Rul, rul, lad ragnarocken gå

Forleden var vi på Ragnarock, et rockmuseum i Roskilde.

Rock og rock. En af udstillingerne gik tilbage til 1920’erne.

Men i hvert fald. Musik! Gæt et årstal.

Et fascinerende indslag var, at musikfans er fans på en for os genkendelig måde. Fans af Metallica laver et fanzine. Birthe skriver fanfic om Beatles. Emil laver Jackson-cosplay.

Selvfølgelig er der en souvenirshop. Helt bemærkelsesværdigt, så er der ikke en lille havfrue nogen steder. Til gengæld er der en hel sektion om Beatles. Hvor Dylan lige får sneget sig ind.

Are things getting better?

According to Ada Palmer, yes. But slowly. And sometimes good things have bad consequences for a while.

I’d like to quote chapters 66 and 67 from Inventing the Renaissance in their entirety, but that’s probably not within fair use etc. Let me try to pick some good quotes.


So when I hear, Has social progress failed? my zoomed-in self, my scared self living in these terrifying years, does feel afraid, but my zoomed-out self, my historian self, answers easily. Progress has done wonders! But it has also done what all change does in a dynamic system: had complicated consequences. Petrarch, Bacon, Marie Curie, all added something to the fish tank with many results. The same celebration of classical education which popularized the Platonic idea that sometimes humble parents produced kids with souls of gold both resulted in the Enlightenment ideal of universal equality, and fed the no columns, no culture side of European supremacy which enabled the atrocities of colonialism.

But if the consequences of our actions are completely unpredictable, would it be better to say that change over time is real, but that anything like human-controlled progress is an illusion?

No.

Why?

Because my mother’s cataract surgery—after 2,000 years of practice—saved her sight.

Because some of our civil rights have come by blood and war, but more recently more and more have come by negotiation and agreement.

Because my students who burn down imaginary Europe every year understand better afterward how to avoid collateral damage, and avoid burning things down in their own world. A lot of them even volunteer to come help with the next simulation, advising their peers on how to see the patterns, giving advice much more prudent than when they braved 1492’s Scylla and Charybdis the first time.


We have achieved some of what Machiavelli and Bacon wanted: a new method to make the next generation’s experience on this Earth a little better, and to help us avoid those moments when we lose so much so quickly.


Plague wasn’t the Horseman of the Apocalypse Petrarch hoped to defeat, but the man whose Remedies Against Fortune offered consolation, even for those who lose their homelands to war, would weep such happy tears to hear the plague for which he had no consolation is defeatable.


There was a baby in the bathwater of Whig history. We can find metrics for comparing times and places which don’t privilege particular ideologies. Metrics like infant mortality. Metrics like malnutrition. Metrics like the frequency of massacres. As I said, one of my favorite questions to ask an era is: What portion of the population can be murdered by a different portion and have the murderer suffer no meaningful consequences? The answer, in my homeland of America today, is not zero percent, but it’s not ninety percent, the way it was in the patronage-dominated Renaissance, when Benvenuto Cellini could stab you in the back and, if he’s working for the pope, there won’t be justice. That is progress. That, and infant mortality, and the conquest of smallpox, and soon of polio, and broadening access to education, these are genuine improvements of the sort the Try Everything Age believed would come if they kept striving to reveal the secret motions of things.


Progress is not inevitable, but it is happening.
It is not safe, but it is beneficial.
It is not linear, but it is ongoing.
It is not simple, but it can be studied.
It is not controllable, but it is us. In fact, it is nothing but us.


I mentioned earlier a debate, in the History Lab, between my friends Chris Celenza and Rocco Rubini, about whether Machiavelli is a modern man. Chris had just published his biography of Machiavelli, and he, much like me, described Machiavelli as the product of a desperate time, shaped by the profoundly un-modern violences and chaos of his day. Rocco objected that there are more murders in Chicago now than in Florence back then, so does the violence really make Old Nick un-modern? It is an important question, especially since so much of our own era’s daily violence tends to be erased or pushed off-camera, so to speak, by the social apparati which perpetuate it (racism, systemic inequality), in contrast with the grim glitter of Renaissance violence which TV dramas love to magnify. But there are also differences. It would have been easy for Chris to cite population, to say modern Chicago has thirty times the population of 1500s Florence, that our bloodshed is proportionately smaller. But Chris didn’t. Instead, pausing, smiling warmly, thinking through, Chris answered that we today believe the murder rate in Chicago is not acceptable, or natural, or immovable, that we believe we can fix it if we study and try, that we aspire to change it for the better. That we feel a humane duty to do better. Machiavelli didn’t think that was possible.


