Perhaps we should not worry because if Mr Drucker's excellent survey is representative of the work of a person in his 90s, effective active ageing policies may offer a solution to the problem of ageing populations.
Other countries have ageing populations, but the problem in Britain is especially acute.
Even in mandarin-minded France, the problem of an ageing civil service is felt.
Increasingly, however, evidence is emerging that ageing is less of a problem than people, often younger, think it might be.
They are telling him of the problem of an ageing population.
The survey found the problem of an ageing oil and gas sector workforce had been effectively tackled, with a sizeable proportion of employees now aged under 25.
And even if this is changing with the important advocacy of people like Dame Joan Bakewell, the ageing population is still seen as a problem.
Attracting good public-sector managers is about to become even harder, because of the speed with which the public-sector workforce is ageing (see article), a problem made worse by managers who won't move.
ECONOMIST: The pay is better than it was. The bureaucracy is worse
An impact of this measure would, of course, see the ageing of populations, but that's a problem the world will have to face sooner or later unless we're to resign ourselves to unlimited population growth.
The problem, says Mr Anderson, is down to an ageing population and higher expectations.
The problem, added Mr Anderson, is down to an ageing population and higher expectations.
BBC: Isle of Man health service 'failing' over waiting lists
With 17.4% of Croatia's population over the age of 64, Croatia's ageing population and the impact that has on everything from pensions to creativity is a huge problem for the future.
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