Tesco's "indie" coffee shop should worry defenders of capitalism

Free markets rely on informed choices, and those seem lacking in the case of Harris + Hoole.

There's been a lot of chatter about an article in today's Guardian (by which, I guess, I mean that I've been talking about it a lot). Headlined "Customers criticise 'indie' image of the coffee shops part-owned by Tesco", it details the reaction of customers in North London to their discovery that Harris + Hoole, an independent-looking coffee shop, is actually part of a ten-branch chain, of which 59 up to 49 per cent is owned by Tesco.

Rupert Neate writes:

"I thought: 'That's very brave, opening up next to Starbucks,'" Bridget Chappell, a full-time mum, said of Harris + Hoole, a new coffee shop in north London next door to a branch of the US behemoth and four doors down from a Costa Coffee.

"I like to try independent shops, and it was really very nice with great coffee," she said. "But when I got home, I looked it up and discovered it was a chain."

The people who are shocked to learn that they've just had a pleasant cup of coffee at a shop part-owned by Tesco have come in for a fair amount of criticism. After all, they clearly don't care about anything that matters, otherwise they'd have been unhappy before they learned the technical fact of the shop's ownership.

More to the point, this is supposed to be what capitalism's about, right? Tesco has identified a desire that customers have, and joined forces with a coffee chain to provide that desire. As the lead barista tells Neate:

We try to be independent. We want to be independent. We want to have that feel.

The question which no-one seems to have addressed is what it is that the customers actually desire. If what they want is an independent-feeling café, with mismatched furniture, blackboards for the menus and stacks of hand-made sandwiches, then Tesco can fulfil that need. But if what they desire is an actual independent café, then Tesco can't profit from that desire without the customer being mislead.

That's not to say that Harris + Hoole is necessarily to blame for those customers' mistake. As its chief executive tells the Guardian when asked about Tesco's stake:

If you Google it, you'll find it. Go to our webpage – it's not hidden. Putting it any more prominently would not reflect who we are as a business.

We can't know conclusively whether customers do desire independence or an independent feel, but my hunch is the former. That's certainly what the three interviewed in the Guardian piece claim, anyway.

The problem is, if you desire independent coffee, that's a relatively tricky desire to satisfy conclusively. You could research the corporate ownership of every coffee shop you go in to, but that would get difficult the first time you needed coffee in a strange city with no internet access. As a result, people have developed proxies to work out whether somewhere is part of a chain or not. Blackboards, mismatched furniture, hand-cut food: these things don't normally scale to a big chain, and so are usually a good indicator that somewhere has at most a couple of branches.

It may not seem that important, but it's pretty key to the claims free markets have for being an efficient way to run things that, when people think they are handing over money for a specific reason, they are in fact doing so. That's why we ban calling something organic when it's not, or slapping a union flag on Danish bacon. That even stretches to things which, in your opinion, may not be a choice that matters. Homoepathy is bunk, but it still would be bad for capitalism if anyone could put "approved by 90 per cent of homeopaths" on their sugar pills without that actually being the case.

But unfortunately for these specific customers, Harris + Hoole didn't mislead them. Purposefully or not, making yourself look like an indie coffee shop is not the same thing as telling customers you are an indie coffee shop.

If ethical consumerism is your bag, you're going to have to start putting a lot more effort into making sure you're doing it right, because these things are only going to get more common.

Baristas take part in a latte art competition. 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.