Why Masks Work BETTER Than You’d Think

Thanks to the Heising-Simons foundation for their support: (their COVID-19 grants: ) Check out to explore and for references. This video is about how masks (whether surgical, or N95, or cloth) are counterintuitive and actually work much better epidemiologically than one might expect. Masks do double-duty, and the fraction of interactions with masks is much higher than the fraction of peop