You quoted me accurately, @CuriousaboutSamphire, but actually I don’t agree with your extension:
“as [I] actually said, had the government relied on acquired uimmunity it would have been a decision based on guesswork, one big, immoral, unsupportable punt.”
I don’t agree that a judgement would have necessarily been equivalent to guesswork, nor necessarily immoral.
It would have been possible to say “f* it; just carry on; who cares”, and that would have met your mark. :-)
But we could also have discussed the balance of probabilities (e.g., “is the virus really likely to /totally/ evade immunity?”), and we could have undertaken trials to test and extend our knowledge (e.g., allow volunteers to get the virus twice to see how their immune systems respond).
We actually looked aside while school kids and supermarket workers played that game, it’s just we ignored it and didn’t gather data.
So it seems we are willing to work on a hunch sometimes. (And I certainly hope the hunch was “it’s prob a normal virus, and kids and supermarket age groups typically haven’t been exceeding the IFR, so let’s continue”, as opposed to “I really have no clue if you’ll die, but you still have to go to work and school anyway!”)