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New Covid wave has begun and masks should be worn again, scientists warn
(www.independent.co.uk)
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Let me help you out.
Wearing a mask is like wearing a mask. It helps prevent spit and other large particulate matter from escaping your personal space. Some work better than others, some work almost not at all.
All are, at least, somewhat helpful in containing the spread of illness.
You can work with that information.
And despite masking, COVID spread all over the globe and killed a fuckload of people.
Would more people have died if there was no masking? Yes, absolutely.
But the question of interest is: how many fewer people would have died if we made a concentrated effort to improve ventilation in public spaces?
Maybe I'm completely missing your point, or maybe you're just being snarky/contrarian and don't really have a point, but it sounds like you are basically saying (reusing the above analogy) "Why are we talking about adding seatbelts to cars when we already have helmets?"
I can promise you the latter is not the case. It's possible I misinterpreted your post. I am 100% for layers of preventative measures.