> Why do you need to 'protect others' if their mask works inbound? Huh? You need to protect others because masks (mostly) don't work inbound, that's what I'm s

> Why do you need to 'protect others' if their mask works inbound? Huh? You need to protect others because masks (mostly) don't work inbound, that's what I'm saying. (But do work outbound.) > Clearly masks are not trivial to validate given that there is no evidence they have any positive effect Sorry, restate: the presence of masks is trivial to validate.