The major conclusion to that discussion ("surgical masks work during surgery") was that the did work, but because they form an effective barrier against spittle

The major conclusion to that discussion ("surgical masks work during surgery") was that the did work, but because they form an effective barrier against spittle and so on. Studies show that surgical masks are only marginally effective at their goal of reducing transmission, and then only if they are worn properly. Of course, one can rely upon medical staff for that. Not so much the general population.