People make two claims for masks. 1) They prevent the wearer from getting the virus from other people. 2) The prevent the wearer giving the virus to other peo

People make two claims for masks. 1) They prevent the wearer from getting the virus from other people. 2) The prevent the wearer giving the virus to other people. People talk a lot about viral load, and about breathing droplets deep into your lungs. So, (2) doesn't make much sense to me. The person with mild covid-19 infection places a mask around their mouth and nose, thus trapping all those infected droplets, which then get breathed back in. If the mechanism of action really is "breathing the virus causes severe infection" why would you want to trap the virus by your mouth and nose? > If masks are as completely useless as he claims They're not saying they're completely useless. They're saying that lots of the people wearing masks expect 100% protection, even if they're doing fucking stupid things. There's absolutely no point in both wearing a mask and going to a football match. https://www.thenational.ae/image/policy:1.998514:1585469410/337768-01-05.jpg?$p=bbe75aa&w=1136&$w=ec52ab9 https://www.thenational.ae/image/policy:1.998514:1585469410/... If we're going to force people to wear masks we need to make sure they're wearing them correctly, because an incorrectly worn mask may do more harm than good.