The great increase in longevity has produced a surge in the desire to accumulate assets for retirement. It has outpaced the ability of the private sector to produce assets, so we need a larger government debt.
Practically, the desirable situation ought to be one in which any reasonably responsible person willing to accept available employment can find a job paying a living wage within 48 hours.
There is no reason inherent in the real resources available to us why we cannot move rapidly within the next two or three years to a state of genuine full employment.