Labour's big problem is it needs to rubbish what the Government is doing because it can't be seen to agree - to rail against the deficit while needing to offer more to potential voters.
It needs to complain that wages and salaries are so low especially in the public service, and the Government is too mean in health and social spending because all the votes it wants to attract sit there in the low and middle-wage brackets. At the same time it needs to say the Government is useless at running a budget and has failed to reach a surplus it promised.
To do this, Labour points at Sir Michael Cullen's record of reaching a proclaimed surplus that was actually more jiggery-pokery than the real deal and there are fish-hooks in that. Every time Bill English talks about the difficulties of reaching budget, given the debt mountain Labour left National to deal with, Grant Robertson points to the seven years since the Government won office, so the time we've had to get it right.
It sort of works the other way too. Just because Labour had some good years before 2008 is no guarantee that given the GFC, the quakes, the downturn in milk and oil and gas prices they would be doing any better.
This scenario reminds me of a riddle that poses: "If a man speaks in the forest and there is not a woman to hear him, is he still wrong?"
Her Majesty's Loyal Opposition is there to challenge and to offer alternatives, but disagreeing for the sake of it, with no viable alternative, in the face of accolades from other nations, with record spending in the social sector, record achievements in health, education and welfare seems a bit like "he protests too much".