The year 2020 was the first time this planet faced a pandemic knowing what it is, and how to act. Forget 1348, even in 1918 we didn’t understand how influenza moved, and hand washing was still controversial. We didn’t take perfect action with COVID, and we should be condemning the failures, but I’m not just a historian of the plague of 1348, I’m a historian of the plagues of 1435, 1485, 1494, 1503, 1596, 1630, and 1656, those many generations who lived without hope that it could ever stop. We do have hope. Within two years we learned how to treat and vaccinate, achievements any other age in history would hail as miracles.


We also know about mental health now. We’re studying the mental health costs of pandemic, poverty, racial injustice, fear. The concept of mental health alone empowers us, as do related concepts: social safety net, welfare, social services, tools for thinking about how society can put structures in place to relieve suffering. There were social services in 1348, hospitals, city grain supplies, orphanages, but Florence’s public health response to the Black Death was to double the fine for selling meat from male and female animals in the same butcher’s booth, thinking that the mix of generative juices birthed disease. In Florence’s orphanage there hangs a painting by Michelangelo’s teacher Ghirlandaio, an Adoration of the Magi with the Virgin and Child and city’s patron John the Baptist, all surrounded by the Innocenti, dead babies and toddlers from the Massacre of the Innocents, tiny kids still in their swaddling clothes standing among the city’s patrons in poses of power—they’re there as role models to teach the orphans how to imagine their dead friends still watching over them, and how to imagine their place in the world after their deaths, since most of these kids would not survive to leave the orphanage. Our child services are far from perfect, but we aim higher than preparing kids for death.


Some say of science that Bacon built the scaffolding and Newton raised the cathedral, but it wasn’t as quick as that. Petrarch’s generation started us gathering materials, precious libraries, making worldly and social questions central to human inquiry at last. A century later, Machiavelli laid out the foundations, proposing a new way of using those libraries, and challenged the myth that there was nothing to be learned from that long, ever-changing Middle Age that followed Rome. Century three, Thomas Hobbes was starting on the ground floor, mixing Machiavelli with Bacon’s empiricism and social analysis. A century later Enlightenment voices—Voltaire, Beccaria, Montesquieu, dear Diderot—raised the upper sections of the wall, convincing people and nations to try changing their world on a large scale. It took another 100 years to realize big social experiments often had collateral damage, and readjust those upper sections to be safer and better, so they didn’t make the rain runoff flood other parts of town. Hope of a golden age to live in is still underway: it’s our job now to do the hardest part and build the dome. It took a long time to raise this cathedral, to get from Italia Mia via The Prince and the New Organon to RNA vaccines, but it’s the same project. Will we do it perfectly? No. Will we finish in our lifetimes and enjoy our golden age? No. We will add our layer to the structure, but there’s more to come, the trim, the lantern and the ball on top. Florence’s cathedral, begun 1296, is still not done today. But it is a wonder, as is every hand that helped to build it. We have tools in our hands now—tools that Machiavelli, Petrarch, and Alessandra Scala would have given anything to have. We can aim for better than the Renaissance, which is what our Renaissance friends did too.

Let’s try.

Science fiction predictions XXVII

Foreword, Battlefield Earth, L. Ron Hubbard.

“Science fiction does not come after the face of a scientific discovery or development. It is the herald of possibility. It is the plea that someone should work on the future. Yet it is not prophecy. It is the dream that precedes the dawn when the inventor or scientist awakens and goes to his books or his lab saying, “I wonder whether I could make that dream come true in the world of real science.” “

Carry the one

If you want to compare 2 large numbers, and remember to carry the one(s), this is how you do it.

First row in the table below: Our units. In the middle, there’s a familiar system: 1, 10, 100. This is how our own numbers are constructed. There’s a position for 1s, a position for 10s, etc. To the left and to the right, the units are not the familiar ones, but hopefully we can understand this anyway.

Second row: A sum of a lot of other numbers. The sum hasn’t been normalized to its shortest from yet. We want to normalize and then compare with the last row, another number from the same source.

Normalization example: In the second row, 15 and 15 are bolded. The jump from the first to the second column is to multiply by 2. (1/120 * 2 = 1/60.) So to normalize, we look at the first 15 and divide by 2.

  • a = 1/120, b = 1/60
  • 2a = b
  • 15/2 = 7.5
  • 15 = 1 + 7 * 2
    • 15a + 15b
    • = (1 + 7 * 2)a + 15b
    • = a + 7 * 2a + 15b
    • = a + 7b + 15b
    • = a + 22b

So in the next row, instead of 15 and 15, we have 1 and 22.

