Not sure if these links work but to flog a dead horse.
I guess the article assumes that the current system for NZ Super is sustainable. Is NZ Super a Ponzi scheme or has money been put aside to cover it. I am not sure as it wasn't debated in the last election and that is the stuff I leave to my elected leaders in government to work out.
http://www.stuff.co.nz/business/mone...ucks-to-retire