I was on Radio 4's World Tonight  and BBC2's Newsnight  yesterday discussing the appointment of the former home secretary Alan Johnson as the new shadow chancellor. I don't think any of us saw that coming -- in fact, I don't think Alan Johnson saw it coming! When I spoke to him at the Labour party conference in Manchester, he seemed keen to shadow the Deputy Prime Minister, Nick Clegg, and hold the coalition government's constitutional and electoral reform agenda to account. He has never served in the Treasury before and is not an expert on the economy.
Nick Robinson  tells the following anecdote on his blog:
I once told Alan Johnson that some in the cabinet were arguing that he should replace Alastair Darling as chancellor. His communication skills, wry good humour and common sense were regarded by many as making him the perfect foil to Gordon Brown and more likely to cheer up the nation up than Darling himself.
I well recall his reaction – he looked like he'd swallowed a wasp. Unlike the other obvious candidate back then – Ed Balls – he had no economic training and was not desperate to do the job.
Regular readers of this blog will know that I was hoping Ed Balls would be made shadow chancellor . I believe he was the best-qualified person for the job – and he deserved it, too, having delivered a scathing critique of Osbornomics  at Bloomberg in August, and having harried and humiliated Michael Gove at the despatch box again and again over the summer. I also think it is odd that the two most formidable economists on the Labour front bench should be confined to home affairs (Balls) and foreign affairs (Yvette Cooper), where their impressive grasp of macroconomics will not be needed and where Cooper, in particular, might be wasted.
But what do I know? I'm just a hack. Ed Miliband is the leader and I'm guessing he has a plan. Plus, Johnson is an experienced and able politician, a great communicator with a fantastic sense of humour, as well as a fascinating backstory  that contrasts with George Osborne's privileged upbringing.
Now, there has been much debate over the past 24 hours as to whether the Johnson appointment and the decision to deny Balls the post he so craved is a sign of strength or weakness on the part of Miliband. I was on BBC Radio Wales with the former Blair adviser John McTernan  this morning: McTernan thinks the new Labour leader showed "strength" in giving Balls the home affairs, rather than the Treasury, brief. Indeed, the narrative emerging from the Blairites is "Ed Mili faced down Ed Balls".
But there is another view that says that Miliband the Younger capitulated to the Blairites and the right-wing press, who like to refer to him as "Red Ed" and to Ed Balls as a "deficit denier", by going with the safe option of Alan Johnson, a supporter of the candidate (Mili-D) who was backed by more Labour MPs than Mili-E was. Kevin Maguire , for example, says:
Ed Miliband's fluffed his first big call. Appointing Alan Johnson as Labour shadow chancellor is to stick with the Alistair Darling line on halving the deficit when Labour lost the election. The bold move was to put Ed Balls or Yvette Cooper in the job and shift the Labour position to slower cuts to keep the economy recovering.
I'm not sure where I stand on this. Perhaps, as I noted in a CIF piece  yesterday, the personnel issue is irrelevant and we should all wait to see what Labour's policy response is to George Osborne's Spending Review on 20 October.
Ed Miliband has repeatedly referred to the Alistair Darling plan for deficit reduction (that is to say, halving the deficit over four years) as a "starting point" and told Channel 4 News  the day after his conference speech that he'd like to do more with taxation, and less with spending cuts, than Darling had allowed for. Johnson's appointment might be part of a deliberate strategy by Miliband to take charge of the party's economic and, specifically, fiscal policy rather than outsource it to the shadow chancellor/chancellor (as Tony Blair did in the Nineties and Noughties).
It is worth remembering that Miliband taught economics at Harvard during his sabbatical in 2003-2004 and chaired the Treasury's Council of Economic Advisers between 2004 and 2005. Unlike Blair, and perhaps Johnson, he understands economics.
Meanwhile, the coalition's fiscal and welfare policies are in disarray – at the Conservative conference, a cut in child benefit for higher-rate taxpayers to save £1bn was followed by a transferable tax allowance for married couples which will cost £500m! In today's Daily Telegraph , Chris Huhne, the Lib Dem Energy Secretary, says that the proposed spending cuts are not "lashed to the mast" and that it "may be appropriate" to alter the plans in the event of a serious economic downturn. Like Ken Clarke , the Tory Justice Secretary, Huhne also admits that a double-dip recession is a possibility.
So now is not the time for Ed Miliband to go wobbly on deficit reduction. The opposition has to make clear that deep and immediate cuts will make the deficit get bigger, not smaller. And Alan Johnson needs to understand the Keynesian argument, and the "moral" argument – as his preferred leadership candidate, David Miliband, put it during the Compass hustings in June – for running deficits in downturns.
Here are some people Johnson should perhaps try to speak to for advice this week, ahead of the SR on 20 October:
* Paul Krugman
* David Blanchflower
* Anne Pettifor
* Martin Wolf
* Ed Balls :-)