At $4, Everybody Gets Rational - Washingtonpost.com

Here is another excellent gas price article containing accurate economic principles.

Yes, the non-economist (ie, average citizen) doesn’t get it on how higher gas prices will ultimately lead a nation’s economy to conservation, energy independence and efficiency in the long run.

Hey, I’ll be honest: I don’t like higher gas prices any more than I do going to the dentist, but I am glad they are rising as I see and read about SUV purchases falling off a cliff, driving habits changing right before my very eyes, and the quantity demanded for gasoline falling fast.

By CHARLES KRAUTHAMMER | Posted Friday, June 06, 2008

So now we know: The price point is $4.

At $3 a gallon, Americans just grin and bear it, suck it up, and, while complaining profusely, keep driving like crazy.

At $4, it is a world transformed. Americans become rational creatures. Mass transit ridership is at a 50-year high. Driving is down 4%. (Any U.S. decline is something close to a miracle.) Hybrids and compacts are flying off the lots. SUV sales are in free fall.

The wholesale flight from gas guzzlers is stunning in its swiftness, but utterly predictable. Everything has a price point. Remember that “love affair” with SUVs? Love, it seems, has its price too.

America’s sudden change in car-buying habits makes suitable mockery of that absurd debate Congress put on last December on fuel efficiency standards. At stake was precisely what miles-per-gallon average would every car company’s fleet have to meet by precisely what date.

It was one out-of-a-hat number (35 mpg) compounded by another (by 2020). It involved, as always, dozens of regulations, loopholes and throws at a dartboard. And we already knew from past history what the fleet average number does.

When oil is cheap and everybody wants a gas guzzler, fuel efficiency standards force manufacturers to make cars that nobody wants to buy. When gas prices go through the roof, this agent of inefficiency becomes an utter redundancy.

At $4 a gallon, the fleet composition is changing spontaneously and overnight, not over the 13 years mandated by Congress. (Even Stalin had the modesty to restrict himself to five-year plans.)

Just Tuesday, GM announced that it would shutter four SUV and truck plants, add a third shift to its compact and midsize sedan plants in Ohio and Michigan, and green-light for 2010 the Chevy Volt, an electric hybrid.

Some things, like renal physiology, are difficult. Some things, like Arab-Israeli peace, are impossible. And some things are preternaturally simple. You want more fuel-efficient cars? Don’t regulate. Don’t mandate. Don’t scold. Don’t appeal to the better angels of our nature. Do one thing:

Hike the cost of gas until you find the price point.

Unfortunately, instead of hiking the price ourselves by means of a gasoline tax that could be instantly refunded to the American people in the form of lower payroll taxes, we let the Saudis, Venezuelans, Russians and Iranians do the taxing for us — and pocket the money that the tax would have recycled back to the American worker.

This is insanity. For 25 years and with utter futility (starting with “The Oil-Bust Panic,” the New Republic, February 1983), I have been advocating the cure: a U.S. energy tax as a way to curtail consumption and keep the money at home.

In May 2004 (and again in November 2005), I called for “the government — through a tax — to establish a new floor for gasoline,” by fully taxing any drop in price below a certain benchmark.

The point was to suppress demand and to keep the savings (from any subsequent world price drop) at home in the U.S. Treasury rather than going abroad. At the time, oil was $41 a barrel. It is now $123.

But instead of doing the obvious — tax the damn thing — we go through spasms of destructive alternatives, such as efficiency standards, ethanol mandates and now a crazy carbon cap-and-trade system the Senate debated last week. These are infinitely complex mandates for inefficiency and invitations to corruption. But they have a singular virtue: They hide the cost to the American consumer.

Want to wean us off oil? Be open and honest. The British are paying $8 a gallon for petrol. Goldman Sachs is predicting we will be paying $6 by next year. Why have the extra $2 (above the current $4) go abroad? Have it go to the U.S. Treasury as a gasoline tax and be recycled back into lower payroll taxes.

