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Javier E

DNA Deciphers Roots of Modern Europeans - NYTimes.com - 0 views

  • today’s Europeans descend from three groups who moved into Europe at different stages of history.
  • The first were hunter-gatherers who arrived some 45,000 years ago in Europe. Then came farmers who arrived from the Near East about 8,000 years ago.
  • Finally, a group of nomadic sheepherders from western Russia called the Yamnaya arrived about 4,500 years ago. The authors of the new studies also suggest that the Yamnaya language may have given rise to many of the languages spoken in Europe today.
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  • the new studies were “a major game-changer. To me, it marks a new phase in ancient DNA research.”
  • Until about 9,000 years ago, Europe was home to a genetically distinct population of hunter-gatherers, the researchers found. Then, between 9,000 and 7,000 years ago, the genetic profiles of the inhabitants in some parts of Europe abruptly changed, acquiring DNA from Near Eastern populations.
  • Archaeologists have long known that farming practices spread into Europe at the time from Turkey. But the new evidence shows that it wasn’t just the ideas that spread — the farmers did, too.
  • the Yamnaya, who left behind artifacts on the steppes of western Russia and Ukraine dating from 5,300 to 4,600 years ago. The Yamnaya used horses to manage huge herds of sheep, and followed their livestock across the steppes with wagons full of food and water.
  • “You have groups which are as genetically distinct as Europeans and East Asians. And they’re living side by side for thousands of years.”
  • Between 7,000 and 5,000 years ago, however, hunter-gatherer DNA began turning up in the genes of European farmers. “There’s a breakdown of these cultural barriers, and they mix,”
  • About 4,500 years ago, the final piece of Europe’s genetic puzzle fell into place. A new infusion of DNA arrived — one that is still very common in living Europeans, especially in central and northern Europe.
  • The hunter-gatherers didn’t disappear, however. They managed to survive in pockets across Europe between the farming communities.
  • The closest match to this new DNA, both teams of scientists found, comes from skeletons found in Yamnaya graves in western Russia and Ukraine.
  • it was likely that the expansion of Yamnaya into Europe was relatively peaceful. “It wasn’t Attila the Hun coming in and killing everybody,”
  • the most likely scenario was that the Yamnaya “entered into some kind of stable opposition” with the resident Europeans that lasted for a few centuries. But then gradually the barriers between the cultures eroded.
  • the Yamnaya didn’t just expand west into Europe, however. The scientists examined DNA from 4,700-year-old skeletons from a Siberian culture called the Afanasievo. It turns out that they inherited Yamnaya DNA, too.
  • was surprised by the possibility that Yamnaya pushed out over a range of about 4,000 miles. “
  • For decades, linguists have debated how Indo-European got to Europe. Some favor the idea that the original farmers brought Indo-European into Europe from Turkey. Others think the language came from the Russian steppes thousands of years later.
  • he did think the results were consistent with the idea that the Yamnaya brought Indo-European from the steppes to Europe.
  • The eastward expansion of Yamnaya, evident in the genetic findings, also supports the theory, Dr. Willerslev said. Linguists have long puzzled over an Indo-European language once spoken in western China called Tocharian. It is only known from 1,200-year-old manuscripts discovered in ancient desert towns. It is possible that Tocharian was a vestige of the eastern spread of the Yamnaya.
  • the new studies were important, but were still too limited to settle the debate over the origins of Indo-European. “I don’t think we’re there yet,” he said.
  • Dr. Heggarty speculated instead that early European farmers, the second wave of immigrants, may have brought Indo-European to Europe from the Near East. Then, thousands of years later, the Yamnaya brought the language again to Central Europe.
Javier E

How did Neanderthals and other ancient humans learn to count? - 0 views

  • Rafael Núñez, a cognitive scientist at the University of California, San Diego, and one of the leaders of QUANTA, accepts that many animals might have an innate appreciation of quantity. However, he argues that the human perception of numbers is typically much more sophisticated, and can’t have arisen through a process such as natural selection. Instead, many aspects of numbers, such as the spoken words and written signs that are used to represent them, must be produced by cultural evolution — a process in which individuals learn through imitation or formal teaching to adopt a new skill (such as how to use a tool).
