The weird thing about That Mask Study is that the main defining characteristic between people who think it means something and not much appears to be whether they've actually read the thing or not
Sure. There are a number of RCTs on masks in a variety of settings for various diseases
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Ah, now that is a more complex question. I think the thing we really want to know - whether mask recommendations as a public health intervention are useful - is probably not assessable in an RCT
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