Virus/Viron= .1 Micron
Mask filters out up to 20 microns at best
That’s funny.
Your analogy is wrong. You left out the layers of fence, the 100 mph winds and the turbulence around the fence material. The slight breeze through a mask scales to 100 mph at the size of the virus.
And with all of that viruses get through easily. And everyone knows that. Masks are used to stop droplets, not virus particles. They don't do a very good job, but in some cases they are better than nothing.
Pure propaganda. You will NEVER, EVER have a bare naked viral particle floating around. EVERY particle that is generated in airborne form by the human body starts out as an aqueous saline droplet far larger than 0.1 micron. Even if all water evaporates, the particle is still a salt/organic solid, again far larger than 0.1 micron.
“...looming conflict between those who advocate wearing masks to protect themselves from the Wuhan virus”
To protect themselves? Only the N95 can marginally do that. The surgical masks on down to hankies can only marginally protect others from the wearers. Is that so effen difficult to understand? Apparently it is.