> There’s a LOT of evidence that masks reduce COVID spread. What there isn’t, is conclusive evidence that lets us say with a 95% degree of probability that mask

> There’s a LOT of evidence that masks reduce COVID spread. What there isn’t, is conclusive evidence that lets us say with a 95% degree of probability that masks work. Or carefully designed scientific studies that prove this. Well, if we take the view that evidence doesn't require scientific studies then it is just your bullshit vs my bullshit. You say different levels of Covid hospitalizations in districts with mask mandates vs districts without. I say confounding factors. I say the U.S. has high levels of mask use yet still high levels of Covid spread. You say confounding factors. Etc. The entire IT industry is a great example because there is a massive amount of bullshit, cargo culture, and magic silver bullets that doesn't really work in it.