I'm reading "wearing a mask can be useful, but wearing it incorrectly is not useful' crap over and over in this thread. It's a mask, it shouldn't be that hard to wear correctly.
Just fecking wear one.
Yes, we should be encouraged to wear them, but people in west aren't idiots if they don't know how. An instructive communications by Government endorsed messengers is required asap. Eg: exactly how they did with
'how to properly wash hands with soap' at beginning of this crisis.
Unless educated properly, its very easy to make mistakes, making wearing one futile, and at worst, spread disease further.
Eg: It's very easy to not know which way around it should be and wear back to front, making it totally ineffective.
Eg: You need to ensure there are zero gaps on edges.
Eg: Let's say you are asymptomatic. hence your mask is full of covid19 virus. You take off mask and place on a public surface, or even at home on dining table, thus exposing others to it.
Eg: Some are only one-time-wear and require safe disposal asap; some may be cleaned, but using specific cleaning process.
Eg: As
@Dwazza Gunnar Solskjær pointed out, they are uncomfortable to wear, and require adjusting to and practiced tolerance.
Am sure there are also many others I've not yet come across.