How I Rewired My Brain to Become Fluent in Math

Barbara Oakley in Nautilus:

I was a wayward kid who grew up on the literary side of life, treating math and science as if they were pustules from the plague. So it’s a little strange how I’ve ended up now—someone who dances daily with triple integrals, Fourier transforms, and that crown jewel of mathematics, Euler’s equation. It’s hard to believe I’ve flipped from a virtually congenital math-phobe to a professor of engineering. One day, one of my students asked me how I did it—how I changed my brain. I wanted to answer Hell—with lots of difficulty! After all, I’d flunked my way through elementary, middle, and high school math and science. In fact, I didn’t start studying remedial math until I left the Army at age 26. If there were a textbook example of the potential for adult neural plasticity, I’d be Exhibit A.

Learning math and then science as an adult gave me passage into the empowering world of engineering. But these hard-won, adult-age changes in my brain have also given me an insider’s perspective on the neuroplasticity that underlies adult learning. Fortunately, my doctoral training in systems engineering—tying together the big picture of different STEM (Science, Technology, Engineering, Math) disciplines—and then my later research and writing focusing on how humans think have helped me make sense of recent advances in neuroscience and cognitive psychology related to learning.

In the years since I received my doctorate, thousands of students have swept through my classrooms—students who have been reared in elementary school and high school to believe that understanding math through active discussion is the talisman of learning. If you can explain what you’ve learned to others, perhaps drawing them a picture, the thinking goes, you must understand it.

More here.



Wednesday Poem

Monument Valley, 2050

East Mitten: The crowds have left.
West Mitten: They won’t be back.

East Mitten: Seems darker now.
West Mitten: I see more stars.

East Mitten: It’s quiet too.
West Mitten: The hum is gone.

East Mitten: The dust has settled.
West Mitten: For good, it seems.

East Mitten: They’re really gone?
West Mitten: They are no more.

East Mitten: Just you and me?
West Mitten: Back to eternity

by Brooks Riley
.

Tuesday, July 16, 2019

Sheldon Lee Glashow remembers Murray Gell-Mann

Sheldon Lee Glashow in Inference Review:

Murray Gell-Mann

I first encountered Gell-Mann in the spring of 1959, when he invited me to describe my work at a seminar in Paris. Having completed my Harvard thesis with Julian Schwinger, I was spending my first postdoctoral year in Copenhagen at what would become known as the Niels Bohr Institute. Gell-Mann was on sabbatical at the Collège de France. Not yet 30, he was already a renowned theorist. Among much else, he had explained the puzzling features of what were called strange particles. Gell-Mann proposed a new particle attribute S, which he called strangeness. He assumed it to be conserved by the strong nuclear force but not by the weak.1 Ordinary particles, like protons and neutrons, have no strangeness, whereas strange particles are variously assigned S = ±1 or ±2. They can be produced copiously by energetic particle collisions, but always two at a time and never singly. Their lifetimes are so unexpectedly long because their decays necessarily involve the weak force. Puzzle solved!

After my seminar, Gell-Mann invited me to a tête-à-tête dinner at a two-star Michelin restaurant, where I was cured of my lifelong aversion to fish as food. Gell-Mann seemed to appreciate my algebraic explanation for the universality of weak and electromagnetic coupling strengths. He presented my ideas, duly crediting me, at the 1959 International Conference on Elementary Particle Physics in Kiev, which I, being a mere postdoc, could not attend.

A year later, as my two-year National Science Foundation fellowship was running out, I was surprised and delighted to receive an invitation from Gell-Mann to spend a third postdoctoral year at Caltech. I accepted immediately: to learn from such luminaries as Richard Feynman and Gell-Mann, to enjoy California’s warm weather, and because I had few alternatives.

More here.

What does it mean to be genetically Jewish?

Oscar Schwartz in The Guardian:

This genetic explanation of my Ashkenazi Jewish ancestry came as no surprise. According to family lore, my forebears lived in small towns and villages in eastern Europe for at least a few hundred years, where they kept their traditions and married within the community, up until the Holocaust, when they were either murdered or dispersed.

But still, there was something disconcerting about our Jewishness being “confirmed” by a biological test. After all, the reason my grandparents had to leave the towns and villages of their ancestors was because of ethno-nationalism emboldened by a racialized conception of Jewishness as something that exists “in the blood”.

