Wasn't there also a phrase at the time along the lines of 'the virus can't travel'? If we don't move then the virus can't go anywhere. The intimation was that it would simply run out of steam.
Yep. There’s been a lot of guesswork going on, some educated much of it less so. I’ve been more than a little guilty of it myself to be fair.
I think, in retrospect, it’s largely been wishful thinking!