This study is dumb because: - the effectiveness of a mask is a physical measurement. That's where that whole "n95" thing comes from. It's almost as if NIOSH, OSHA, the WTO and every other regulatory body on the planet had their own standards, and you can look up how they compare. Wanna measure the "n" number of a cloth mask? been done. It isn't n00, it isn't n100. - the effectiveness of mask wearing is a sociological requirement. This study is "if you falsify data for me I will give you $190." It's like those fucking German choads who did fluid dynamics for a living who came out with a video that showed bicyclists poisoning the universe so that every old lady could stare daggers at me for daring to jog on the other side of the street. This study shows that umbrellas cause more rain than raincoats, so we should all leave our umbrellas in the closet if we want to arrive at work with our heads dry.What can be said about this study is that when absolute case loads are low, and mask wearing is lax generally, then wearing a surgical mask is a little better than not wearing a surgical mask.