@MedSchoolRat
Trish Greenhalgh has repeatedly argues that the Precautionary Principle not rigorous evidence evaluation should be used to decide what to do about the pandemic. She is obsessed with masks and has made a fool of herself in her
blind enthusiasm.
Some wag on Twitter just generated this graphic.
Makes me laugh when anyone says "Follow the Science!" to decide what to do about covid. The people saying that loudest do not want science. They want Precaution as Only priority.
The point you appear to have failed to grasp is that the precautionary principle and science are not mutually exclusive. It's just a question of
where the burden of proof lies.
The UK government took the line early on that handwashing was fundamental, despite there being zero proof of covid transmitting in this way. Yet when it came to masks, proof was demanded.
Side note here - it's been widely known for a long time that the large droplet route (coughs/sneezes) is far less significant than once believed with aerosols suspected to be more important for influenza. The evidence that other respiratory infections spread via surfaces is also rather weak, so it's not like they were simply applying known science to a new (similar) virus.
The whole situation should be a combination of science and risk management. If its scientifically plausible for something to reduce risk then you do it until evidence emerges that it doesn't reduce risk. If you end up in a situation where you have two options and BOTH carry risk, then you don't randomly pick one and demand proof for the other... you select the one that carries the lower risk and continuously monitor the evidence as it emerges, ready to switch to the other option if necessary.
Incidentally, regarding mask usage - haven't read the paper you're referring to and it doesn't look like a good one. There have been a number of other studies showing a benefit.
jamanetwork.com/journals/jama/fullarticle/2776536
www.pnas.org/content/118/4/e2014564118