  • Although many animals have culture, one that involves numbers is essentially unique to humans. A handful of chimpanzees have been taught in captivity to use abstract symbols to represent quantities, but neither chimps nor any other non-human species use such symbols in the natural world.
  • during excavations at Border Cave in South Africa, archaeologists discovered an approximately 42,000-year-old baboon fibula that was also marked with notches. D’Errico suspects that anatomically modern humans living there at the time used the bone to record numerical information. In the case of this bone, microscopic analysis of its 29 notches suggests they were carved using four distinct tools and so represent four counting events, which D’Errico thinks took place on four separate occasions1.
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  • D’Errico has developed a scenario to explain how number systems might have arisen through the very act of producing such artefacts. His hypothesis is one of only two published so far for the prehistoric origin of numbers.
  • It all started by accident, he suggests, as early hominins unintentionally left marks on bones while they were butchering animal carcasses. Later, the hominins made a cognitive leap when they realized that they could deliberately mark bones to produce abstract designs — such as those seen on an approximately 430,000-year-old shell found in Trinil, Indonesia6. At some point after that, another leap occurred: individual marks began to take on meaning, with some of them perhaps encoding numerical information
  • The Les Pradelles hyena bone is potentially the earliest known example of this type of mark-making, says D’Errico. He thinks that with further leaps, or what he dubs cultural exaptations, such notches eventually led to the invention of number signs such as 1, 2 and 37.
  • Overmann has developed her own hypothesis to explain how number systems might have emerged in prehistory — a task made easier by the fact that a wide variety of number systems are still in use around the world. For example, linguists Claire Bowern and Jason Zentz at Yale University in New Haven, Connecticut, reported in a 2012 survey that 139 Aboriginal Australian languages have an upper limit of ‘three’ or ‘four’ for specific numerals. Some of those languages use natural quantifiers such as ‘several’ and ‘many’ to indicate higher values
  • here is even one group, the Pirahã people of the Brazilian Amazon, that is sometimes claimed not to use numbers at all10.
  • In a 2013 study11, Overmann analysed anthropological data relating to 33 contemporary hunter-gatherer societies across the world. She discovered that those with simple number systems (an upper limit not much higher than ‘four’) often had few material possessions, such as weapons, tools or jewellery. Those with elaborate systems (an upper numeral limit much higher than ‘four’) always had a richer array of possessions.
  • In societies with complex number systems, there were clues to how those systems developed. Significantly, Overmann noted that it was common for these societies to use quinary (base 5), decimal or vigesimal (base 20) systems. This suggested to her that many number systems began with a finger-counting stage.
  • This finger-counting stage is important, according to Overmann. She is an advocate of material engagement theory (MET), a framework devised about a decade ago by cognitive archaeologist Lambros Malafouris at the University of Oxford, UK12. MET maintains that the mind extends beyond the brain and into objects, such as tools or even a person’s fingers. This extension allows ideas to be realized in physical form; so, in the case of counting, MET suggests that the mental conceptualization of numbers can include the fingers. That makes numbers more tangible and easier to add or subtract.
  • The societies that moved beyond finger-counting did so, argues Overmann, because they developed a clearer social need for numbers. Perhaps most obviously, a society with more material possessions has a greater need to count (and to count much higher than ‘four’) to keep track of objects.
  • An artefact such as a tally stick also becomes an extension of the mind, and the act of marking tally notches on the stick helps to anchor and stabilize numbers as someone counts.
  • some societies moved beyond tally sticks. This first happened in Mesopotamia around the time when cities emerged there, creating an even greater need for numbers to keep track of resources and people. Archaeological evidence suggests that by 5,500 years ago, some Mesopotamians had begun using small clay tokens as counting aids.
  • Overmann acknowledges that her hypothesis is silent on one issue: when in prehistory human societies began developing number systems. Linguistics might offer some help here. One line of evidence suggests that number words could have a history stretching back at least tens of thousands of years.
