[kgarten]

So I don't know what you are arguing: We have a lot of evidence on the effectiveness of masks in relationship to preventing droplet infection.

We don't have so much about COVID 19. On the community level it looks promising for me, the papers are flawed but coming out.

What I am missing ... where is the other side of the coin. All models are wrong but some are useful. The particle simulations are wrong, but pretty useful (and I don't see why COVID should behave differently). What model do you base your assumption that masks don't work? Is there research that supports your claims? All science is bad science :) Some is useful.

> survey responses (= bad data)? So any research based on survey responses is bad? It's a standard method in policy research. What data would you use to show the community effect of mask wearing?

I'm usually listening critically to experts in a field (not to dentists or surgeons), it seems people who claim masks don't work are not virologists and have not worked with the virus (COVID19): https://en.wikipedia.org/wiki/Christian_Drosten https://en.wikipedia.org/wiki/Sandra_Ciesek

Both strong in the pro mask camp. Are there virologists working on COVID 19 (in the lab) that are on your side of the argument?