The raw memory of this racism made any suggestion of Jewish ethnicity slightly taboo in my family. If I ever mentioned that someone “looked Jewish” my grandmother would respond, “Oh really? And what exactly does a Jew look like?” Yet evidently, this wariness of ethnic categorization didn’t stop my parents from sending swab samples from the inside of their cheeks off to a direct-to-consumer genetic testing company. The idea of having an ancient identity “confirmed” by modern science was too alluring.

More here.

A 1995 William H. Gass Novel Predicted Trump’s America

Alec Nevala-Lee in the New York Times:

William Gass in 1969.

“Consider how the titles of tyrants change,” the historian William Frederick Kohler once wrote. “We shall suffer no more Emperors, Kings, Czars, Shahs or Caesars, to lop off our limbs and burn our homes, kiddo, defile our women and bugger our boys; the masses make such appointments now; the masses love tyranny; they demand it; they dance to it; they feel that their hand is forming the First Citizen’s Fist; so we shall murder more modestly in future: beneath the banners of ‘Il Duce,’ ‘Der Führer,’ the General Secretary or the Party Chairman, the C.E.O. of something. I suspect that the first dictator of this country will be called Coach.”

Kohler’s words seem especially resonant today, and their power is undiminished by the fact that their author exists only as a character in a novel by William H. Gass. Gass, who died in 2017 at the age of 93, began working on “The Tunnel” in the late 1960s, and he finished it a quarter of a century later, when it was published by Alfred A. Knopf. Even under the best of circumstances, this plotless book of over 600 pages would have been one of the least commercial novels ever released by a major publishing house, and it had the additional misfortune of appearing halfway through a decade that was uniquely unprepared for its despairing vision of America. The critic Robert Kelly wrote in The Times Book Review: “It will be years before we know what to make of it.”

More here.

The Art of Aphorism

Adam Gopnik in The New Yorker:

Almost all books of aphorisms, which have ever acquired a reputation, have retained it,” John Stuart Mill wrote in 1837, aphoristically—that is to say, with a neat if slightly dubious finality. (“How wofully the reverse is the case with systems of philosophy,” he added.) We prefer collections of aphorisms over big books of philosophy, Mill thought, not just because the contents are always short and usually funny but because the aphorism is, in its algebraic abbreviation, a micro-model of empirical inquiry. Mill noted that “to be unsystematic is of the essence of all truths which rest on specific experiment,” and that there is, in a good aphorism, “generally truth, or a bold approach to some truth.” So when La Rochefoucauld writes, “In the misfortune of even our best friends, there is something that does not displease us,” he is offering not a moral injunction saying “Take pleasure in the misfortune of your best friends” but a testable observation about what Mill termed “the workings of habitual selfishness in the human breast.” The aphorism means: We do take pleasure—not in every case, perhaps, but more often than we might admit—in the misfortune of our best friends.

We don’t absorb aphorisms as esoteric wisdom; we test them against our own experience. The empirical test of the aphorism takes the form first of laughter and then of longevity, and its confidential tone makes it candid, not cynical. Aphorisms live because they contain human truth, as Mill saw, and reach across barriers of class and era. “Old men delight in giving good advice as a consolation for the fact that they can no longer set bad examples,” another La Rochefoucauld classic, is not only humorous in its tidy reversal; it is also still rather persuasive, as we watch the drift from rebelliousness to reaction in every generation.

Aphorisms come at us in so many forms and from so many periods that one might think an academic study of aphorisms would aim to give them a family tree—tracing the emergence of the humanistic aphorism from its solemn white-bearded grandfather, the proverb; the descent of the clever, provocative epigram from its sly guerrilla progenitor, the parable (the form that allowed Jesus to spread subversion while seeming merely obscurely elegant). And then we might learn how those later forms have spawned such contemporary commercial descendants as the one-liner and the meme.

More here.

Maternal secrets of our earliest ancestors unlocked

From Phys.Org:

Extended parental care is considered one of the hallmarks of human evolution. A stunning new research result published today in Nature reveals for the first time the parenting habits of one of our earliest extinct ancestors.

