Neutral electronics are a farce...

OK, let’s review the bidding.

The audio signal is not the same thing as charge.

The electrons in the conductor move very slowly.

The audio signal moves VERY rapidly. It moves at near light speed in a conductor.

What do we know of that can move at light speed in a vacuum and near light speed in a conductor? An electromagnetic wave. But an electromagnetic wave is not nothing. It must be made of something. We already know it’s not made of electrons since electrons don’t move very fast at all, a centimeter per minute or whatever. What else could it possibly be? Well, for one thing we know that ALL electromagnetic waves, including light (both visible and invisible), radio frequencies of all types, x-rays, gamma rays, and Extremely Low Frequency waves travel at light speed and must be made of SOMETHING. They can’t be made of nothing, right? Well, here we come to the grand finale. The only thing we know of that travels at light speed and near light speed depending on medium is drum roll, please.....photons! And the reason photons can travel at the speed of light is they have no mass, as you yourself pointed out. If a particle has mass it can never attain light speed.

So, the audio signal, the one that’s traveling at light speed is made of photons.

Geof by your logic then photons are how a NEwton's Cradle works too.   They never taught us that in physics class!  You should write a book!

https://en.wikipedia.org/wiki/Newton's_cradle

Electrons  and teh signal in the wires do seem to work just like a Newton's Cradle.

Geoff your logic is fine.  Problem is it is based on missing facts.   Logic is pretty useless based on missing or incorrect facts.   Write your book and fill us all in.   Or save time and just publish  a link to the proper reference. 

Or if you really don't know don't act like you do.

Virtual photons

Turns out signals in cables don't travel at the speed of light anyway:
https://en.wikipedia.org/wiki/Velocity_factor

It would appear that Geoff has opened a new branch of physics.

If you can slow down photons to the degree upon which he insists then its not necessary to get something going at the *full* speed of light to actually *go* the speed of light :) Doesn't it sound like that could have some impact on space travel?

Atmosphere, there you go again, putting words in my mouth. I never said they did travel at the speed of light in cables. Actually I went out of my way to explain the difference between the speed of an EM wave in a vacuum and one in cables. You might not remember that Einstein found the speed of light was constant - in a vacuum. I hate to judge before all the facts are in but I’m beginning to suspect your reading comprehension skill is quite possibly as rusty as your physics.