Announce a schedule of gas tax hikes of 50 cents every six months for the next two years. And put a tax floor under $4 gasoline, so that as high gas prices transform the U.S. auto fleet, change driving habits and thus hugely reduce U.S. demand — and bring down world crude oil prices — the American consumer and the American economy reap all of the benefit.

Herewith concludes my annual exercise in futility. By the time I advocate the tax floor again next year, you’ll be paying for gas in bullion.

Eight reasons you’ll rejoice when we hit $8-a-gallon gasoline - MarketWatch - by Chris Plummer

I selected this article because I really believe in it. It wasn’t until I became a fan of studying economics that I began to believe that rising gas prices are in the LONG TERM ECONOMIC INTEREST of the US economy as these higher prices will incent consumers and businesses to move towards alternate forms of fuels.

I am also no longer in support of US offshore drilling, not because I am an environmentalist, but an economist that understands that it will be necessary to take higher, painful increases in petroleum to incent businesses and consumers to pursue alternative energy and more efficient transportation solutions. Voluntary conservation or asking oil companies to pursue alternative fuel development is nice in concept, but poor in results.

I now root for “steadily climbing oils prices” to provide greater incentive to move faster to more efficient forms of transportation and spawn alternative energy solutions. It’s a little like going to the dentist: it’s not fun, but it is necessary and will leave us in better condition when its over.

For one of the nastiest substances on earth, crude oil has an amazing grip on the globe. We all know the stuff’s poison, yet we’re as dependent on it as our air and water supplies — which, of course, is what oil is poisoning.

Shouldn’t we be technologically advanced enough here in the 21st Century to quit siphoning off the pus of the Earth? Regardless whether you believe global warming is threatening the planet’s future, you must admit crude is passé.

Americans should be celebrating rather than shuddering over the arrival of $4-a-gallon gasoline. We lived on cheap gas too long, failed to innovate and now face the consequences of competing for a finite resource amid fast-expanding global demand.

A further price rise as in Europe to $8 a gallon — or $200 and more to fill a large SUV’s tank — would be a catalyst for economic, political and social change of profound national and global impact. We could face an economic squeeze, but it would be the pain before the gain.

The U.S. economy absorbed a tripling in gas prices in the last six years without falling into recession, at least through March. Ravenous demand from China and India could see prices further double in the next few years — and jumpstart the overdue process of weaning ourselves off fossil fuels.
Consider the world of good that would come of pricing crude oil and gasoline at levels that would strain our finances as much as they’re straining international relations and the planet’s long-term health:

1. RIP for the internal-combustion engine

They may contain computer chips, but the power source for today’s cars is little different than that which drove the first Model T 100 years ago. That we’re still harnessed to this antiquated technology is testament to Big Oil’s influence in Washington and success in squelching advances in fuel efficiency and alternative energy.

Given our achievement in getting a giant mainframe’s computing power into a handheld device in just a few decades, we should be able to do likewise with these dirty, little rolling power plants that served us well but are overdue for the scrap heap of history.

2. Economic stimulus

Necessity being the mother of invention, $8 gas would trigger all manner of investment sure to lead to groundbreaking advances. Job creation wouldn’t be limited to research labs; it would rapidly spill over into lucrative manufacturing jobs that could help restore America’s industrial base and make us a world leader in a critical realm.

The most groundbreaking discoveries might still be 25 or more years off, but we won’t see massive public and corporate funding of research initiatives until escalating oil costs threaten our national security and global stability — a time that’s fast approaching.

3. Wither the Middle East’s clout

This region that’s contributed little to modern civilization exercises inordinate sway over the world because of its one significant contribution — crude extraction. Aside from ensuring Israel’s security, the U.S. would have virtually no strategic or business interest in this volatile, desolate region were it not for oil — and its radical element wouldn’t be able to demonize us as the exploiters of its people.

In the near term, breaking our dependence on Middle Eastern oil may well require the acceptance of drilling in the Alaskan wilderness — with the understanding that costly environmental protections could easily be built into the price of $8 gas.

