So what's with this pension crises?
Stories like this: http://news.bbc.co.uk/1/hi/scotland/4765975.stm
..claim that because more of us will be older, without new young people to support us, there will be some sort of government financial meltdown.
All the facts show that young people tend to be better educated and better qualified than older, due to e.g. spread of best-practise teaching, interactive whiteboards, more of them going to University, the availability of Wikipedia. Better qualified people get paid more. People who get paid more produce higher tax revenues per person.
So why can't we have a smaller number of people contributing enough to support a larger number of old people?
I've not done the maths so I don't know how realistic the idea is - but there's enough truth in it to make it worthy of mention in the debate. Yet it never is. Why?
Similarly 'ooh Europe has a problem because its population is shrinking relative to other regions' - but if it's the most powerful and has the best ideas.. who cares about numbers?
Both theories make the mistake of assuming people are of equal economic or cultural value. Generally, younger > older.