January 2025 – Spinor Info

Reunification

Jan 302025

Repeatedly, I see questions on Quora, asking why Canada resists Trump’s suggestion of becoming the 51st state. Why bother going through the likely hardships instead of giving in to Mr. Trump’s will?

Very well, allow me to offer my own contribution, to help the process along. Here, I designed a nice voting slip that could be used for this purpose. The date, of course, can be easily changed.

I must confess that the idea is not original. I had help, an elegant historical precedent that, I think, is perfectly suitable for this purpose:

I hope my contribution is received in the same spirit in which it is offered, and perhaps thanked by a nice, “from the heart” gesture (with the right arm properly extended of course) by those who approve.

PDF is available upon request.

Eighty years

History 2 Responses »

Jan 272025

Eighty years ago today, Auschwitz-Birkenau, the site of one of the worst systematic crimes against humanity, was liberated.

Some are trying to erase the Holocaust from history. Some are trying to pretend that it was no big deal.

But it did happen. And it was a “big deal”: Some six million Jews were murdered, along with millions of others: Roma, homosexuals, the disabled, prisoners-of-war, political prisoners.

“Never again” and “we remember”, we are told, but it is happening over and ever again, even if on a smaller scale; and many are trying hard to make us forget.

We won’t. I won’t.

Eighty years is a long time. Very few people are alive today who have seen this hell on Earth firsthand and survived to tell the tale. But a few are still around. And there are those of us who knew people who were there. Who knew people who avoided being deported there only by the grace of God as the expression goes. (One elderly friend of mine, no longer among us, told me how he was personally saved by Raoul Wallenberg, as he was one of the lucky ones carrying a Swedish Schutzpass.) There were those who tried to help people survive. My father, I was told, was among them: forging documents for friends, for his Jewish first wife and her family members, to help them survive, avoid the ghetto, avoid the cattle cars.

“Never again” is a nice catch phrase but what if it happens again? Will we remember? Will I remember? And if I do remember, will I have the courage of my father?

I hope I’ll never have to find out.

Physics for the masses

Personal, Physics No Responses »

Jan 262025

I keep being asked: When will you write a book already? And true, I have several half-baked book ideas that I am contemplating. One of them was going to be a book discussing some key concepts in physics by offering both an accessible narrative and a technical background.

Well, it appears I have been scooped, if that’s the right word! I first heart of Brent Lewis’s project when he contacted me last year, sending me a prerelease copy of Theoretical Physics for the Masses. Oh my, I thought, this is the book I wanted to write!

Or, well, as close as possible to the book I wanted to write, considering that it is not my brainchild and as such, Lewis’s selection of topics differed slightly from mine. Anyhow, long story short, the book is now published by World Scientific, a reputable publisher of books and numerous journals. I hope that it will mean a decent effort at marketing and Lewis will be able to collect royalties on many copies.

Considering the breadth of subjects, the book is surprisingly thin: Just over 180 pages, with appendices included. The main body part is less than 60 pages, however; the remainder are the technical appendices. Depending on how you look at it, this could be considered a bug or a feature.

Who is this book for? Let’s face it, the technical appendices are not for the faint-hearted. Lagrangian field theory, the equations of general relativity, Fourier-decomposition of a scalar field and derivation of the corresponding quantum field theory propagator, even a brief overview of the key features of bosonic string theory: this is not high school mathematics. Nor can we possible expect a thorough treatment of these subjects in such a thin volume.

Yet this book reminds me of a much thicker tome published many years ago: Penrose’s book, The Road to Reality. Like Penrose, Lewis presents a road map for the aspiring physicist. The plain English narrative offers something that is sorely absent from many textbooks: background and motivation. The technical appendices in turn make the connection between the core ideas and their actual implementation. And this is where the brevity of Lewis’s book might actually be an asset: Whereas Penrose spends several hundred pages discussing mostly pure mathematics, Lewis jumps right ahead into the physics.

