Why do healthcare authorities in the west insist masks don't work when the available evidence suggest they in fact do? I assumed it was to stop people from hoarding masks that should go to healthcare workers but Scott Alexander has another explanation https://slatestarcodex.com/2020/03/23/face-masks-much-more-than-you-wanted-to-know/ …
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What’s his excuse in tl;dr form?
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"Not recommended" is the medical equivalent of criminal "not guilty" - they got to that because the evidence is inconclusive because people don't actually wear masks randomly (diligent mask wearers are diligent and so do everything with more diligence) even if assigned to do so.
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