It's quite simple. Face coverings stop what you exhale from dispersing as far and masks rated to filter out particles the size of covid-19 do indeed work and filter out those particles. Plus, like you mentioned, people wear masks for dust/sand and they also wear them for allergies or for chemicals/gasses/fumes. I don't see why people would claim "they don't work".
How so? Are you claiming stuff designed to stop the large spread of particles that you inhale or exhale or completely stop small particles that you inhale or exhale don't do so?
You can't just say "masks work". Work for what purpose and to what degree? To avoid specifics is to avoid the problem we currently face, which is that we simply do not have a robust body of research around the efficacy of the different types of face coverings in different situations.
No, you aren't being specific. What is the efficacy of a cloth face covering in a retail setting in terms of lowering transmission rates? You don't know, because the research isn't there to tell you with any sort of accuracy. "It just works" isn't solid ground for macro level policy, and sure isn't a proper basis for a lot of the sweeping declarations we are seeing in society right now.
If you look at the dispersal videos or how far what you exhale travels when you're covering your nose and mouth you'll clearly see how much it helps. Sure, more studying is always a plus, but how we inhale and exhale particles and how masks work have been known for hundreds of years. It's basic stuff I learned in school. I actually was wearing masks before the chink flu for allergies, have worn them to protect from paint fumes and was planning on getting a gas mask for dust storms (to protect against valley fever, which is a smaller particle, that is before they went from $100 to $300 due to their effectiveness in stopping the chink flu).
Edit: Sure, I don't know the exact % of how much simple cloth masks protect others or yourself, but logic dictates it's more than not wearing anything at all.
It's quite simple. Face coverings stop what you exhale from dispersing as far and masks rated to filter out particles the size of covid-19 do indeed work and filter out those particles. Plus, like you mentioned, people wear masks for dust/sand and they also wear them for allergies or for chemicals/gasses/fumes. I don't see why people would claim "they don't work".
User name checks out
Care to elaborate on what you meant or are you just trying to fit in with the other crickets?
Your username, seperatedFromReality, accurately reflects you mental stat with regard mask wearing.
How so? Are you claiming stuff designed to stop the large spread of particles that you inhale or exhale or completely stop small particles that you inhale or exhale don't do so?
You can't just say "masks work". Work for what purpose and to what degree? To avoid specifics is to avoid the problem we currently face, which is that we simply do not have a robust body of research around the efficacy of the different types of face coverings in different situations.
To be specific, cloth coverings stop the particles you exhale to disperse as far and filter out a little bit of the larger particles.
Those blue strap on doctor's masks stop some larger particles and some bacteria along with a little bit of the larger virus particles.
Allergy masks stop the larger allergen particles.
Respirators and N95 rated masks stop chemicals, gasses, pesticides and the smaller virii particles.
Full face gas masks stop 99.9% of airborne particles, gasses, chemicals, etc ...
So yeah, masks do "just work". They are designed for a reason. If they didn't do anything at all they wouldn't exist. Sort of like walls.
No, you aren't being specific. What is the efficacy of a cloth face covering in a retail setting in terms of lowering transmission rates? You don't know, because the research isn't there to tell you with any sort of accuracy. "It just works" isn't solid ground for macro level policy, and sure isn't a proper basis for a lot of the sweeping declarations we are seeing in society right now.
If you look at the dispersal videos or how far what you exhale travels when you're covering your nose and mouth you'll clearly see how much it helps. Sure, more studying is always a plus, but how we inhale and exhale particles and how masks work have been known for hundreds of years. It's basic stuff I learned in school. I actually was wearing masks before the chink flu for allergies, have worn them to protect from paint fumes and was planning on getting a gas mask for dust storms (to protect against valley fever, which is a smaller particle, that is before they went from $100 to $300 due to their effectiveness in stopping the chink flu).
Edit: Sure, I don't know the exact % of how much simple cloth masks protect others or yourself, but logic dictates it's more than not wearing anything at all.