I find the conclusion that the masks helped a little puzzling. I'm sure it indeed slowed the rate of infection, but what they ultimately wanted to happen was fe

I find the conclusion that the masks helped a little puzzling. I'm sure it indeed slowed the rate of infection, but what they ultimately wanted to happen was fewer total people getting sick. With constant travel through SF, slowing the infection doesn't seem like it should produce that result, just spread it out over more time.