I asked because you posted as if a mask is supposed to protect the person wearing it. These days, that level of ignorance is weird for a layman. A doctor has to know better, but here you are a doctor, posting as if you do not know that. N95s? Yeah, I know those are supposed to protect the wearer, but they do not really seal tight enough for that. I have some kn95s, and it is obvious that they do not seal well enough to protect me very well. A mask is far more effective protecting other people from the person wearing it than it is at protecting the wearer from other people. For you to talk about your medical knowledge while posting as if you do not know that is inexplicably bizarre. Then you talk as if masks are useless because people touch their faces. As a doctor, why aren't you telling people not to touch their faces? Your attitude seems to be that people are too hopelessly stupid to do a simple thing like wear a mask without rubbing their hands all over everything and then all over their face. That is your reason to discourage people from wearing masks? Duh.