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They do believe in "teeth" in the old manuals but all the m'scope shots don't support this in the finished product. It is more a slightly wavy line.

It may just be semantics how we describe it...

Yeah some guy called Gillette. :p
I believe the coating is a compensation for a less than perfect edge. You can get closer to perfect by hone & strop if you have the skills.

'Mostly' all blades can be 'equalised' for sharp but not for smooth or durability. The other factors you mention do play a role.

You can't simply blame a honing medium for irritation. There are other contributing factors, razor , skin, honing skill, etc..

I'm not clear about the word "jagged". Almost sounds like stropping is undesirable ?

Also , the reason Jnats appear to give striae free finishes is by their virtue of causing various sized striae that are not angular.
It's a natural, right ? The grit is not 100% even.

That nice...

That's interesting. I wonder if he took the edge beyond it's optimum ie it started to degrade & roughen up a little.
Personally I think exfoliation is great as long as no blood is involved . :)

:roflmao I toldja to stay off eBay.

Don't have an Electron Microscope Jimmy ? ;)

IIRC, Verhoeven measured straight razor edges at 0.35-0.45 microns across.