I immediately went to work (this was back in March, 2020) to see if there was any way to contain COVID-19. And like many of us, that road led me to masks. It looked like various countries that had strong mask-wearing mandates had successfully managed to dodge the pandemic. And so I wrote this piece — “How We Know Masks Work.” It is still up on my blog, as I have a policy to leave up the things I’m wrong about, as well as the subjects I nail.
