No, actually, there's still no data that mask mandates work. You can simply look at case graphs for different countries, and try to figure out when mandates wer

No, actually, there's still no data that mask mandates work. You can simply look at case graphs for different countries, and try to figure out when mandates were added or removed. It can't be done, although introducing changes to the case curves big enough to notice was the only justification for the policy. Given the short serial interval any mandates should have made a clear and obvious impact on case numbers within days, but that never happened. "we have to spend a year doing studies to figure out what a little back-of-the-napkin risk analysis shows" Both risk analysis and the studies proved wrong. The real world data is the ground truth here, because that's what the policies were designed to affect.