>Not really much to do with an "unproductive" population.
If we pretended that there had been 0% increase in economic productivity since then then, then yes, changing demographics are a problem.
This is indeed, what most justifications of increasing the retirement age quietly assume. It's probably quite easy to assume because the % of increase in productivity captured by the working class since 1970s as wealth has actually been quite small.
Compounded economic growth since the 1960s has, I think, been something of the order of 200% though.
If we pretended that there had been 0% increase in economic productivity since then then, then yes, changing demographics are a problem.
This is indeed, what most justifications of increasing the retirement age quietly assume. It's probably quite easy to assume because the % of increase in productivity captured by the working class since 1970s as wealth has actually been quite small.
Compounded economic growth since the 1960s has, I think, been something of the order of 200% though.