I hear this all the time "masks have proven to be incredibly effective" Have they? Data didn't really bear that. And there are tons of studies that day, for th

I hear this all the time "masks have proven to be incredibly effective" Have they? Data didn't really bear that. And there are tons of studies that day, for the lay person, we don't know. Or they say n95 and surgical masks may be effective but cloth masks are an unknown.