Thus it's not as simple as 'these restrictions save lives'; it's 'these restrictions may save some lives at the cost of other lives.'
That may be true, but the immediate problem is getting tens of thousands of new ventilators built on an emergency schedule, and also setting up new emergency hospitals.
The UK has set up three new emergency hospitals at conference centers, which it calls the NHS Nightingale Hospitals. And lots of major engineering companies have responded to the UK government's request to make ventilators.
The new Nightingale Hospital in London has 4,000 beds, and is being readied for the tsunami of sick coronavirus patients that are expected in the coming weeks.
But these ventilators will not be available for around 2 months, because medical equipment engineering standards are high, and there are medical engineering regulatory rules which the equipment must pass. So the next 2 months are going to be grim, because lots will probably die for want of a ventilator.
I think once the medical system has geared up to dealing with the expected volume of coronavirus patients, and it will take 2 months or so to gear up, then we will be in a better position to see whether the medical system can cope, and thus whether some of the social distancing measures can be lifted.
You want to ensure that you don't lift the distancing measures too much, as then this may start to overload even the geared up medical system.
It's not easy to gauge this though, because there will be a lag of several weeks between lifting restrictions and the next wave of coronavirus patients that the lifting creates.