There is a clear belief in some quarters that all politicians are a bunch of ignorant, indecisive idiots, and there is a degree of justification for this belief. There is also a widespread belief that politicians simply need to listen to impartial technical experts and follow the advice they offer.

Unfortunately the reality is that impartial experts are just as unsure as anyone else, and are willing to admit this. So our problems are not just due to poor political decision making (or decision-not-making); the truth is that people (everyone, experts - doctors, epidemiologists, mathematicians, not just politicians) are *all* unsure and uncertain.

To quote from this mathematical site:

https://plus.maths.org/content/maths-minute-r0-and-herd-immunity

"*It's because we need to protect vulnerable people and our health care systems that much of the world is currently in lockdown. Ironically, lockdowns mean that many of us are not gaining immunity by having been infected, so the epidemic may spike again once social distancing measures are lifted.*

So what are we to do in this worst case scenario? One option would be to remain in lockdown until there is a vaccine, but that could be over a year. Another is to go into intermitted lockdowns to keep successive spikes of the epidemic below the critical capacity of health care systems.

* The truth is that at this moment nobody knows exactly what is going to happen in the future.*"