  • Evolutionary biologist Mark Pagel at the University of Reading, UK, and his colleagues have spent many years exploring the history of words in extant language families, with the aid of computational tools that they initially developed to study biological evolution. Essentially, words are treated as entities that either remain stable or are outcompeted and replaced as languages spread and diversif
  • Using this approach, Pagel and Andrew Meade at Reading showed that low-value number words (‘one’ to ‘five’) are among the most stable features of spoken languages14. Indeed, they change so infrequently across language families — such as the Indo-European family, which includes many modern European and southern Asian languages — that they seem to have been stable for anywhere between 10,000 and 100,000 years.
Javier E

Opinion | Biden Trade Policy Breaks With Tech Giants - The New York Times - 0 views

  • One reason that the idea of free trade has fallen out of fashion in recent years is the perception that trade agreements reflect the wishes of big American corporations, at everybody else’s expense.
  • U.S. officials fought for trade agreements that protect intellectual property — and drug companies got the chance to extend the life of patents, raising the price of medicine around the world. U.S. officials fought for investor protections — and mining companies got the right to sue for billions in “lost profit” if a country moved to protect its drinking water or the Amazon ecosystem. And for years, U.S. officials have fought for digital trade rules that allow data to move freely across national borders — prompting fears that the world’s most powerful tech companies would use those rules to stay ahead of competitors and shield themselves from regulations aimed at protecting consumers and privacy.
  • That’s why the Biden administration, which came into office promising to fight for trade agreements that better reflect the interests of ordinary people, has dropped its advocacy for tech-friendly digital trade rules that American officials have championed for more than a decade.
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  • Last month, President Biden’s trade representative, Katherine Tai, notified the World Trade Organization that the American government no longer supported a proposal it once spearheaded that would have exported the American laissez-faire approach to tech. Had that proposal been adopted, it would have spared tech companies the headache of having to deal with many different domestic laws about how data must be handled, including rules mandating that it be stored or analyzed locally. It also would have largely shielded tech companies from regulations aimed at protecting citizens’ privacy and curbing monopolistic behavior.
  • The move to drop support for that digital trade agenda has been pilloried as disaster for American companies and a boon to China, which has a host of complicated restrictions on transferring data outside of China. “We have warned for years that either the United States would write the rules for digital trade or China would,” Senator Mike Crapo, a Republican from Idaho, lamented in a press statement. “Now, the Biden administration has decided to give China the pen.”
  • While some of this agenda is reasonable and good for the world — too much regulation stifles innovation — adopting this agenda wholesale would risk cementing the advantages that big American tech companies already enjoy and permanently distorting the market in their favor.
  • who used to answer the phone and interact with lobbyists at the U.S. trade representative’s office. The paper includes redacted emails between Trump-era trade negotiators and lobbyists for Facebook, Google, Microsoft and Amazon, exchanging suggestions for the proposed text for the policy on digital trade in the United States-Mexico-Canada Agreement. “While they were previously ‘allergic to Washington,’ as one trade negotiator described, over the course of a decade, technology companies hired lobbyists and joined trade associations with the goal of proactively influencing international trade policy,” Ms. Li wrote in the Socio-Economic Review.
  • That paper explains how U.S. trade officials came to champion a digital trade policy agenda that was nearly identical to what Google, Apple and Meta wanted: No restrictions on the flow of data across borders. No forced disclosure of source codes or algorithms in the normal course of business. No laws that would curb monopolies or encourage more competition — a position that is often cloaked in clauses prohibiting discrimination against American companies. (Since so many of the monopolistic big tech players are American, rules targeting such behavior disproportionately fall on American companies, and can be portrayed as unfair barriers to trade.)
  • The truth is that Ms. Tai is taking the pen away from Meta, Google and Amazon, which helped shape the previous policy, according to a research paper published this year by Wendy Li,
  • This approach essentially takes the power to regulate data out of the hands of governments and gives it to technology companies, according to research by Henry Gao, a Singapore-based expert on international trade.
  • Many smaller tech companies complain that big players engage in monopolistic behavior that should be regulated. For instance, Google has been accused of privileging its own products in search results, while Apple has been accused of charging some developers exorbitant fees to be listed in its App Store. A group of smaller tech companies called the Coalition for App Fairness thanked Ms. Tai for dropping support for the so-called tech-friendly agenda at the World Trade Organization.
