Alan Bollard is a pingpong ball on an ocean of money. No matter how hard he tries to sink, forces beyond his control keep popping him back up top again. Inflation is now stuck over his 3 per cent limit.
Michael Cullen has a similar problem. Budget surpluses have ballooned up year after year. Even now, when he is trying to spend and spend, not least by shovelling money through Working for Families tax credits, he has another big number to live down.