I think a lot of anti-mask discussion is really just people love and absolutely cannot resist pointing out that someone else is "wrong" in their judgement. When

I think a lot of anti-mask discussion is really just people love and absolutely cannot resist pointing out that someone else is "wrong" in their judgement. When that someone else is an expert, especially so. HN users are probably even more prone to this behavior (pointless pedantry seems more common in nerds). Literally yesterday we had someone with a $250k test rig test dozens of masks: https://news.ycombinator.com/item?id=29878971 https://news.ycombinator.com/item?id=29878971 He also commented on how fit affects mask performance in great detail: https://news.ycombinator.com/item?id=29888381 https://news.ycombinator.com/item?id=29888381, https://news.ycombinator.com/item?id=29892032 https://news.ycombinator.com/item?id=29892032 In particular, he finds that a properly fitted N95 filters 99%+ of particles. A 75x boost in Covid protection seems reasonable in that case.