  • Still, Ms. Tai’s reversal stunned American allies and foreign business leaders and upended negotiations over digital trade rules in the Indo-Pacific Economic Framework, one of Mr. Biden’s signature initiatives in Asia.
  • The about-face was certainly abrupt: Japan, Singapore and Australia — which supported the previous U.S. position — were left on their own. It’s unfortunate that U.S. allies and even some American officials were taken by surprise. But changing stances was the right call.
  • The previous American position at the World Trade Organization was a minority position. Only 34 percent of countries in the world have open data transfer policies like the United States, according to a 2021 World Bank working paper, while 57 percent have adopted policies like the European Union’s, which allow data to flow freely but leave room for laws that protect privacy and personal data.
  • Nine percent of countries have restrictive data transfer policies, including Russia and China.
  • The United States now has an opportunity to hammer out a sensible global consensus that gives tech companies what they need — clarity, more universal rules, and relative freedom to move data across borders — without shielding them from the kinds of regulations that might be required to protect society and competition in the future.
  • If the Biden administration can shepherd a digital agreement that strikes the right balance, there’s a chance that it will also restore faith in free trade by showing that trade agreements don’t have to be written by the powerful at the expense of the weak.
Javier E

China Is a Paper Dragon - The Atlantic - 0 views

  • “We’re in a competition with China and other countries to win the 21st Century,” Biden said. His aides describe the president as preoccupied with the challenge from China.
  • aides say Biden believes it is a key test by which historians will judge his presidency.”
  • As Biden said to the nation from the well of the House of Representatives, the authoritarian President Xi Jinping is “deadly earnest” about China “becoming the most significant, consequential nation in the world. He and others—autocrats—think that democracy can’t compete in the 21st century with autocracies.”
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  • Worried about Chinese students’ high scores on comparative math tests? You’re looking at the curated outputs of highly selective groups of students. Whereas public school is free through high school in the United States, China’s government only covers the costs of elementary and middle school. At many Chinese high schools, families have to pay tuition and other expenses, and these outlays are among the highest in the world. Consequently, 76 percent of China’s working-age population has not completed high school.
  • The book argues that China’s economic, financial, technological, and military strength is hugely exaggerated by crude and inaccurate statistics.
  • The claim that China will “overtake” the U.S. in any meaningful way is polemical and wrong—and wrong in ways that may mislead Americans into serious self-harming mistakes.
  • China may well surpass the United States as the largest economy on Earth by the 2030s. China was also almost certainly the largest economy on Earth in the 1830s. A big GDP did not make China a superpower then
  • many of the advances cited as Chinese strengths don’t hold up to close scrutiny. American analysts often publish worries about China’s growing navy, and especially its two aircraft carriers. But, Beckley writes, “Chinese pilots fly 100 to 150 fewer hours than U.S. pilots and only began training on aircraft carriers in 2012,” and he adds that “Chinese troops spend 20 to 30 percent of their time studying communist ideology.”
  • in the 1800s, the Chinese empire had a GDP much larger than that of Great Britain. The Chinese army of 800,000 men also enormously exceeded Britain’s troop numbers. Yet when the two states clashed in the two Opium Wars, from 1839 to 1842 and again in 1858, China was crushingly defeated. Why? A great part of the answer, then as now, was the cost of repression.
  • Many Chinese college students describe their universities as “diploma factories,” where student-teacher ratios are double the average in U.S. universities, cheating is rampant, students spend a quarter of their time studying “Mao Zedong thought,” and students and professors are denied access to basic sources of information, such as Google Scholar and certain academic journal repositories.
  • Chinese firms’ total spending on R&D as a percentage of sales revenue stalled at levels four times below the average for American firms. … Chinese firms remain dependent on foreign technologies and manual labor and have a rudimentary level of automation and digitization: on average Chinese enterprises have just nineteen robots per ten thousand employees; U.S. firms, by contrast, use an average of 176 robots per ten thousand employees.
