Example of how the purpose of masks for ordinary people is still not understood. The ones with exhalation valves, including N95s, should not be worn around people, period. Not just in sterile hospital operating rooms as NYT claims. Cotton mask>valved N95.https://www.nytimes.com/interactive/2020/health/coronavirus-best-face-masks.html …
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Agreed. Telling people not to use them is bad advice. Cover the valve is good advice.https://twitter.com/AeonCoin/status/1251196873613946881 …
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Only if you ignore opportunity costs. Game theory says we all experience better outcomes if we collaborate so why are you being resistant to that?
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