The "most foolish" loudspeaker tweak/upgrade ... is

1) twisting makes a difference.

2) the same twist tightness throughout the entire length of the cable is retarded.  You want a tighter twist on one end than the other.

3) the higher end your system is, the more these minor tweaks are audible. I've got a reference system and I can hear the difference my cable risers make. I could not on a cheaper one.

...nothing draws a crowd like a crowd. ;)

I think I'll just sit over here and watch the floor show.....

Someone should really cater these events. ;)

ptss, that explanation adds much to the discussion; thank you!

@fliz That being true, is it regulated by price? All things being equal (materials, configuration, etc) at what price point do you reach diminishing return? Does this mean the more expensive the produce, the better?

(Caveat: these questions overlook the actions of your typical audiophile with a large budget.)

The concept of twisted pair is nothing new, it's been known sonce the days of the telegraph, I.e., number of twists per inch depending on the frequency or gauss of the magnetic field or EMF. Basic stuff I learned in college all those years ago. Audio cable makers didn't invent this idea or discover it. it certainly doesn't add any cost to making cables.