22 Aug '20 18:27>2 edits
@ghost-of-a-duke saidFirst, I see no reason to "run with the one in a million" based on an offhand remark by Shav. You ignored my point that the actual wording of the guidelines is extremely vague and could apply to many individuals.
Sure. We are talking about a small minority of people who are exempt from wearing a mask. Shav has suggested one in a million. (Ridiculous of course, but let's run with that).
UK population (rounded up) 70 million. - So that's 70 people in the whole of the UK walking around without a mask (though still able to social distance, wash hands etc). Now bearing in mind ...[text shortened]... duals from going into society however it is much more likely damage will be done to their wellbeing.
The UK has had 325,000 confirmed cases of COVID and there are various estimates of how many actual cases there are to confirmed ones, but I haven't heard any responsible ones of less than 10:1. Even with that conservative estimate, something like 5% of the UK population has already been infected with the virus and the country has been adding more than a 1000 confirmed cases a day (meaning more than 10,000 actual cases per day). https://www.worldometers.info/coronavirus/
So the chances of a person with a mask exemption spreading the virus (if they are allowed to mingle with the public) at some point is about 100% and the chance of multiple persons doing so is probably close to the same. And bear in mind that one person spreading the disease can affect many others.