I just seem to get the sense that this issue has been studied far beyond that. Maybe its just me reading studies about masks and covid19 as much as I have, I think the reasoning is like I said, when you weigh the costs and benefits, the potential benefits of universal mask wearing just outweighs the cost.
So what I think has been done is to study the possibility of benefits to mask wearing in the case of covid19, and I gotta tell you, I'm not getting all this uncertainty about effectiveness from my reading compared to what I sense you are getting. I'm not saying that more tests aren't interesting, I'm saying that in my opinion, the guys who know about infectious disease have pretty much already returned a pretty darn good case.
Now I know, all hail Gail Shaw for the "scientific method" thing. There is no doubt that the scientific method works when it works. The thing is, the threadisens of the world now seem to think that if you cannot apply the scientific method to a problem, then the problem cannot be addressed.
What I think has happened with masks is that its been studied to pieces but apparently not to some absurd threshold that some folks feel it needs to be. Nothing short of a suitable sample size to be sprayed with inoculum is going to be good enough, especially with how this has been politicized, folks who cannot bear this loss of freedom have no end of friendly sources of "information" that they can use to validate their views.
Heck when it comes down to masks, I don't even think its the discomfort or inconvenience, I think its because of again, politics.
Now I gotta tell you, I think other folks have a point. SSC has a hard time with subjective topics like politics. The trouble is, we have folks that will turn anything into politics, including face masks, these folks are encroaching on all areas of science and I'm not so sure that their resumes are up to the task. So this also means for me that science should be a little off topic here too, because I have a feeling that this site isn't up to it.
I gotta tell you, I've always been offended by bad science. So how about along with the prohibition on politics, we consider one on science too? Hey, I'm just asking 🙂