I posted this before on another thread but the advice from an EBM expert Dr (Daniel Reeder is not) is very much on the side of public mask wearing
Public Mask Wearing British Medical Journal
Inside Story is contrarian on many, if not most, things. They almost seem to go out of their way to be so.
While bringing in the famous parachute analogy (
Study Shows Parachutes Are Totally Worthless) the BMJ piece makes a valid point about replicated and controlled trials, the quite obvious protection a parachute offers from falling out of an (airborne) aircraft derived from glaringly obvious first principles is not such a clear-cut metaphor in terms of mask-wearing for protection from/protecting others from covid-19.
(Mind you, there are some instances of people surviving falling out of aeroplanes at high altitude:
Infographic: No Parachute: The Highest Falls People Survived. But I wouldn't volunteer as a subject in a double-blinded test to determine with impeccable scientific rigour the benefit of a parachute when falling out of an aeroplane
- err, except if it was guaranteed to be at ground level
).
As a general principle, it is easy to see that wearing masks would mostly do no harm and could do good (physically and psychologically), in many situations outside the obvious clinical situation.
But if people don't wear masks properly, don't dispose of them appropriately, use them repeatedly and so on, benefits could be negated.
I'm not arguing for or against masks, just looking at various opinions (which is largely what they are in the absence of scientifically robust trials) and arguing for not fixating on silver bullets that don't exist - like the undelivered simplistic stream of 'world first' 'breakthroughs' in Australia on the vaccine front.