Friday Links

When it comes to Gottfried Leibniz (1646-1716), I do a lot of gushing.

We have maintained that cryptocurrencies do have a fundamental value, arising principally from their ability to potentially provide greater privacy and anonymity compared to the conventional banking system. But that feature is difficult to value, which makes cryptocurrency exchange rates volatile and subject to bubbles. In addition, that very feature makes these assets desirable for the conduct of illegal activities, which is likely to invite increasing surveillance and regulation. In turn, those controls will work to reduce the value of cryptocurrencies, not only for use in illicit transactions, but for legitimate users as well.

“One of the problems we face as scholars of lying is that everybody thinks they know how lying works,” says Hartwig, who coauthored a study of nonverbal cues to lying in the Annual Review of Psychology. Such overconfidence has led to serious miscarriages of justice, as Tankleff and Deskovic know all too well. “The mistakes of lie detection are costly to society and people victimized by misjudgments,” says Hartwig. “The stakes are really high.”

We have learned since [2008] that the present generation of economists has not figured out how the economy works …

The journal’s first issue was published recently and it contains 10 button-pushing essays that supply answers to questions including whether it’s OK to commit violence in order to save animals (yes), whether criminals should be be placed in medically induced comas (maybe), and whether in the end our lives have any meaning at all (no).

“I think this is good for a lot of us math teachers because it’s forced us to rethink what assessments are supposed to accomplish,” said Matthew Rector, a math teacher and department chair at Grant Union High School in Sacramento. “In the past, most of us have thought about assessments as ranking tools—give a kid a grade and move on. Assessments should be about moving mathematical knowledge forward.”

By the 1930s, the UCI had some reasons to be skittish about technological changes to the bicycle. The authors write that it was under pressure from bike manufacturers, which were ramping up production of safety bicycles to satisfy a growing Depression-era demand for cheap transportation.

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“Together, these findings illustrate that the most common approach to diversity in higher education ironically reflects the preferences, and privileges the outcomes, of White Americans,” the study notes.

What must one believe in to be willing to borrow tens of thousands of dollars in order to pursue a certification of completion — a B.A.? What would a college have to promise in order to compel someone to do that? What would a bank have to believe to extend this person credit? Or the U.S. government, to guarantee such loans en masse — now roughly $2 trillion? And what would a society have to believe to sustain the system that keeps it all going?

"On 'snow days' or days when school buildings are closed due to an emergency, all students and families should plan on participating in remote learning," the NYC Department of Education said.

Two 19th century Belgian bibliographers heard about the Dewey Decimal System and asked to translate it into French. But rather than slavishly follow Dewey, they added some significant twists. Their system, first published in 1905 and still used today, is known as the Universal Decimal Classification.

The truth is the question of whether student debt should be canceled is largely irrelevant. Most student debt will be canceled sooner or later, because an ever-growing share of borrowers cannot possibly repay their loans. Ever. The only question that matters is whether President Biden and Democrats in Congress can grapple with reality and fix America's colossally stupid system of funding higher education.

Effectively, the IDR program (whose enrollment has grown steadily to about a fifth of borrowers) is a tacit admission that most student loans are never going to be paid off in full. Those who have not enrolled have seen far higher rates of default; on current trends most borrowers will be in IDR eventually, which is rapidly becoming a kind of ad hoc bankruptcy program for student borrowers. In a sense, the U.S. is starting to fund its higher education system with a payroll tax on people who go to college but are too poor to pay for it out of pocket — except we then force them to sit under an enormous load of basically imaginary debt for decades while doing it. This damages their credit, making it harder to get a job, a house, a car, and so on.

Friday Links

By 1941, the Russian dandelion, Taraxacum koksaghyz, supplied 30% of the USSR's rubber. During the Second World War, shortages of Havea rubber prompted other countries, including the United States, Britain and Germany, to begin cultivating dandelion rubber. Once the war was over and supplies returned to normal, these countries — including, ultimately, the Soviets — switched back to Hevea tree rubber because it was cheaper.

Giving at scale by the super-wealthy has done little to redistribute wealth from rich to poor, helping perpetuate social inequalities rather than remedying them, while paying considerable dividends to donors in the form of privilege and influence in society and politics, new research shows.

Corporal punishment in state schools in the UK was made illegal in 1986. This is the story about how it was eliminated in one Local Education Authority, Oxfordshire, before that.

My dad became CEO of Oxfordshire in 1978. He was young, and opposed corporal punishment, but knew, as he puts it, that “in a time of cuts, if I went to the politicians and asked them for money for canes they’d ask me how many I wanted, and did I want the luxury versions”. So he didn’t talk to them about corporal punishment.

“The toll of death is simply staggering — worse than I would have predicted,” said Arthur Caplan, founding head of the division of medical ethics at the New York University School of Medicine. “Covid has been nothing short of the worst failure of public policy in modern memory.”...

