[dijksterhuis]

As ever, the face mask issue is more complicated than it appears at first glance.

Yes, if everyone in the world had a sufficient supply of face masks and wore them correctly all of the time then the R0 would drop significantly.

The two keys parts of that statement are _sufficient supply_ and _wear them correctly_.

There is not a sufficient supply of face masks for everyone on the planet. Anyone purchasing face masks for themselves (without showing symptoms) are taking stock away from, for example, healthcare workers. Who definitely need the supplies.

I've seen people who have bought facemasks touching their face and fiddling with the masks. They don't know how to wear them correctly, making their purchase a complete waste. They've wasted stock that could have been made available to healthcare workers.

If the world was perfect and every human was perfect then yes I would agree with your statement.

But it isn't and they aren't.

WHO seems to understand this and so it seems to be a factor in their advice.

I believe they may have even made a statement to this effect at some point?

[banads]

It's not complicated at all, except for those who wish to cover up responsibility for how unprepared we have been.

>There is not a sufficient supply of face masks for everyone on the planet. Anyone purchasing face masks for themselves (without showing symptoms) are taking stock away from, for example, healthcare workers. Who definitely need the supplies.

Anyone that has access to cloth can make a rudimentary mask that is better than nothing.

>If the world was perfect and every human was perfect then yes I would agree with your statement.

The perfect is the enemy of the good.