4. Deflating oil potentates

On a similar note, Venezuela’s Hugo Chavez and Iran’s Mahmoud Ahmadinejad recently gained a platform on the world stage because of their nations’ sudden oil wealth. Without it, they would face the difficult task of building fair and just economies and societies on some other basis.
How far would their message resonate — and how long would they even stay in power — if they were unable to buy off the temporary allegiance of their people with vast oil revenues?

5. Mass-transit development

Anyone accustomed to taking mass transit to work knows the joy of a car-free commute. Yet there have been few major additions or improvements to our mass-transit systems in the last 30 years because cheap gas kept us in our cars.

Confronted with $8 gas, millions of Americans would board buses, trains, ferries and bicycles and minimize the pollution, congestion and anxiety spawned by rush-hour traffic jams. More convenient routes and scheduling would accomplish that.

6. An antidote to sprawl

The recent housing boom sparked further development of antiseptic, strip-mall communities in distant outlying areas. Making 100-mile-plus roundtrip commutes costlier will spur construction of more space-efficient housing closer to city centers, including cluster developments to accommodate the millions of baby boomers who will no longer need their big empty-nest suburban homes.

Sure, there’s plenty of land left to develop across our fruited plains, but building more housing around city and town centers will enhance the sense of community lacking in cookie-cutter developments slapped up in the hinterlands.

7. Restoration of financial discipline

Far too many Americans live beyond their means and nowhere is that more apparent than with our car payments. Enabled by eager lenders, many middle-income families carry two monthly payments of $400 or more on $20,000-plus vehicles that consume upwards of $15,000 of their annual take-home pay factoring in insurance, maintenance and gas.

The sting of forking over $100 per fill-up would force all of us to look hard at how much of our precious income we blow on a transport vehicle that sits idle most of the time, and spur demand for the less-costly and more fuel-efficient small sedans and hatchbacks that Europeans have been driving for decades.

8. Easing global tensions

Unfortunately, we human beings aren’t so far evolved that we won’t resort to annihilating each other over energy resources. The existence of weapons of mass destruction aside, the present Iraq War could be the first of many sparked by competition for oil supplies.

Steep prices will not only chill demand in the U.S., they will more importantly slow China and India’s headlong rush to make the same mistakes we did in rapidly industrializing — like selling $2,500 Tata cars to countless millions of Indians with little concern for the environmental consequences. If we succeed in developing viable energy alternatives, they could be a key export in helping us improve our balance of trade with consumer-goods producers.

Additional considerations

Weaning ourselves off crude will hopefully be the crowning achievement that marks the progress of humankind in the 21st Century. With it may come development of oil-free products to replace the chemicals, pharmaceuticals, plastics, fertilizers and pesticides that now consume 16% of the world’s crude-oil output and are likely culprits in fast-rising cancer rates.

By its very definition, oil is crude. It’s time we develop more refined energy sources and that will not happen without a cost-driven shift in demand.

School kids feel the bite of high food prices - May. 5, 2008

A classic method of teaching the basic economic concept of the production possibilities curve is to illustrate the relationship between a nation’s decision to invest in military goods versus civilian goods. The model typically includes two “products” that a nation can choose to invest in: guns and butter. The goods themselves are not important, rather what they are meant to represent: the tradeoff between defense and civilian focused investment.

Today the United States faces a very real version of the old “guns vs. butter” model. Rising global food prices have put school districts in a bind: how to feed kids nutritious meals as the prices ingredients has risen at unprecedented rates:

Rising food prices are making it harder for schools to cook up ways to give kids the nutrition they need.

Right now, they’re taking shortcuts and shuffling ingredients to make up the difference, but that’s only a short-term solution with long-term consequences on the horizon.

“I’ve been in school service for 27 years and this is the worst it’s ever been,” said Sara Gasiorowski, food service director for Wayne Township Schools in Indianapolis. “I have never seen food prices jump up so far…

“Food prices nationwide have risen 4.5% between March 2007 and March 2008, according to the Bureau of Labor Statistics’ Consumer Price Index, with flour and eggs rising even more dramatically than milk. Grumbles said milk prices in her district are up 22% from last year, which means an increase of 3.5 cents for each of the federally required 16,000 half-pints she provides every day.

