I think it's pretty clear the best use of a lock down is to allow time to develop and improve the infrastructure and protocols to do this properly. But if you

I think it's pretty clear the best use of a lock down is to allow time to develop and improve the infrastructure and protocols to do this properly. But if you lack the competence or political/social will to do this properly, all you really have in the face of rising (or rising again) case numbers rolling lock downs and wait in hope of a vaccine. Or failing to manage it spectacularly, that also seems to be an option.