> Wouldn't the same apply to mask wearing? No, for a ton of reasons. Off the top of my head: (1) Masks are more effective at preventing transmission than rece

> Wouldn't the same apply to mask wearing? No, for a ton of reasons. Off the top of my head: (1) Masks are more effective at preventing transmission than reception. (2) Different individuals have different levels of concern, which might lead one to choose a mask and another to choose not to wear one. (3) Different individuals face different levels of risk. The person who is immunocompromised may wear a mask even when it would make no sense for other people. (4) The customer may encounter 2-3 service employees in a day; the service employee may encounter hundreds of customers in the same time. And that's without even getting into political issues (in the US, where mask-wearing has become politicized).