“For every penny on a carton of milk, it costs me $30,000 a year,” she said. “That’s $105,000 extra on my food bill.”

Flour prices have roughly doubled over the last year, according to Grumbles, to $19 per 50-pound bag. To make up for the difference, she substitutes canned peaches for fresh apples “to save a couple pennies” per meal, or she uses ground beef in place of chicken.

Unfortunately, federal funding for school lunches has increased at much slower rate than cost to districts of providing those meals:

Federal reimbursement programs cover all or part of school districts’ lunch tabs. Congress lifts reimbursement rates every year, but Gasiorowski said it hasn’t been enough: “We need to be looking at an increase of 12% to 15%, instead of our usual annual increase of 2 or 3%.”

The current federal reimbursement program is based on household incomes; the poorest American students receive $2.47 of federal funding towards their “free lunches”, while students from the highest income bracket only receive $0.23 per meal. The problem is, the average school lunch now costs $3.10, so these days no one is actually receiving a “free lunch”, not even the poorest American students.

This article struck me in that is truly does illustrate the concept of tradeoffs as illustrated in the production possibilities curve. Society must allocate its scarce resources towards the goods and services it deems most desirable based on the needs of its citizenry. Complications arise in this basic model, however, when government is involved.

The commitment to subsidizing school lunches is based on the idea that if the responsibility of feeding American school children were left to the free market, resources would surely be underallocated towards nutritious meals, representing a market failure. School lunches are a merit good, meaning they would be underprovided by the free market.

The same is true of national defense. In fact, some believe that if left completely up to the free market, national defense would not be provided at all, rather individuals who could afford it would hire private security forces to protect their private property. When a good would be totally neglected in a free market, it is called a public good. This is national defense, a good that were it not provided by the government would probably not be produced at all.

Clearly, both “guns” and “butter” create benefits for society. In the case of both national defense and nutritious school lunches, both goods are under-provided by the free market, and therefore should be subsidized or fully provided by the federal government. As this story reveals, however, the US is now in a situation where more resources need to be allocated towards “butter”, perhaps even if this means allocating fewer resources towards “guns”, or any of the other myriad public goods the government provides society with.

Update: I received an email message from a reader about the above blog post:

I have to say that your “guns and butter” diagram is “interesting.” I am not clear on why the United States should spend vastly more on school lunches than on defending the free world While government provided school lunches may have a place, most Americans feed their own children and do not depend on Federal financing.

Where did you get the notion that feeding our children would be “under-provided by the free market”

Here was my reply to this reader. I’m posting it here because I want to make it clear the the diagram above is not meant to make any political statement about US military spending:

Hello,

Actually, the PPC was included simply to illustrate the basic tradeoff that society faces when it chooses how to allocate its scarce resources.

Having taught at least for a short while in public schools, I can say that nutritious lunches are definitely “underprovided” by the free market, that is, many students in poor communities in America depend on the “free and reduced” lunches that are provided through federal and state funding programs… I once volunteer taught in a poor Elementary School in Spokane, Washington where 40% of the students ate only two meals a day, both provided free by the school district: one at 8 in the morning, one at noon. Many of these children had parents who were poor, unemployed, often addicted to drugs, who failed to put any food on the table whatsoever.

In other words, I do think that nutritious meals are a “merit good” which by definition is one that is underprovided by the free market, therefore requires subsidies from the government. Otherwise, why would the government offer such subsidies at all, if these meals were something the free market could adequately provide on its own?

Again, I was not making any political statement with the graph, only pointing out the basic economic concept of tradeoffs and the idea that society must allocate its scarce resources towards an “optimal” combination of goods and services. The article indicates that in this time of rising food prices, not enough of America’s resources are going towards providing nutritious meals for school children, indicating that a movement along the PPC might be in order. The degree of such a move is irrelevant, only the fact that a movement must occur if nutritious meals are to continue to be provided. In fact, the x-axis could have represented any other public good the government provides for society, I chose “military spending” so that the current example was consistent with the classic example of “guns vs. butter”.

