Speaker cable arrows???

Mr. Geoffkait, I don't think it best to quote HowItWorks articles that poorly quote Wikipedia. The result can be less than coherent. Take this sentence,

The voice coil's electromagnet is placed within a permanent magnetic field. The two magnets interact, and every time the electromagnet's polarity changes, the interaction between the magnets changes.

The voice-coil is the electromagnetic, and the voice-coil's magnetic field interacts with the permanent magnet field. Perhaps that is what they meant, but you get the impression they didn't really understand it.

The signal energy travels down the cables in one direction >>>> from the source to the load, (amp to speakers), in the form of an electromagnetic wave.

That is not really true and is shown not to be true with a simple case, a DC voltage and a load. There is no continuous electromagnetic wave to transfer energy. What there is is an electromagnetic field that cause electron movement with causes a magnetic field. The product of those two (power) always points to the load which is the direction of power transfer.

In a transmission line, the changing e-field causes electrons to move which propagates down the cable as an electromagnetic wave, but technically, other than losses, no work is done. The "wave" sets up the fields, but does not define the transfer of energy  ... at least using classical EM theory.

Glubson, did you take a smart pill placebo? 

It is the current in the coil that produces the magnetic field.  Also, recall thread concerns directionality.

If it sounds better it matters. I have arrows on my cables. I run them source(pre) to input (amp).
also dac (source) to pre (input). I haven’t tried them in reverse because they sound so sweet. 

geoffkait,

"Glubson, did you take a smart pill placebo?"

I, in fact, noticed and explained those teeth on April 22. I told you that you will get it a few weeks later.

Anyway, so you have something to reveal to your readership in a month or so. The secret in those teeth amplitudes increasing recently is in reporting logistics and death distribution. New York State has a very well organized system, augmented during recent circumstances. Many other states do not have it organized that well in real time so you get dips during the weekend. When proportion of deaths in New York was overwhelming, delays in reporting from other states were much less prominent. Once proportion of New York state deaths decreased, imperfections in reporting dilligence in other states became more visible.

You are welcome.