> The vast majority of postmortems I read of COVID assume knowledge today was avaialble then Eh? I remember vividly thinking about a month or so into the first

> The vast majority of postmortems I read of COVID assume knowledge today was avaialble then Eh? I remember vividly thinking about a month or so into the first lockdown in the UK that we need to open up now. Sure, we didn't know immediately before we even did anything, but after March/April/May we had very solid statistical data. We have different approaches _even now_. That's not based on a lack of data, it's based on different value systems. Japan, Taiwan, obviously China etc are all still gung-ho on masks (and from what I can tell parts of the US are as well - super weird watching videos of conferences).