“Lockdowns don’t work!”
Sorry, reality disagrees. This graph shows Covid-19 infection rates from the Government’s data as of today. I have superimposed pink boxes showing the 2nd lockdown (5th November–2nd December) and 3rd lockdown (4th January, ongoing.
This isn’t complicated.
Depends what you mean by ‘work’. They make the virus spread slower than it would without a lock-down.
If by ‘work’ you mean ‘reduce the spread rate below one’ then sometimes they do and sometimes they don’t, and I don’t think anyone knows what makes the difference.
In the absence of vaccines they don’t ‘work’ at all, in the sense that they don’t actually get you any closer to solving the problem and returning to normality; they just delay having to deal with it.
That is demonstrably false, as New Zealand and some other countries have effectively eliminated the virus long before the availability of vaccines.