Analysis of more than two-million-year-old teeth from Australopithecus africanus fossils found in South Africa have revealed that infants were breastfed continuously from birth to about one year of age. Nursing appears to continue in a cyclical pattern in the early years for infants; seasonal changes and food shortages caused the mother to supplement gathered foods with breastmilk. An international research team led by Dr. Renaud Joannes-Boyau of Southern Cross University, and by Dr. Luca Fiorenza and Dr. Justin W. Adams from Monash University, published the details of their research into the species in Nature today.

“For the first time, we gained new insight into the way our ancestors raised their young, and how mothers had to supplement solid food intake with breastmilk when resources were scarce,” said geochemist Dr. Joannes-Boyau from the Geoarchaeology and Archaeometry Research Group (GARG) at Southern Cross University.

More here.

Tuesday Poem

Claude Monet, Argenteuil, 1875

It was a lot of things.
It was the algae blooms swimming against the tide.
It was the convent of masts, making partial signs of the cross across the sky’s chest.
The eyes & brow suspended in clouds passing.
You could almost feel the dew on the nose
of the bows
………………………………….quivering.
………………………………………………………………………..I know the sun,
tinged red, sat somewhere above the blue, burning
into the day.

It was a thousand miles ago,
& now I can only imagine
those deep December nights in Ohio.
Selling the house. Coming to visit you, frail
& fevered pressing your cold hands together & together
watching the dancers across the street
in the one room studio.

Each night, the same couple
curving over the hardwood, knees bent …  bending
lead & follow, chest to chest, smooth
…………………………………………………… then slow slow.

I think of the night you whispered
how you wanted just one more
summer. Just one more chance to see the geese
floating through the ravine. The deer
in the middle of the rain-kissed leaves.

The tiny Monet postcard in white frame on the nightstand.
“I’d like to go there,” you said. Your hand crumpling
around a tissue.

Calls were made. Come now.
Come get your goodbyes. Come touch
each light blue bead of the rosary with us,
passing it gently
through the calm of our fingers.

That night,
I stepped outside onto the wet black brick of the patio,
blew smoke
…………… under the glow of the yellow bulb & noticed him

across the street, locking the front door of the studio.
…………………………………………………………………………. He turned,

looked me in the eyes
offered a short nod as I stood
still as a fawn
scarved in the steam of its own breath.

The snow staring back into us
like white on a cloud.

by Adam J. Gellings
from The Ecotheo Review

Sunday, July 14, 2019

Before the Shaking Starts: Living in the shadow of Utah’s next big earthquake

Trevor Quirk in Guernica:

We chased the fault line south of Salt Lake City, just past the Cottonwood Canyons, to a small ridge that overlooked a reservoir as silver as the sky. It was October, during a cold drizzle, and the sun was lofted behind the clouds like a shineless mothball. My brother, a Ph.D. student in geology, explained that what appeared to me as indistinct knolls and dips were “expressions” where the fault had deformed the Earth above it. I had spent the day looking at the ground or aiming my eye down my brother’s extended arm to identify subtleties like this. When my gaze finally returned to the Wasatch Mountains, the vision was fresh and horrifying. They were monster-like, tyratnnizing the skyline with their beauty. Under their jagged eminence, my brother and I felt burdened with our knowledge of the region’s fate.

Earthquakes had invaded my dreaming. I sometimes lay awake, panicked by the slightest tremble of my nightstand or groan from the innards of my home. I pictured the Earth shattering in twilight, then, in seconds, my girlfriend and me struggling to breathe under the rubble of our house. Our dog squealing. Distant sirens echoing through the old neighborhoods south of the city. The Wasatch Front, a regional section of the larger Wasatch Range which carves and rolls from Utah into Idaho, is due for an earthquake that will dwarf the quakes of Utah’s last century—at least 7 on the moment magnitude scale.

More here.

A Separate Kind of Intelligence: A Talk By Alison Gopnik

Alison Gopnik at Edge:

Everyone knows that Turing talked about the imitation game as a way of trying to figure out whether a system is intelligent or not, but what people often don’t appreciate is that in the very same paper, about three paragraphs after the part that everybody quotes, he said, wait a minute, maybe this is the completely wrong track. In fact, what he said was, “Instead of trying to produce a program to simulate the adult mind, why not rather try to produce one which simulates the child?” Then he gives a bunch of examples of how that could be done.

