How is mask effectiveness still a debate five months into this pandemic? Do we really have no credible data correlating mask use and spread of coronavirus? Here I only care about real world curve-bending, not lab experiments. The lab stuff is nearly all bullshit like this one.https://twitter.com/AlexBerenson/status/1293669103241224197 …
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Wouldn’t this line of reasoning lead to stalemate? You can’t know what the opposite result is to the approach you’ve taken.
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No - because there is a subset of masks that we can be confident will work.
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