All other causes of death pale in comparison to the coronavirus death toll. So far, the coronavirus has killed roughly three times as many people as accidents, lung ailments, stroke or Alzheimer’s disease did in 2019. And the coronavirus has outpaced the number of deaths from diabetes, kidney disease, pneumonia and suicide by even larger multiples.

Prosecutors who want to hold police accountable should seek the bird in the hand, not the two in the bush. They should select charges in these cases so that conviction is a real possibility and, therefore, a real constraint on future police behavior. One "guilty" verdict on manslaughter will do more to reshape officers' behavioral calculus than an endless stream of "not guilty" decisions on murder.

Bottom line: Many people don’t like needles, and that could further slow vaccination efforts as winter turns to spring when supplies are expected to multiply and efforts to get the hesitant to sign up for a dose will intensify.

“Fear of needles was one of the barriers that was a significant predictor of people saying, ‘I don’t think I will get this vaccine,’” said Jeanine Guidry, an assistant professor at Virginia Commonwealth University who researches visual communication and conducted a survey of 500 people in July.

Mather had learned about inoculation more than a decade earlier, from an African man named Onesimus, whom he enslaved. When he asked if Onesimus had ever had smallpox, the man showed him a scar on his arm and explained that his community in Africa used infected material from one person to inoculate others against the disease. A few years later, Mather read a report from Turkey describing a similar procedure.

I remember last March, about three days into the shutdown when my Facebook newsfeed was filled with hilarious memes from parents who had been home teaching their children for a few days. The memes praised teachers, joked about suspending their own children, and immediately needing a vacation. As I saw these posts, I laughed along with them but thought to myself “this won’t last long”. And how right I was. People got amnesia and quick.

While all viruses find ways to evade the body’s defenses, a growing field of research suggests that the coronavirus unhinges the immune system more profoundly than previously realized.

A billionth of a century is approximately pi seconds. The diameter of the Earth is roughly half a billion inches. (Incidentally, one millionth of a century is about 52 and a half minutes. This microcentury is apparently the optimal time for a lecture: long enough to get into depth and detail; not so long that people fall asleep.)

In our view, as education researchers who specialize in science education, the learning sciences and educational assessment, we see an abundance of reasons to let states off the hook for testing this year....

Unfortunately, national experts and research findings indicate that high-stakes testing does not live up to its promise. Instead, research has shown serious negative side effects.

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“Yeah, they may be effective 95 percent of the time, but what about the experience of being inoculated against the century’s first pandemic?” he continued. “We’re people, not zombie consumers. Each dose should be personalized and special.”

But as John Warner points out in his new polemic Sustainable. Resilient. Free. The Future of Public Higher Education, no-cost public college is neither utopian nor new. Rather, narratives that say college should be expensive, that you should take out debt to pay for it if you don’t have family funding, that it is a private investment in your future, are the historically recent developments.

Harvard researchers estimate it would take about $79 billion per year to make all public colleges and universities free; by contrast, our present debt-leveraged, tuition-dependent Rube Goldberg machine that “subsidizes college attendance” costs the federal government $91 billion every year.

The study team analyzed the effect of education and birth year on differences in memory and verbal fluency among nearly 16,000 participants born between 1930 and 1955. Women had better memory scores overall, which became more significant in the groups born more recently. But in the older birth cohort, women had poorer fluency scores than men. That difference progressively reversed in the groups born later, reported Mikaela Bloomberg, a Ph.D. candidate from University College London. 

The religious basis of the act was explicit: the act stated its intention was to thwart “ye old deluder, Satan” in his goal “to keepe men from the knowledge of ye Scriptures.” To this end, the law required every town with 50 or more families to hire and maintain a teacher to instruct all children in reading and writing.

The first paper, which garnered widespread media coverage, found little evidence that COVID had spread in 17 schools in rural Wisconsin that opened buildings with strict safety procedures.

The other study, which has drawn less attention, found that across Wisconsin as a whole, 5,700 COVID cases were linked to outbreaks in K-12 schools and childcare facilities last fall.

Epidemiologist Theresa Chapple worries that studies that rely on contact tracing all have the same flaw — the lack of systematic “surveillance” testing that would provide a complete picture of virus cases in a school.

In the mid-nineteenth century, cities often had the power to lock kids up in reform schools, against their own and their parents’ objections, without convicting them of any crime. This fell under the general legal precept that “the welfare of the people is the supreme law.”

Secondary market trading is societally unproductive (more on that shortly) and should be discouraged by increasing transaction costs (this is one of the big reasons to push for a financial transactions tax, not for revenue purposes, although that’s a nice side bennie, but to shrink the financial casinos).

Friday Links

Interestingly, hundreds of plant species in sand dunes have evolved sticky surfaces, suggesting utility in that habitat. Windblown sand coats these sticky surfaces – a phenomenon known as psammophory, which means “sand-carrying” in Greek. While a sandy coating may limit light from reaching plant surfaces, it also likely protects plants from abrasion and reflects light, reducing leaf temperature. It also defends plants from hungry predators.