For several years I’ve been pointing to that quote because everybody stops reading after the first section. I was searching at lunch to make sure that I got the quote right, and I discovered that when you Google this, you now come up with a whole bunch of examples of people saying that this is the thing you should be quoting from Turing. There’s a reason for that, which is that the explosion of machine learning as a basis for the new AI has made people appreciate the fact that if you’re interested in systems that are going to learn about the external world, the system that we know of that does that better than anything else is a human child.

More here.

Overdosing in Appalachia

Lesly-Marie Buer in the Boston Review:

In 2017, for the second time in recent years, U.S. life expectancy decreased. Headlines blamed the decline on suicides and opioids, and cast impoverished rural whites as the primary victims. A great deal of attention has been focused on Appalachia, whose population is (erroneously) portrayed as uniformly white, poor, and ravaged by drug addiction. White sickness has thus come to stand for what is supposedly wrong with health, health care, and culture in the United States.

The truth is not so simple. Black mortality rates continue to dwarf those of whites—another tragic indication of how our society has normalized racial inequality. In West Virginia, the state with the highest overdose death rate, the rate of overdose among blacks is slightly higher than among whites. In Tennessee, whites fare worse than blacks, but maybe not for long: from 2008 to 2016, the overdose mortality rate more than quadrupled among blacks compared to about a doubling among whites. Moreover, mortality rates increased for seven of the ten leading causes of death, with the highest percentage increase seen in influenza and pneumonia. Drug addiction, then, is not the easy explanation we have made it out to be. Income inequality, loss of social safety net services, and state violence against communities of color are also massive problems, a conclusion borne out by a large body of research. But by only focusing on class—those poor white Appalachians—most media reports ignore the racism, xenophobia, and LGBTQ discrimination found in every aspect of the U.S. health care system, from medical research to bedside care.

More here.

Why Do We Resist Knowledge? An Interview with Åsa Wikforss

David Maclean at the IAI:

Your new project examines a particular type of irrationality in the form of ‘knowledge resistance’. Could you offer an explanation of what knowledge resistance is and what sets it apart from mere ignorance? 

Ignorance involves having a false belief, or no belief at all, on a topic. This can be the result of a simple lack of information. In that case, as soon as we read up on the topic we have knowledge. What distinguishes knowledge resistance, by contrast, is that it cannot be fixed by supplying information. It is, as it were, a type of ignorance that is not easily cured.

Knowledge resistance is a matter of believing what one wants to believe rather than what one has evidence to believe – it is a matter of resisting information, rather than taking it in. This happens to all of us, from time to time, and it has a variety of psychological causes. It may be that I hold a cherished belief about being an excellent driver (most people do) even though the evidence points the other way. Or it may be that I love my wine and have a hard time accepting research showing that wine causes cancer. 

A common cause of knowledge resistance is identity protection. This happens when we hold a belief that is central to our cultural or ideological identity.

More here.

Oscar Wilde Temple, Studio Voltaire

Leon Craig in The White Review:

The light is dim, the air richly scented. Little purple tea lights flicker in the votive candle rack and the walls are decorated with twining sunflowers, exuberant passionflowers and several canvases of blousy green carnations monogrammed with Oscar Wilde’s prisoner ID number C.3.3. The Temple is a deconsecrated church with an attractive dark wood ceiling and matching antique chairs. A half-size marble statue of Wilde presides. The artists, McDermott and McGough, have painted various icons spelling out pejoratives such as ‘pansy’, ‘faggot’ and ‘cocksucker’, adorned with gold leaf and richly-coloured paint. Towards the back are intricate woodcut-style depictions of massacres with titles like ‘Nun Cutting Rope of Dead Homeric’, black canvases with cut-out fatality statistics, and monochrome portraits of individuals more recently killed by homophobia and transphobia, such as Justin Fashanu, Brandon Teena and Marsha P. Johnson. A placard in the hallway spells out all of the bigotries the temple stands against, ending with the instruction ‘only love here’. Opposite is a purpose-built offertory box ‘For the Sons and Daughters of Oscar Wilde’.