Move to the next pair of columns and repeat.

1/1201/601/301/101/5110100300300018000
1515241419263911785
122241419263911785
10351419263911785
1022519263911785
102131263911785
10211323911785
1021124211785
102112215785
102112201285
10211220295
10211220236
10211221136

And yes, the end result is, that the 2 numbers aren’t quite the same.

Background: Recently I read this, in From One to Zero, Georges Ifrah :

Science fiction predictions XXVI

“The Discovery of the Future” , Robert A. Heinlein.

“Phrases like “There’ll always be an England” are pleasant and inspiring at the present time, but we know better. There won’t always be an England, nor a Germany, nor a United States, a Baptist Church, nor monogamy, nor the Democratic Party, nor the modesty taboo, nor the superiority of the white race, nor airplanes. Nor automobiles. They will go. They will be gone-we’ll see them go. Any custom, institution, belief, or social structure that we see around us today will change, will pass, and most of those we will see change and pass.

In science fiction, we try to envision what those changes might be. Our guesses are usually wrong; they are almost certain to be wrong. Some men, with a greater grasp on data than others, can do remarkably well. H. G. Wells, who probably knows more (on the order of ten times as much, or perhaps higher) than most science fiction writers, has been remarkably successful in some of his predictions. Most of us aren’t that lucky;

I do not expect my so-called History of the Future to come to pass. I think some of the trends in it may show up, but I do not think that my factual predictions as such are going to come to pass, even in their broad outlines.”

“I have never been able to understand quite why it is that the historical novel is the most approved, the most sacred form of literature. The contemporary novel is next so; but the historical novel, if you write an historical novel, that’s literature.

I think that the corniest tripe published in a science fiction magazine (and some of it isn’t too hot, we know that; some of my stuff isn’t so hot) beats all of the Anthony Adverses and Gone With the Winds that were ever published, because at least it does include that one distinctly human-like attempt to predict the future.”

Hvis krop er det egentlig?

Jeg har læst “0wnz0red”/”Din kr0p er v0res”, #CoryDoctorow. Quick fix. Spoilers.

Nogen har udviklet et stykke software, der via passende kabler kan styre alt muligt i en krop: niveau af serotonin, stofskifte, smertetærskel osv. Med lidt kreativitet kan man også opfinde en kur mod en given sygdom. Og hvad så?

En af hovedpersonerne forestiller sig, at man kan putte en masse af det her software i en virus, der på længere sigt vil smitte alle. Nogle fordele vil indtræffe med det samme, andre kræver en lille computer ved siden af, så man selv kan skrue op og ned for tingene. Igen på længere sigt vil den blive billig, så alle kan få en. Voila! Fysisk og psykisk sundhed til alle, og i forbifarten også en slat penge til vores helt.

Vi ser noget af det virke ret godt hos nogle få personer. Det er ikke klart, hvordan effekten i sidste ende vil være på samfundet, men jeg gætter på positiv.

Scroggs, day 7

A new December and a new bunch of puzzles from mscroggs.co.uk.

The circle all around is 360°.

The angle to the minute hand, corresponding to 22 minutes is 360 * 22/60 = 132.

The angle to the hour hand, going clockwise, corresponding to 8 hours and 22 minutes is 360 * (8 + 22/60) / 12 = 251.

The angle between the hands is 251 – 132 = 119.

#ThisWeeksFiddler, 20241213

This week the question is: Can You Survive “The Floor”?

… Let’s consider a slightly simplified version of The Floor with nine contestants on a 3×3 square grid. Each round of the game consists of the following steps:

  • One of the remaining contestants is chosen at random. (Note that each contestant is equally likely to be chosen, regardless of how many squares they currently control.)
  • The set of eligible opponents for this contestant is anyone whose territory shares a common edge with the contestant. One of these eligible opponents is chosen at random. (Again, all eligible opponents are equally likely to be chosen, regardless of how many squares they control or how many edges they have in common with the opponent.)
  • The contestant and their selected opponent have a duel, each with a 50 percent chance of winning. The loser is eliminated, and their territory is added to that of the winner.

These rounds repeat until one contestant remains, and that contestant is the overall winner.

You are a contestant on a new season of this 3×3 version of The Floor. The nine positions on the grid are shown below:

Which position would you choose? That is, which position or positions give you the best chance of being the overall winner?

And for extra credit:

Again, a new season of the 3×3 version of The Floor (as described above) is about to begin.

What is your probability of winning for each of the nine starting positions?

Highlight to reveal (possibly incorrect) solution:

Program. Numbers.