Right, all this graph shows is that jurisdictions that imposed mask mandates had much lower case rates. Presumably that's because they had a lot of policies in

Right, all this graph shows is that jurisdictions that imposed mask mandates had much lower case rates. Presumably that's because they had a lot of policies in place that put together were effective. Clearly they were doing something that worked, and it might even be sensible to use mask mandates as a proxy for that, but the article is a bit misleading. It would be nice to see how mask wearing rates had an effect but I suppose that's not as easy to track over time.