What the Treasury lacks in imagination, it surely makes up for in persistence.
Like some ageing door-to-door salesman, it turns up without fail after every election offering the finance minister basically the same, but increasingly outdated prescription for dealing with economic ill health - a free market-brewed elixir guaranteed to induce rasping sounds in the throat of any politician both brave and stupid enough to swallow it.
The sales pitch never alters. If you don't buy now, minister, you'll surely pay a much bigger price later on.
Perhaps the Treasury presumed it might get a more favourable reception from a centre-right government than its centre-left predecessor when it wrote its latest set of briefing papers for the incoming finance minister.
The head of the Treasury, John Whitehead, seemed to be hoping so.
Referring to medium-term economic challenges in his oleaginous covering letter to Bill English accompanying the briefing papers, he wrote: "I hope it will be possible for us to take you through this analysis to get a sense of how it connects with your priorities, and how to progress from there."
It doesn't connect. Certainly not with National's immediate priorities - and most likely not with its medium or longer-term ones either.
Like some sharp-eyed clay-pigeon shooter let loose on the range, Mr English used both barrels to blast out of the air the more radical (and thus more politically challenging) elements of the Treasury's agenda - a capital gains tax, a cut in GST, drastic curbs on the growth in public spending and, longer-term, a cut in national super.
It was as firm a rejection of Treasury's wish-list as Michael Cullen's put-down of the Treasury's post-2005 election call for tax cuts as an "ideological burp".
But it was what Mr English said next which was interesting.
National already had a plan. It was executing that plan. It would seek advice from officials only on those parts of the plan where it felt it needed advice.
The "plan" is National's 27-point, "first 100 days action plan", which covers matters as diverse as passing the party's tax package into law, tightening parole and bail laws, making full 12-month course of Herceptin available and repealing the Electoral Finance Act.
Mr English's dismissive remark about bureaucratic advice echoed a Cabinet Office circular to the chief executives of all government departments late last month.
"[The] Cabinet has asked ministers to prioritise work in their portfolios to implement the policy and legislative initiatives in the National Party's post-election plan, especially the legislative initiatives to be enacted or introduced before Christmas. Priority should be given to submissions that give effect to these initiatives."
In other words, don't try to block or obstruct us.
There has been frenetic activity since, so that legislation is ready to be force-fed to Parliament during the last two sitting weeks before Christmas as National locks into implementing its action plan as its absolute No 1 priority - and for several reasons.
First, the plan has helped give the Government direction and momentum from the word go. Without momentum, Governments drift.
While the rapid formation of John Key's Government and his whirlwind trip to Peru and London got things off to a rocketing start, the real grunt to sustain both Mr Key's and his Administration's momentum will come from delivering on the action plan.
This is a crucial period for Mr Key.
The traditional honeymoon accorded new prime ministers means public criticism is muted.
Nevertheless, for the many people who still have only a hazy notion of him, the attention accorded a new prime minister's first actions can create lasting impressions in people's minds which, if negative, might be hard to eradicate.
So far, however, Mr Key has given the impression of someone who knows exactly what he is doing and exactly where he is going. He has dealt capably with the unexpected which tends to end up landing on the Prime Minister's desk. But there have been hiccups.
The Air New Zealand crash was handled competently and sensitively.
Mr Key has turned the heat on the old enemy by ordering a ministerial inquiry into what very much appears to be Labour's flouting of the legal requirements that anything that might have a significant impact on the Government's balance sheet must be declared in the pre-election opening of the books.
Left with the $1 billion ACC hangover, Mr Key wants a ruling on whether Labour breached the Public Finance Act.
The plight of New Zealand tourists in Thailand was less of a triumph. Mr Key was the victim of Foreign Affairs caution and Defence Force ineptitude which put the two Air Force Boeing 757's out of deployment.
He finally cut through the continual talk about "options" by ordering officials to send an Air Force Hercules to next-door Malaysia.
The episode has taught him a valuable lesson: that while officials are largely cognisant of political pressures and can be highly political in protecting their patch, they are not politicians answerable to public opinion.
Labour's unseen strength in this area lay in the effective management of Helen Clark and Dr Cullen; matching that presents a real challenge for Mr Key and Mr English.
This week they fulfilled their pledge to call in departmental chief executives and lay down their expectations of "value for money" delivery of services, particularly in the front- line.
Mr Key told the chief executives that with the country facing tough economic times he did not want to read about about staff training seminars at expensive resorts.
The Government urgently needs to get some runs on the board before the economic recession and its impact becomes the only and all-consuming topic on the political agenda.
While National may have cleaned up at last month's election, the Prime Minister recognises that National is still not completely trusted.
He believes delivery on its commitments will go a long way towards recovering and keeping the trust which was lost in the 1990s.
There are going to be some difficult choices ahead - but not the ones the Treasury would make. National might have done so once upon a time.
But National now has a different leadership, for a different era.
• John Armstrong is the The New Zealand Herald political correspondent.