Bernankeology

Why so much is read into the words of the Fed chairman.

Following Fed chairman Ben Bernanke's speech yesterday, the usual bout of trying to understand quite how much we can read in to his words has begun. Yet unlike the normally perjorative "Kremlinology" – attempting to infer things from the most minuscule turns of phrase – this Bernankeology is understandable and quite useful.

Central bankers have a strange job. They don't actually have many tools at their disposal; largely just the tripartite decision to raise, lower, or maintain interest rates. Yet many of the outcomes they create come, not from actually using this power, but from creating expectations as to their future use.

Suppose Bernanke knows he is likely to raise interest rates in the first quarter of 2013. Even though his actual power is relatively limited, he can create a wide spectrum of outcomes depending on how he announces this. The market reaction will be extremely different if Bernanke says now that he will raise rates in a years time, compared to if he maintains right up until the day that a rate rise would be inappropriate.

But this power to persuade brings with it its own problems. Just like a legislature, a central bank is fundamentally unable to constrain itself; it can make promises, but everyone knows that it is free to break them at any point.

All of this means that every speech Bernanke gives is likely to be very carefully aimed at creating just the right set of expectations. On the one hand, he can't ever gain a reputation for untrustworthiness, so they have to be scrupulously honest; on the other, actually saying what he believes may create the wrong impression.

Last week, Ryan Avent provided a detailed breakdown of exactly what the benefits of Bernankeology can be, focusing on the Fed's "forward guidance" where it hinted that it would keep interest rates low until at least 2013. He writes:

On the one hand, a pure focus on the language of the Fed's statement indicates that rates are likely to remain low through that period based on the state of the economy... On the other hand, the Fed may be hinting that it will be willing to keep rates low through late 2014 even if the trajectory of the economy warrants a rate increase.

In other words, the Fed might be attempting to commit itself to a deviation from its normal policy rules of the sort that might generate more rapid growth and inflation.

The problem the Fed has is that it needs to generate growth, but that growth is likely to come with relatively high inflation, of the sort which Bernanke has historically fought against. In order to help the economy, he needs to convince "the markets" that interest rates will be kept low even if inflation spirals out of control. The problem is that this, from an inflationary hawk like Bernanke, is unbelievable.

Avent points to a paper (pdf) which breaks down the distinction into two categories:

Delphic, corresponding to the first category above, and Odyssean, corresponding to the second, in which the central bank attempts to commit itself to deviations from typical rules.

Matt Yglesias offers a less refined version of the same strategy, breaking Bernanke's possible responses into an Eeyore response and a Tigger one. Either the Fed chief can "avoid optimistic forecasts as a way of signaling that rates will stay low for a long time," or he "can say we're climbing out of a steep hole so rates will stay low for the next 18 months come what may".

The test for Bernankeologists is to work out whether yesterday's gloomy speech is Odyssean-Eeyore, using gloominess as a mast to bind himself to, or simply Delphic, with the chairman making his most honest predictions and still being pessimistic.

Occupy LA activists march against the Fed in November. Credit: Getty

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Inside a shaken city: "I just want to be anywhere that’s not Manchester”

The morning after the bombing of the Manchester Arena has left the city's residents jumpy.

On Tuesday morning, the streets in Manchester city centre were eerily silent.

The commuter hub of Victoria Station - which backs onto the arena - was closed as police combed the area for clues, and despite Mayor Andy Burnham’s line of "business as usual", it looked like people were staying away.

Manchester Arena is the second largest indoor concert venue in Europe. With a capacity crowd of 18,000, on Monday night the venue was packed with young people from around the country - at least 22 of whom will never come home. At around 10.33pm, a suicide bomber detonated his device near the exit. Among the dead was an eight-year-old girl. Many more victims remain in hospital. 

Those Mancunians who were not alerted by the sirens woke to the news of their city's worst terrorist attack. Still, as the day went on, the city’s hubbub soon returned and, by lunchtime, there were shoppers and workers milling around Exchange Square and the town hall.

Tourists snapped images of the Albert Square building in the sunshine, and some even asked police for photographs like any other day.

But throughout the morning there were rumours and speculation about further incidents - the Arndale Centre was closed for a period after 11.40am while swathes of police descended, shutting off the main city centre thoroughfare of Market Street.

Corporation Street - closed off at Exchange Square - was at the centre of the city’s IRA blast. A postbox which survived the 1996 bombing stood in the foreground while officers stood guard, police tape fluttering around cordoned-off spaces.

It’s true that the streets of Manchester have known horror before, but not like this.

I spoke to students Beth and Melissa who were in the bustling centre when they saw people running from two different directions.

They vanished and ducked into River Island, when an alert came over the tannoy, and a staff member herded them through the back door onto the street.

“There were so many police stood outside the Arndale, it was so frightening,” Melissa told me.

“We thought it will be fine, it’ll be safe after last night. There were police everywhere walking in, and we felt like it would be fine.”

Beth said that they had planned a day of shopping, and weren’t put off by the attack.

“We heard about the arena this morning but we decided to come into the city, we were watching it all these morning, but you can’t let this stop you.”

They remembered the 1996 Arndale bombing, but added: “we were too young to really understand”.

And even now they’re older, they still did not really understand what had happened to the city.

“Theres nowhere to go, where’s safe? I just want to go home,” Melissa said. “I just want to be anywhere that’s not Manchester.”

Manchester has seen this sort of thing before - but so long ago that the stunned city dwellers are at a loss. In a city which feels under siege, no one is quite sure how anyone can keep us safe from an unknown threat

“We saw armed police on the streets - there were loads just then," Melissa said. "I trust them to keep us safe.”

But other observers were less comforted by the sign of firearms.

Ben, who I encountered standing outside an office block on Corporation Street watching the police, was not too forthcoming, except to say “They don’t know what they’re looking for, do they?” as I passed.

The spirit of the city is often invoked, and ahead of a vigil tonight in Albert Square, there will be solidarity and strength from the capital of the North.

But the community values which Mancunians hold dear are shaken to the core by what has happened here.

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