playback of audio equipment why doesn't a 30k $ audio tester use a fancy expensive AC cable like we use as audiophiles. Hope this is clear.

BTW I've spend about 30k $ in my listening system alone on power and power cables I feel I paid enough to have an opinion.