  • But isn’t China sprinting to overtake the United States? Yes, but it’s stumbling badly in that pursuit. China now leads the world in retractions of scientific studies due to fraud; one-third of Chinese scientists have admitted to plagiarizing or falsifying results (versus 2 percent of U.S. scientists); and two-thirds of China’s R&D spending has been lost to corruption.
  • Beckley’s clarifying theoretical insight: Repression is expensive
  • The Chinese military’s first and paramount mission is preserving the power of the Chinese Communist Party against China’s own people. The U.S. military can focus entirely on external threats.
  • The lines that plot the comparative GDP of the United States and China distort the real balance of power between the two societies, Beckley argues, because China must devote such a large share of its resources to basic subsistence needs to avert the overthrow of the state.
  • this might be a useful moment to hear a contrary voice. In 2018, the Tufts University professor Michael Beckley published a richly detailed study of Chinese military and economic weaknesses. The book is titled Unrivaled: Why America Will Remain the World’s Sole Superpower.
  • Nineteenth-century China faced an average of 25 local uprisings a year. Most of its troops had to be deployed to suppress rebellions and control banditry, leaving few available for war-fighting.
  • A final piece of the answer is that technological copycats face huge disadvantages against technological innovators. They will always lag behind the more creative rival, not only in the factory, but on the battlefield. “Repeatedly during the Opium Wars … Chinese armies of thousands were routed in minutes by a few hundred, or even a few dozen, British troops,”
  • Beckley seeks to highlight the immense defects of gross GDP as a measure of national strength—factoring in the costs of repression—and the strategic predicament of China’s location, barred from the open ocean by a ring of potential enemies on its eastern front, extending from Russia, through Korea, past Japan, to the Philippines, and then to Vietnam.
  • He said that he had become more alarmed by China’s aggressive and repressive intentions, but remained as dubious as ever about Chinese capacities.
  • Sanders lost the nomination, but he won the debate within the Democratic Party over trade policy. In his address, Biden committed to extending and enlarging “Buy American” favoritism in government procurement. His administration is maintaining Trump’s anti-China tariffs and is “reviewing”—not yet removing—tariffs against the European Union and other trade partners. Biden economic advisers warned during his campaign that trade expansion would rank low on their list of priorities, and so it is proving.
  • The Trump administration raised the defense budget by more than $100 billion a year, and the spending increases have continued even after the campaign against ISIS came to an end. More and more of the money is being directed to preparations for a conflict with China.
  • China’s language and behavior is assertive and provocative, for sure. China’s power is rising, yes. Its behavior at home and abroad is becoming more oppressive and more brutal; that’s also tragically true.
  • as Americans muster the courage and will to face Chinese realities, that reckoning needs also to appreciate the tremendous capabilities of this country, and the very real limits besetting China: a fast-aging population, massive internal indebtedness, and a regime whose worsening repression suggests its declining popularity.
  • two deep truths about Chinese society: It’s about to be home to a lot of old people, and trust in the state is very low, and for good reason.
  • As China’s population ages, it will deplete its savings. Chinese people save a lot to compensate for the state’s meager social-security provision. For three decades, the savings of ordinary people financed the spectacular borrowing of China’s state-owned enterprises
  • What happens as the savings are withdrawn to finance hundreds of millions of retirements? Again—who knows?
  • China misallocates capital on a massive scale. More than a fifth of China’s housing stock is empty—the detritus of a frenzied construction boom that built too many apartments in the wrong places
  • China overcapitalizes at home because Chinese investors are prohibited from doing what they most want to do: get their money out of China. Strict and complex foreign-exchange controls block the flow of capital
  • More than one-third of the richest Chinese would emigrate if they could, according to research by one of the country’s leading wealth-management firms. The next best alternative: sending their children out. Pre-pandemic, almost 1 million young Chinese attended Western universities. Pre-pandemic, only about 10,000 Americans were studying in China; single thousands were from other Western countries—and almost all of them were in the country to study language, not any academic specialty.
  • U.S. policy makers should look to the future with a little more confidence and a lot more trust in trade, markets, and the superior potential of a free people under an elected government.
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