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Confused about mask wearing? Sure, it’s complicated. But not as complicated as some people imply. We’ve been looking at the science (see our articles here — with 84 references! — and here). Here’s a summary of the different streams of evidence, and our take on what it all means. The epidemiology of disease spread You’ve probably seen the videos of closely-packed dominos and mousetraps, where a single item fires off a huge cascade. The closer the dominos (or mousetraps), the more chaos gets gener...