Really Dan?....it only took less than five minutes in and you could tell this guy wasn't quite on the mark with what he was saying. One he said studies of surgical mark vs respirators showed no significant differences....you do know that's why the recommended efficiency starts at n95...because there is no difference between n95 and upwards. Wearing an n95 gives you the same coverage as n99...that's all that means because you are talking surgical grades, he's not talking bandanna vs surgical. Then he goes on to say "viral loads act essentially in the same way, their emitted by aerosol particles in the air, they transmit high transmisity (I am not sure that even a word or I caught that quite right) during the winter season then it drops off in the summer because aerosols particles are not stable in humid air and corona viruses are no different"....okay then it's the middle of summer almost and cases are rising all over the place...so what gives with that? I don't think I need to listen to much more of his "logic" and what this really all gets down to me wondering is if surgical mask or above really didn't work then why have doctors and nurses been wearing them for years? If surgical mask or above didn't work then why isn't the vast majority of health care workers and doctors not sick from this virus? Not that we are discussing for the most part surgical mask wearing here by the general public, we are not, we are talking about face covering(s) in different formats other than hospital grade surgical....which brings me to my next question...and that is do we really think that no studies have been done to show that shielding the public from someone who is sick by them wearing a mask has never shown a benefit but millions of dollars a year have been spent in hospitals doing exactly that when people show up there sick and are ask to cover their face? I don't think they've taken that question lightly considering the amount of money involved in the practice...and if you look you'll find those studies and they all show some benefit and the benefit varies based on the virus at hand and the size of the droplets involved. You see the real issue here isn't if there's a benefit, there's always a benefit even if it's a minute benefit, the real issue here is that millions of people over the years went into hospitals sick and happily donned a mask to help protect the environment but when that became a mandated request outside the hospital in their everyday ordinary lives now they feel they are being infringed upon, their rights taken away, etc., that's the real underlying issue not the efficiency or effectiveness of mask wearing.