The latest review does, however, seek to address that issue by suggesting a new way to make this schedule affordable. It suggests super payments, which are now indexed to wage growth, should be tied to the average change of the Consumer Price Index and after-tax earnings. This would save $1.5 billion a year, in addition to the similar sum achieved from the lifting of the age of eligibility. That saving reflects the fact that wage growth is increasing faster than the cost of living, as measured by the CPI.
The simplest response might be to place superannuation in the same camp as benefits by tying it to the CPI. But the review says that index is not a totally accurate measure of the true cost of living. Using it, it says, would risk driving more people into poverty. Therefore, it opts for the hybrid model, subject to some of the savings from this being used to maintain the real living standards of older people. There is, the review concedes, a political risk that governments would not apply this money to the areas of greatest need.
It would be foolish to underestimate that danger. Every government has its own priorities. Some may be striving to pay off debt; others may be eager to tap into any source of funding for their pet projects. The issue of trust suggests, in itself, that this new indexing proposal, however well-intentioned, will struggle to gain popular acceptance. The savings required to ensure superannuation remains affordable - its cost will reach 7.9 per cent of gross domestic product by 2060, up from a current 4 per cent - will have to come from elsewhere.
Therefore, it is back to the age of eligibility. The Government continues to duck the issue, perhaps believing such a move would be akin to political suicide. But the age of eligibility was raised by five years in gradual steps through the 1990s.
There was no massive outcry. A further lift is now widely accepted as necessary. Today's "old" people will not be affected; this is not an issue for Grey Power or the old dogs of New Zealand First - but for young Baby Boomers and Generation X.