So no, you will not learn general relativity or quantum field theory, nor the necessary mathematical foundations, from this book. But if you want to learn these subjects, the book can serve as your guide. Reading it before you dig into a textbook like Wald’s General Relativity of Peskin & Schroeder’s An Introduction to Quantum Field Theory will help maintain a bird’s eye perspective as you begin your journey. You may not have skills level-knowledge yet, but Lewis’s book will help you not lose sight of your intended destination as you study.

Let’s face it: These subjects are hard. Any resource that helps make it a tad easier to learn is welcome. And Lewis’s book definitely helps.

Toys, toys!

History, Music No Responses »

Jan 262025

Someone reminded me of Kurt Weill’s poignant 1936 anti-war musical Johnny Johnson today. I recalled in particular the last song, Johnny’s song, in which the simple-minded protagonist Johnny, never losing his faith in humanity, tries to sell toys to an indifferent public who are rushing over to the next square to listen to another warmongering speaker. “Toys, toys!” cries Johnny but no one listens.

I did not remember the song’s lyrics. Apparently, there are different versions, but the one I am familiar with includes these lines (emphasis mine):

At last we’ll find the day
When joy shall be our song

I hear them say it’s all baloney
The world’s a mighty cruel place
With tooth and claw and promise phony
An old hard guy he wins the race

But you and I don’t think so
We know there’s something still
Of good beyond such ill
Within our heart and mind

Ouch. Did Paul Green, who wrote the song’s lyrics, foresee the future?

Oh well. Here’s a Midjourney cat that I think aptly captures the musical’s atmosphere.

Pumping elephant

Language, Science 1 Response »

Jan 212025

I cannot stop laughing.

Earlier today, I came across one of the weirdest papers yet that I’ve ever come across in the scientific literature.

I admit that my first thought was that it was a joke paper in a predatory journal. But no. It was a serious publication, in a serious journal, published under the Springer Nature label, no less.

And like all proper scientific publications, it had a title, an abstract, and… No, wait. It did not have an abstract. What it had instead was…

A pumping elephant.

Seriously. A pumping elephant.

But if it was not a joke paper, then what was it? Having noticed that the paper’s authors were all Chinese, it occurred to me that perhaps it’s a mistranslation. The AI Claude quickly confirmed my suspicion. Apparently, the authors mistranslated “Abstract” as “抽象” (chōuxiàng) in Chinese, which does mean “abstract” but in the sense of “abstract concept” rather than “summary of a paper”. They then literally translated 抽 (chōu), which can mean “to pump” and 象 (xiàng), which can mean “elephant”.

So perhaps it was an embarrassing but ultimately innocent mistake by the paper’s authors.

The same cannot be said about the journal’s editorial staff. That such a glaring piece of nonsense made it to the pages of a reputable journal signals a complete lack of copy-editing and editorial supervision.

To their credit, the paper was ultimately retracted. And it only took about three and a half years…

I asked Midjourney to create for me a pumping elephant. Clearly inspired by Verne’s famous novel, The Steam House, Midjourney produced some wonderful steampunk pumping elephants. This is my favorite so far.

Incidentally, there are also YouTube videos of bona fide pumping elephants: Elephants that learned to use a water pump.

Needless to say, I’ll be sorely tempted to use “Pumping elephant” to label the Abstract in my future publications…

Hello, Freddy

Cats, Personal 4 Responses »

Jan 192025

Hello, Freddy. Please say hello to the world.

Hello, world. Please say hello to Freddy.

A cartographic reminder

Canada, Politics 3 Responses »

Jan 182025

Here is my attempt to remind our illustrious world leaders of the importance of proper cartography:

Is it really too much to hope for that they respect the esteemed profession of mapmaking?

2025

Canada, Cats, Cybernetics, Politics No Responses »

Jan 082025

We are barely a week into the new year, 2025. Yet here are some news items that would have sounded like outlandish B-movie nonsense just a few years ago.

