I’m not sure why you cite consistent mask usage as the primary reason. What I imagine to be a more likely cause is that there is a large proportion of SF’s pop

I’m not sure why you cite consistent mask usage as the primary reason. What I imagine to be a more likely cause is that there is a large proportion of SF’s population (esp compared to other cities) that are professionals who have the privilege to be able to work from home without worrying about losing their jobs. Couple that with vast grocery and food delivery services. So staying home is more convenient than most places