Hope that clears things up…

Best,

Jason

At Charter School, Higher Teacher Pay - New York Times

A New York charter school opening this year will start teachers’ pay at $125,000. The school’s creator and principal believes that quality teachers, not technology, are what will lead to results for students at his school.

The school’s creator and first principal, Zeke M. Vanderhoek, contends that high salaries will lure the best teachers. He says he wants to put into practice the conclusion reached by a growing body of research: that teacher quality — not star principals, laptop computers or abundant electives — is the crucial ingredient for success.

“I would much rather put a phenomenal, great teacher in a field with 30 kids and nothing else than take the mediocre teacher and give them half the number of students and give them all the technology in the world,” said Mr. Vanderhoek, 31, a Yale graduate and former middle school teacher who built a test preparation company that pays its tutors far more than the competition.

This is certainly an interesting experiment. American schools have struggled for decades to improve results through the implementation countless programs and policies. Lately, one emphasis has certainly been on technology; but this article makes an interesting point: all the technology in the world won’t make a difference if it’s not in the hands of an excellent teacher.

The best basketball players in the NBA make millions more than the average ones. The most skilled doctors are rewarded with the highest salaries. Top lawyers earn hundreds (if not thousands) of dollars an hour while one from a third rate law school toils for $65,000 a year in a county prosecutor’s office. So what’s different about teaching? Why do all teachers in a particular district with a particular number of years experience get paid the same salary? Could you ever imagine all the lawyers in a particular city making identical salaries? The idea is absurd. Clearly the top law firms will pay for the top lawyers, which in turn enables that law firm to achieve the best possible results for its clients.

Yet the vast majority of teachers in America find themselves stuck in a system rooted in an outdated belief in equity, egalitarianism, fairness, whatever you want to call it, where pay is based not on talent, ability, skill, expertise, and all the attributes that determine one’s pay in a competitive labor market like medicine, law, and professional sports; rather the older you are and the more time you’ve “served”, the greater your financial reward. Is it a coincidence that America is known for its cutting-edge medical field, its skilled litigators, and world-class professional athletes. Could someone describe to me the reputation of American public schools? No? I understand, it’s a depressing subject.

In economics we teach the importance of incentives, which when used properly encourage individuals to improve their human capital in as many ways as possible. In other words, if I am rewarded for excellence, I will strive for excellence in my profession. The only incentive in education, it seems, is to grow old and gray, because that’s how I will make more money. Easy for teachers whose only goal is to make it to retirement, right? Without a doubt. Effective for students in a society falling ever further behind other countries in academic achievement? Hardly.

Ironically, some of the teachers most skilled in the application of new technologies and versed in the latest pedagogies are those who grew up learning with those technologies in their own education in a constructivist, student-centered environment. In other words, the youngest, most tech-savvy, who just happen to earn the lowest salaries (practically subsistent in some parts of the country).

Mr. Vanderhoek may be proven wrong. Perhaps it is more technology, more standardized tests, more powerful teachers’ unions, that America’s children need to begin achieving the results that Indian, Chinese, Singaporean, Korean, Japanese, even European students are achieving in the maths, sciences, and other subjects. But if he’s right, then $125,000 (2.5 times the national average for public school teachers) may prove to be just what’s needed attract the kinds of teachers that can achieve results. What if this school does succeed? Will it matter? Or will America’s public schools forever reward teachers not for performance and qualifications, but simply for getting older?

Powered by ScribeFire.

Shanghai American School Employment - Available Positions

No article here, just some food for though about a meeting all SAS teachers attended today during lunch. Our director, Dennis Larkin, announced the changes being made to teachers’ salary and compensation packages for next school year. As anyone in international education knows, the market for teachers is a very competitive one these days. When I say competitive, I mean schools are forced to compete with one another for a rather scarce supply of teachers who are out there looking for work.