Why isn’t it considered bad behavior to sit in front of a wall of screens filled with flashing numbers making bets on those numbers? Would it attract the cultural scolds if the people making those bets were drinking tall boys in brown bags, rather than sipping bespoke lattes?

Read the latest reports concerning Covid-19 and academia and it has become clear that the inequalities and representation of women have worsened. Women are submitting fewer preprints, dropping enrolments in university programmes, missing from pandemic-related scientific committees, and experiencing pressure during lockdown periods to take on traditional caregiving and domestic responsibilities. These are not simply temporary setbacks, but a call to reflect on longstanding social schemas. What this suggest is, that it is time for research that considers a wider array of variables.

“The joy of games like Hitman for me is that they’re presented with an incredibly straight face, but allow you to do incredibly silly things,” he told Polygon over email. “I’ve previously killed 553 people using only a fish in the game, so it just seemed like a natural progression for the freezer challenge.”

A website that claims to sell ad space for Covid-19 vaccinations has triggered both laughter and existential dread, with many expressing despair over the possibility that the absurd gimmick could actually be real.

There is a right way and a wrong way to do a diet study.  The wrong way is to send a survey to a few thousand people asking them to recall what they eat and linking those responses to outcomes down the road. That’s how we get studies that tell us that eggs kills you, or keep you healthy, or something. The right way is to do what the good folks at the NIH did in this study appearing in Nature Medicine – lock people in a room for 28 days and measure absolutely everything.’

To answer that requires explaining the concept of short selling, which most civilians find nearly incomprehensible. A short sale is a bet that a stock (or any other speculative asset, like bonds or gold) is going to decline in price. But to make that bet, you have to sell something you don’t already own, which is not normal behavior. To accomplish this, you have to borrow the stock from somebody who does own it. As with any loan, you have to pay interest on the borrowed asset. And you also have to keep some collateral on deposit with your broker as an assurance you’re good for the money. The hope is that the price will fall, and you can buy the shares — cover the short, in the jargon — at a lower price. Your profit would be the difference between the original sale price and the closing purchase price, minus any interest paid on the borrowed asset.

But what if you’re wrong, and the price rises? Then you’re in trouble. When you buy a stock, your risk is that you could lose the entire purchase price — but no more. With short selling, if you’re wrong, there’s no predetermined limit to how much you can lose if the price keeps rising. And if the price keeps rising, your broker will demand more collateral in the form of real money. You have a choice between giving up — covering the short and taking the loss — or keep pouring more collateral into a losing position in the hope that things will finally turn your way.

But the researchers wanted to know whether there was a reason for the cats to go wild, beyond pure pleasure. That is when one of the scientists heard about the insect-repelling properties of nepetalactone, which about 2 decades ago was shown to be as good as the famed mosquito-stopper DEET. The researchers hypothesized that when felines in the wild rub on catnip or silver vine, they’re essentially applying an insect repellant.

If you were an adherent of the ceiling view, you might reasonably say, look, even if the effect of income on happiness is linear in the log of income, that’s basically the same as saying it’s not linear in income, and that above some threshold or ceiling you’d need to increase your income by a lot in order to see any substantial increase in happiness.

So you can see why an advocate of the threshold or ceiling view of income satisfaction might be unconvinced that the log-linearity of happiness in income is much to be concerned about. Sure, it’s still growing, but after the initial steep increase in happiness that comes with getting some money, across most of the range of achievable incomes the increase is negligible.

Enslavement in the northern states is often glossed with a statement about how the practice was ended in such and such a year. The reality is more complicated. Emancipation was piecemeal, gradual, and, when it came to visitors from other states and even nations, often ambiguous.

Friday Links

Building a politics around the idea that a college degree is a precondition for dignified work and social esteem has a corrosive effect on democratic life. It devalues the contributions of those without a diploma, fuels prejudice against less-educated members of society, effectively excludes most working people from elective government and provokes political backlash.

Governing well requires not only technocratic expertise but also civic virtue — an ability to deliberate about the common good and to identify with citizens from all walks of life. But history suggests little correlation between the capacity for political judgment and the ability to win admission to elite universities. The notion that “the best and the brightest” are better at governing than their less-credentialed fellow citizens is a myth born of meritocratic hubris.

"An intensely religious person, she once said that “to understand God’s thoughts we must study statistics, for these are the measure of His purpose.”

For hundreds of years, mandatory isolation has been the go-to strategy for stemming the spread of contagious outbreaks. Despite this, the psychological impacts of such a traumatic and destabilizing event are understudied.

Over the last couple of decades, the humanities have often been defended. Too often. Those defenses have been most useful when they have segued into what has also become a thriving field over the same period, a field with much to tell us still: the history of the humanities.

Gordon Reid, president of Stop & Shop, a grocery chain owned by Koninklijke Ahold Delhaize NV, said he expects price to be a challenge for consumers in the last quarter of the year and into next year. While Mr. Reid hasn’t seen a direct connection to reduced unemployment checks, he said customers have become more price-conscious….

About Me

Developer at Brown University Library specializing in instructional design and technology, Python-based data science, and XML-driven web development.