The Temple’s hosts, Studio Voltaire, emphasise its role as a community venue for LGBTQ+ people and their allies. The Temple is open to any members of the public who wish to visit. It is also a venue for LGBTQ+ wedding ceremonies and discussion groups, as well as a mentoring scheme for young people in partnership with the homelessness charity The Albert Kennedy Trust. Wilde’s fame and the high drama of his story – the libel suit he brought against his lover Lord Alfred Douglas’s father for calling him a sodomite, his subsequent prosecution for gross indecency, his miserable years in prison and premature death in exile in France – are instrumentalised by McDermott and McGough as something for everyone to rally around.

More here.

An American in Darwin’s family

Gwen Raverat in Spectator:

In the spring of 1883 my mother, Maud Du Puy, came from America to spend the summer in Cambridge with her aunt, Mrs Jebb. She was nearly 22, and had never been abroad before; pretty, affectionate, self-willed, and sociable; but not at all a flirt. Indeed her sisters considered her rather stiff with young men. She was very fresh and innocent, something of a Puritan, and with her strong character, was clearly destined for matriarchy.

The Jebbs, my great-uncle Dick, and my great-aunt Cara, lived at Springfield, at the southern end of the Backs, and their house looked across Queens’ Green to the elms behind Queens’ College. Uncle Dick was later to be Sir Richard Jebb, OM, MP, Professor of Greek at Cambridge, and all the rest of it; but, at that time, he held the chair of Greek at Glasgow, and so had been obliged to resign his Trinity fellowship and the post of Public Orator at Cambridge. However the Jebbs spent only the winters in Glasgow, and kept on their Cambridge house for the summers, while they waited hopefully for old Dr Kennedy to retire, so that Uncle Dick might succeed him in the Cambridge Professorship. This was the Dr Kennedy who wrote the Latin Grammar, which we all knew very well in our youth, and he had not the slightest intention of retiring; neither was it by any means so certain as the Jebbs chose to consider it, that the succession would fall to Uncle Dick. However, after keeping them waiting for 13 years, Dr Kennedy died in 1889, and Uncle Dick came into his kingdom at last.

The earliest Cambridge that I can remember must have been seen by me in reflection from my mother’s mind, for it is the same picture as that which she draws in a series of artless letters, written to her family in Philadelphia in this summer of 1883, two years before I was born.

Note: This excerpt is from Gwen Raverat’s Period Piece, available in a cloth-bound hardback Plain Foxed Edition of 2,000 copies from Foxed Editions.

More here.

Sunday Poem

Salt

I have seen many red nights and purple
evenings taut with cold and winterlight,
and afternoons yellow with ripe leaves,
but I have never seen the Northern Lights
or a comet shower or an alien or a desert crossing
from Mexico, people loping like coyotes
in the floodlight-silver night.
Although there was an evening when rounding a bend
on a river walk in London I saw a heron lift off
and slice the silence with its snakelike head,
all wings and feathers and lapping water.
A crepuscular light, brittle like a saltine, and oh, the salt.

by Chris Abani
from
Narrative Magazine

Saturday, July 13, 2019

In defence of antidepressants

Vasco M Barreto in Aeon:

It is obvious that the discomfort I once felt over taking antidepressants echoed a lingering, deeply ideological societal mistrust. Articles in the consumer press continue to feed that mistrust. The benefit is ‘mostly modest’, a flawed analysis in The New York Times told us in 2018. A widely shared YouTube video asked whether the meds work at all. And even an essay on Aeon this year claims: ‘Depression is a very complex disorder and we simply have no good evidence that antidepressants help sufferers to improve.’

The message is amplified by an abundance of poor information circulating online about antidepressants in an age of echo chambers and rising irrationality. Although hard to measure, the end result is probably tragic since the ideology against antidepressants keeps those in pain from seeking and sticking to the best available treatment, as once happened to me. Although I am a research scientist, I work on topics unrelated to brain diseases, and my research is not funded by the ‘pharma industry’ – the disclaimer feels silly but, trust me, it is needed. I write here mainly as a citizen interested in this topic. I take for granted that a world without depression would be a better place, and that finding a cure for this disease is a noble pursuit. Without a cure, the best treatment available is better than none at all.

More here.