Re: Wear the mask -- Not that simple
That is a wonderfully logical discussion around why we should wear masks.
The problem is people aren't quite so logical. Masks are left laying around after use, potentially infecting surfaces if they did stop anything. People fidget with masks and take them off, making it more likely to spread anything they have touched to their face. And as careful as you are, masks don't stop someone else sneezing in your face.
The studies around masks so far have been largely theoretical - they are based around models and assumptions but lack real world testing. Although Singapore might be providing that for us with their second wave within an environment where mask wearing is common during medium-to-high risk conditions.