> It sounds reasonable in closed spaces (like in the examples you gave). But I'm reluctant to wear a mask outside in low-density area (I would if there were str

> It sounds reasonable in closed spaces (like in the examples you gave). But I'm reluctant to wear a mask outside in low-density area (I would if there were strong evidence it made any difference). It gets weird because there are many non-closed spaces which are very crowded. Imagine a concert, or the boardwalk.