SAS has set as a goal to rank among the top five international schools in Asia with regards to compensation for teachers. It dawned on me during the meeting today that Dr. Larkin’s presentation illustrated a clear example of an imperfectly competitive labor market, the characteristics of which are a few large firms (in this cases schools) competing with one another to attract workers (teachers) to their firm, in order to meet a growing demand for the product being provided (students’ education). In East Asia, where schools all over China, Korea, and Japan continue to grow as more and more employees sent by foreign firms to oversee company operations in the region arrive with their families in tow, demand for more international school seats leads to demand for more international school teachers (remember, resource demand is derived demand). Rising tuition fees (price of the product) cause the marginal revenue product of teachers to increase (remember, MRP = PxMP), and since MRP is synonymous with demand, schools’ demand for labor also increases. Continue Reading »

New York Manhole Covers, Forged Barefoot in India - New York Times

In the revealing story above, the NYT reports on the manufacture of the New York’s thousands of manhole covers, which it turns out come primarily from a foundry in the Indian state of West Bengal. An NYT photographer discovered the Indian factory, and his photos prompted the report here:

Eight thousand miles from Manhattan, barefoot, shirtless, whip-thin men rippled with muscle were forging prosaic pieces of the urban jigsaw puzzle: manhole covers.

Seemingly impervious to the heat from the metal, the workers at one of West Bengal’s many foundries relied on strength and bare hands rather than machinery. Safety precautions were barely in evidence; just a few pairs of eye goggles were seen in use on a recent visit.

Continue Reading »

China rations diesel as record oil hits supplies | Markets | Reuters

As I headed into the city for dinner with friends on Saturday night, I witnessed an unusual site: as our taxi passed a petrol station, I saw about 25 or 30 blue trucks (the ubiquitous medium of transporting good from Shanghai’s factories to her ports) spilling out of the parking lot into the road, apparently queued, waiting for a spot at the pump. I’d never seen such a line at any of the petrol stations around Shanghai, and briefly wondered whether it was just a busy night or whether something else was amiss.

Well, reading the headlines in today’s news, I stumbled upon a clear economic answer to the petrol pump mystery. It appears that China has begun rationing diesel fuel at petrol stations in the East Coat provinces.

Truck drivers reported long queues at petrol stations along a national highway linking Fujian and Zhejiang provinces, with each truck getting 100 yuan ($13) worth of diesel, or around 20 litres, per visit at a state-run station and 40 litres at a private kiosk…

“What’s wrong with the oil market? Our drivers had to queue the whole night for only a small amount of fill, slowing the traffic by almost one day,” said Gao Meili, who manages a logistics company.

Continue Reading »

To eat . . . . or to drive? - Times Online

The whole debate over global warming has just as many economic as environmental implications. A recent article in The Times illustrated how the growing investment in renewable biofuels impacts on global food markets.

Apparently as a result, Japanese snack packets now contain 10% less chips than they did a month ago, while the price of beer at the Munich Oktoberfest will be at record levels.

These, say industry insiders, are the first skirmishes of a conflict that could soon dominate geopolitics: the war for resources between the world’s 800 million cars and its six billion stomachs. In the developed world, the war will come down to price and choice; in the developing world it could come down to survival. The war centres largely on global demand for biofuels — “green” replacements for petrol, such as ethanol, that can be produced from sugar, corn and other agricultural products rather than fossil fuels.

Wheat and barley fields are being replaced by ethanol sources, such as sugar and corn, in the USA and Brazil. Reduced food supplies are leading to higher prices for snacks and beer. The article states starkly that the “war for resources” will be between cars and stomachs. Economists would not envisage such an apocalypse, because they believe that the price system will efficiently allocate resources even on such a wide scale over the globe and between such apparently disparate goods. But the intermediate scenarios should be interesting.

Entrepreneurs From China Flourish in Africa- New York Time, August 18, 2007

One of my AP students recently asked me to explain why entrepreneurship was considered one of the four factors of production by economists. He questioned the nature of this “fourth factor of production” because unlike the other types of resources it was less obvious to him how this resource fit into the product market. In the product market, good and services are paid for directly by consumers. but how did entrepreneurs play a direct role in this market.

