More and more it looks like the “Don’t wear masks!” message from various officials early on was a catastrophic error. @zeynep was right from the beginning, it seems, and a whole lot of purported experts were wrong.
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Some calibration is in order. First, this is a correlative comparison, which by its nature is always weaker than the gold standard of an RCT. Second, there is little to no harm in masking (contra HCQ). Third, an RCT would likely violate ethical norms & be disapproved by an IRB.
End of conversation
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