He's full of s#!t. It's less effective than a surgical or n95 mask; but still filters a non-zero % of droplets (I've seen even as high as north of 50% in studies). It also disrupts flow, so when you cough, sneeze or talk, droplets don't fly 60 f#&%ing feet across the room.
In deed this is true. But large gobs of spit is not the problem. It is the tiny particles exhaled or inhaled that are the issue. Ive read the 2% effectiveness from numerous medical sources. Fauci himself said as much back in March. They are better than nothing but not much. Its too late imo.
There's dozens of other countries that have controlled the virus, so other solutions absolutely work.
One final point. It so happens I do wear a mask whenever I go out here in NY state. Not because I think it works. But because our elected leaders mandate it. I and about 1/4th of my fellow citizens.
With you (and all sane people) on the mask thing. But why exactly do you say there is no evidence hers immunity will ‘work’?
So why is the entire world busy developing a vaccine? A vaccine is intended to speed up herd immunity. If there is no immune response, there is no chance that a vaccine can even work.
Because there hasn't been enough research done on people who have had covid-19 yet.
Two things; 1. droplets are larger when they leave the mouth; hence the mask isn't for me, its for you. Once the droplet is in the air, it's smaller, why everyone should wear them. 2. I've never seen a number as low as 2%. I get that different studies say different things. Heres a great resource for you comparing different materials. In this study cotton is north of 50% effective at filtering droplets of a certain size (6 micrometers, which is a fairly small droplet size). I've even read from Johns Hopkins that at the smallest droplet size, cloth masks are 20% effective (vs 95% wearing an n95) - but even then that's 10x better than the 2% you're quoting.