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When people insist that you need an N95 respirator with an absolutely perfect seal on the face in order for mask-wearing to be any use at all, I wonder how they're squaring that with an R0 of 2-4
If this thing were so transmissible that you'd need to dress for a moonwalk to avoid it under typical social conditions, it would have moved through the population a lot faster prior to the widespread lockdowns. It moves fast. It doesn't move *that* fast.
A lot of people aren't capable of any sort of extrapolation outside of randomized control studies, which themselves often cannot detect minor treatment effects. As a result they sacrifice common sense and say nonsense like 'perfect seal or it's useless.'
AFAIK, N95 does not filter the outgoing air much, so I would say their threat modelling is around protecting a different asset
There are valves and non-valved N95. The cheaper ones don’t have valves.
Imperfect seals haven't been quadruple-blind backflip tested, therefore they don't work at all
It is the perfect illustration of the principle, perfection is the enemy of the good. Reducing you chances of getting/spreading infection is enough when you have no choice but to get your groceries at the supermarket.
Blind faith in experts, backing into whatever reasoning means the experts weren’t misleading them. Wouldn’t be so bad if the experts hadn’t backed into their recommendations in order to cover their assess.
I think it's hard to communicate that difference audiences need to care different amounts. Yes, your doctor who's around sick people 24/7/365 should probably be putting that n95 on perfectly, but me going to the grocery store really doesn't need to be that perfect.
Even a sloppily made mask from an old tshirt prevents does something. It prevents aerosols from being released. Its to protect others from the chance that you may already have it. People refusing to wear a mask because it wont stop them from getting it are thinking selfishly
prevents and does something*
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