Kelvin MacKenzie isn't a good macroeconomist

Transfers from rich areas to poor ones are really very useful for not screwing up the economy.

Former Sun editor Kelvin MacKenzie wrote a silly column yesterday. In it, he argued that "the middle class of London and the South East" are underserved by politicians, and called for a new political party which "believes that the striving classes in the South are overtaxed and overburdened".

It was, clearly, bunk. Charlie Hallam took most of it apart yesterday, pointing out that high pay is not the same as a large contribution to society, and that much of the boost London and the South East gets is merely entrenched advantage:

A start-up will find loans easier to obtain with a London address. Contacts are easier to make. Lobbying is easier. And there's that whole prejudice thing you don't have to deal with if you're based in the south.

The Economist's Daniel Knowles also points out that:

Every example he offers of London and the south being attacked takes the form of taxes on the rich—stamp duty for example—which also apply in the north. Meanwhile, the subsidy he says that the north gets is in the form of public spending: welfare benefits or social housing for example, which also apply in the south.

That is, far from wanting to fight for the South, MacKenzie is arguing for the rich of Britain and against the poor, wherever they actually are.

But there's a far simpler reason why MacKenzie is talking crap. The Telegraph's Ed West touched upon it in an otherwise faintly patronising post, writing:

Different parts of the economy require different economic policies, which is why the convergence of interest rates made the euro such a fundamentally bad idea for those countries on the fringe, such as Greece and Spain, since monetary policy would be set by people in Frankfurt and Brussels and therefore would be suited towards Frankfurt and Brussels. That’s a model that will work fine so long as the Greeks are prepared to live in perpetual poverty in the name of European solidarity, and that Germans are happy to pay the Greeks’ welfare bills.

The north and south of Britain are, by virtue of sharing the same currency, yoked to the same monetary policy. Short of some extraordinarily unorthodox economics – banknotes which catch fire south of Watford Gap? – that policy will be suboptimal for one or both areas of the country. Aggregate demand shocks rarely affect the nation uniformly, and so the Bank of England has to decide whether (say) inflation in the south is worth preventing a recession in the north.

But one way of lessening that impact is with common fiscal policy. That way, shocks in part of the country can be dealt with more quickly by transferring revenue from the healthy part to the struggling part. Which is, of course, exactly what MacKenzie was complaining about.

(It is worth noting that this analysis is roughly that which was relied on by every anti-Euro economist ever, who all feel very smug these days as Greece needs continual fiscal transfers just to stay in the economic bloc.)

The alternative – giving the north its own currency and monetary policy – may, I suppose, be what MacKenzie was angling for all along. It would certainly get those pesky Scousers out of his hair.

The North. Photograph: Getty Images

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 Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.