Trials on masks universally fail to take into account the field results. And that’s where they fall down. Mask effectiveness relies on purity - everybody doing things with military (or medical) precision.
The short of it is that people don’t stick rigidly to the effectiveness requirement. Hence why states and countries that stop compulsion don’t see any deviation in the rate of change.
Like HCQ it works in the lab, but not in real life.
What’s disturbing is why so many people still believe they do - and why they desperately want them to work - which moves into the political and religious (“I’m pure - it’s everybody else that isn’t”) rather than the scientific.
At this stage it’s become like carrying posies to ward off the Black Death.
The short of it is that people don’t stick rigidly to the effectiveness requirement. Hence why states and countries that stop compulsion don’t see any deviation in the rate of change.
Like HCQ it works in the lab, but not in real life.
What’s disturbing is why so many people still believe they do - and why they desperately want them to work - which moves into the political and religious (“I’m pure - it’s everybody else that isn’t”) rather than the scientific.
At this stage it’s become like carrying posies to ward off the Black Death.