Switzerland and Denmark go negative

Negative nominal interest rates arrive.

Government interest rates have, in real terms, been negative for quite some time. Britain, the US, and Germany are all in the position where they are being paid to borrow money. This creates some rather interesting incentives for governments: they can fund massive investment programs at minuscule expense, they can use money which would be spent on interest payments on more valuable projects, or they could even just stop collecting taxes entirely.

Unfortunately, political considerations have meant that most governments have been unwilling to show even the slightest innovation when responding to a situation in which the most basic rules of the game no longer hold. And, when negative interest rates came to business, the same thing happened.

Unilever and Texas Instruments are also borrowing below the rate of inflation, but when presented with free money, businesses – even ones like Google, supposedly staffed with the world's greatest blue-sky thinkers – don't do anything other than sit on monstrous cash piles waiting for a more favourable investment environment.

Now the trend has spread in a different direction. Two banks – State Street Corp. and Bank of New York Mellon – have announced that customers holding accounts in Swiss Francs or Danish Crone will be subject to a negative interest rate. That's negative in nominal terms, so in real terms it's an even sharper penalisation of savers.

These two currencies are experiencing some of the tightest squeezes because they are both pegged closely to the euro (Denmark is in ERM II and Switzerland has enacted a ceiling on how much it can appreciate relative to the currency), while also being in strong demand because they are not actually the euro – making them the star choice for investors who want to hold european assets without taking the risk that the eurozone will messily implode.

Conventional wisdom says that nominal negative interest rates can't happen. Savers will merely withdraw their money and keep it in cash to avoid the "fee". This doesn't seem to be happening, probably because the value of having a bank account in another countries currency is high enough that it's worth paying for the benefit. Conventional wisdom, yet again, is apparently wrong.

The Matterhorn, Swiss icon. 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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A swimming pool and a bleeding toe put my medical competency in doubt

Doctors are used to contending with Google. Sometimes the search engine wins. 

The brutal heatwave affecting southern Europe this summer has become known among locals as “Lucifer”. Having just returned from Italy, I fully understand the nickname. An early excursion caused the beginnings of sunstroke, so we abandoned plans to explore the cultural heritage of the Amalfi region and strayed no further than five metres from the hotel pool for the rest of the week.

The children were delighted, particularly my 12-year-old stepdaughter, Gracie, who proceeded to spend hours at a time playing in the water. Towelling herself after one long session, she noticed something odd.

“What’s happened there?” she asked, holding her foot aloft in front of my face.

I inspected the proffered appendage: on the underside of her big toe was an oblong area of glistening red flesh that looked like a chunk of raw steak.

“Did you injure it?”

She shook her head. “It doesn’t hurt at all.”

I shrugged and said she must have grazed it. She wasn’t convinced, pointing out that she would remember if she had done that. She has great faith in plasters, though, and once it was dressed she forgot all about it. I dismissed it, too, assuming it was one of those things.

By the end of the next day, the pulp on the underside of all of her toes looked the same. As the doctor in the family, I felt under some pressure to come up with an explanation. I made up something about burns from the hot paving slabs around the pool. Gracie didn’t say as much, but her look suggested a dawning scepticism over my claims to hold a medical degree.

The next day, Gracie and her new-found holiday playmate, Eve, abruptly terminated a marathon piggy-in-the-middle session in the pool with Eve’s dad. “Our feet are bleeding,” they announced, somewhat incredulously. Sure enough, bright-red blood was flowing, apparently painlessly, from the bottoms of their big toes.

Doctors are used to contending with Google. Often, what patients discover on the internet causes them undue alarm, and our role is to provide context and reassurance. But not infrequently, people come across information that outstrips our knowledge. On my return from our room with fresh supplies of plasters, my wife looked up from her sun lounger with an air of quiet amusement.

“It’s called ‘pool toe’,” she said, handing me her iPhone. The page she had tracked down described the girls’ situation exactly: friction burns, most commonly seen in children, caused by repetitive hopping about on the abrasive floors of swimming pools. Doctors practising in hot countries must see it all the time. I doubt it presents often to British GPs.

I remained puzzled about the lack of pain. The injuries looked bad, but neither Gracie nor Eve was particularly bothered. Here the internet drew a blank, but I suspect it has to do with the “pruning” of our skin that we’re all familiar with after a soak in the bath. This only occurs over the pulps of our fingers and toes. It was once thought to be caused by water diffusing into skin cells, making them swell, but the truth is far more fascinating.

The wrinkling is an active process, triggered by immersion, in which the blood supply to the pulp regions is switched off, causing the skin there to shrink and pucker. This creates the biological equivalent of tyre treads on our fingers and toes and markedly improves our grip – of great evolutionary advantage when grasping slippery fish in a river, or if trying to maintain balance on slick wet rocks.

The flip side of this is much greater friction, leading to abrasion of the skin through repeated micro-trauma. And the lack of blood flow causes nerves to shut down, depriving us of the pain that would otherwise alert us to the ongoing tissue damage. An adaptation that helped our ancestors hunt in rivers proves considerably less use on a modern summer holiday.

I may not have seen much of the local heritage, but the trip to Italy taught me something new all the same. 

This article first appeared in the 17 August 2017 issue of the New Statesman, Trump goes nuclear