https://slatestarcodex.com/blog_images/masks_cdc.png https://slatestarcodex.com/blog_images/masks_cdc.png Seems pretty consistent with my point - if masks were

https://slatestarcodex.com/blog_images/masks_cdc.png https://slatestarcodex.com/blog_images/masks_cdc.png Seems pretty consistent with my point - if masks weren't believed to be effective they would not be recommended "if unavoidable" , a use / don't use recommendation is not the same as a scientific finding of efficacy - it almost always factors in an implicit cost-benefit analysis of exactly the kind SSC advocates for. Case in point - all countries are now recommending (and in some places legally requiring) masks and not because a bunch of RCTs were conducted in the last two months.