Part of the problem is that entrepreneurs truly belong in the factor market, a market that students new to economics are less acquainted with and one that both AP and IB students will be learning about this semester. Entrepreneurs are the “behind the scene” people. They are the “big ideas” people. They visionaries in business who figure out how to utilize all the other factors of production in order to make a good or service that will result in a profit.

I found the above New York times article about Chinese Entrepreneurs who have “taken the big risk” of moving to Africa in search of a better life and good profits extremely interesting. Chinese entrepreneur are moving into new territories in order to seek their fortunes, in places that many others have not dared to go before them because of a fear of violence, a fear of unfriendly governments or a fear of people. These are places where poverty and opportunity are rampant. Mr.Yang, an entrepreneur from the Fujian Province in China is a true risk taker and can teach all economics students about the meaning of entrepreneurship: the good, the bad and the ugly.

What set him apart was his destination. Instead of the traditional adopted homelands like the United States and Europe, where Fujian people have settled by the hundreds of thousands, he chose this small, landlocked country in southern Africa.

“Before I left China,” said Mr. Yang, now 25, “I thought Africa was all one big desert.” So he figured that ice cream would be in high demand, and with money pooled from relatives and friends, he created his own factory at the edge of Lilongwe, Malawi’s capital. The climate is in fact subtropical, but that has not stopped his ice cream company from becoming the country’s biggest.

Stories like this have become legion across Africa in the past five years or so, as hundreds of thousands of Chinese have discovered the continent, setting off to do business in a part of the world that had been terra incognita. The Xinhua News Agency recently estimated that at least 750,000 Chinese were working or living for

extended periods on the continent, a reflection of deepening economic ties between China and Africa that reached $55 billion in trade in 2006, compared with less than $10 million a generation earlier.

Today, in many of the countries where the new Chinese emigrants have settled, like Chad, Chinese-owned pharmacies, massage parlors and restaurants serving a variety of regional Chinese cuisines can be found; the Western presence, once dominant, has steadily dwindled, and essentially consists nowadays of relief experts working international agencies or oil workers, living behind high walls in heavily guarded enclaves.

At first, this new Chinese exodus was driven largely by word of mouth, as pioneers like Mr. Yang relayed news back home of abundant opportunities in a part of the world where many economies lie undeveloped or in ruins, and where even in the richer countries many things taken for granted in the developed world await builders and investors.

Conditions like these often deter Western investors, but for many budding Chinese entrepreneurs, Africa’s emerging economies are inviting precisely because they seem small and accessible. Competition is often weak or nonexistent, and for African customers, the low price of many Chinese goods and services make them more affordable than their Western counterparts.

Not everything that these entrepreneurs have touched is pretty. Some locals have come to resent Chinese entrepreneurs and accuse them of entering local markets where local business owners can not compete with such low prices.

Africans view the influx of Chinese with a mix of anticipation and dread. Business leaders in Chad, a central African nation with deepening oil ties to China, are bracing for what they suspect will be an army of Chinese workers and investors.

“We expect a large influx of at least 40,000 Chinese in the coming years,” said Renaud Dinguemnaial, director of Chad’s Chamber of Commerce. “This massive arrival could be a plus for the economy, but we are also worried. When they arrive, will they bring their own workers, stay in their own houses, send all their money home?”

In Zambia, where anti-Chinese sentiment has been building for several years, merchants at the central market in Lusaka, the capital, said that if Chinese people wanted to come to Africa, they should come as investors, building factories, not as petty traders who compete for already scarce customers for bottom-dollar items like flip-flops and T-shirts.

“The Chinese claim to come here as investors, but they are trading just like us,” said Dorothy Mainga, who sells knockoff Puma sneakers and Harley Davidson T-shirts in the Kamwala Market in Lusaka. “They are selling the same things we are selling at cheap prices. We pay duty and tax, but they use t