The incoming president-elect of the United States expressed his interest in annexing Greenland, and did not rule out the use of force against a NATO ally;
The incoming president-elect of the United States expressed his interest in reoccupying the Panama Canal zone and did not rule out the use of force;
The incoming president-elect mused about turning Canada into the 51st state and did not rule out the use of “economic force” to accomplish this;
Ukraine’s offensive in Russia’s Kursk region led to a large number of casualties on the Russian side, including thousands of North Korean troops;
North Korea successfully tested a new intermediate-range missile;
An article in Foreign Affairs magazine argues that South Korea should acquire nuclear capability for deterrence;
After several similar incidents involving Russian ships in the Baltic Sea, now a Chinese vessel damaged undersea cables connecting Taiwan;
A far-right politician in EU member state Austria is set to form the next government of the country;
Alien ship set to land in New York’s Central Park turns back at the last minute – “Too dangerous, no intelligent life,” they message their home planet.

OK, I threw in the last one. But the rest? In 2025? Aren’t they just as outlandish as the bit about aliens? Aren’t we, and by that I mean the whole human race, supposed to be, you know, a tad more intelligent?

Guess not. Can’t wait for the world to be taken over by AI-assisted cats.

Unsolicited theories

Personal, Science No Responses »

Jan 072025

I just made up my mind.

I’ll never again respond to unsolicited theories, unsolicited requests to comment, not even from Nobel-prize winners.

Because in the end, unless I enthusiastically agree with their ideas, no matter how silly, how outlandish, it always ends badly.

It doesn’t matter how polite I am, how carefully I choose my words, how much I try my darnedest to steer them in the right direction. And it makes no difference if the person in question is just, say, a taxi driver somewhere in Asia or an accomplished scientist in Europe.

If you have a scientific idea, do the right thing: write it up, send it to a journal, publish it. I am officially not interested anymore. Sorry, but I’ve been insulted one too many times and finally, my fuse got blown. I have better things to do than nursing your hurt feelings because the science community is not treating you seriously.

In fact, chances are that in the future, I’ll blacklist all such e-mail addresses right away. My sanity is more important than your feelings.

The economy vs. the economy

Canada, Economy, Politics No Responses »

Jan 042025

I don’t much watch news channels anymore, but earlier today, I caught a fragment of a report arguing that voters are not rejecting the left because of the economy; that the shift to the right is occurring at a time when the economy is doing fairly well, and that there was no similar shift to the right during the last major economic crisis.

A few hours later (or maybe less) on the same channel I caught a fragment of a report about CEO pay here in Canada: for the top 100 (?) companies, it is now well over 200 times the average worker’s salary. The report pointed out that barely more than a decade ago, it was “only” a little over 100 times the average worker’s salary.

So perhaps, just perhaps, it’s the economy after all?

One of the better attempts by Midjourney

I mean, maybe the economy is doing great insofar as macroeconomic indicators are concerned. But we don’t live off macroeconomic indicators. We do not pay with macroeconomic indicators for groceries at Loblaws, nor do banks accept macroeconomic indicators in lieu of a mortgage payment. And it doesn’t matter if the economy is doing great overall, if rising inequality means the middle class is left behind.

And this is how we end up in dangerous times, in ways already well understood by Aristotle some 2600 years ago. The unhappiness is palpable. This drives people to political extremism. Yet all too often, those with the power to do something about it just congratulate themselves on an economy doing great, and express incomprehension when confronted with dissatisfied voters. Must be bad messaging, they say. Perhaps foreign interference. Stupid people falling for populism.

All of the above exists of course. But the root cause, I think, is much simpler: For most voters, the economy (the economy that they experience paycheck-to-paycheck, the economy they experience at the grocery store checkout counter, at the bank when trying to get a mortgage) is not doing great. In fact, it is doing terribly. And they are getting really pissed off about it. Which of course means fertile ground for political populism.