Category Archive 'Economists'

04 Apr 2009

Getting Ready to Steal the Census

Calculators, Damned Lies, Economists, Lies, Obama Appointments, Robert M. Groves, Sophisters, Statistics, The Census

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Matthew Vadum, at American Spectator, notes that Barack Obama has selected as Director of the Census the most partisan possible figure, a leftwing sociologist previously involved in democrat efforts to supplement real enumeration with creative estimates of supposedly uncountable homeless and minority democrat voters.


A practitioner of the statistical voodoo known as “sampling” has been selected by President Obama to head the Census Bureau, which is poised to carry out the decennial census next year with ACORN’s help. Liberal pressure groups and Democrats have long favored using statistical modeling, a practice controversial because it’s flagrantly unconstitutional and because it opens up the counting process to political manipulation.

“A sampling process would open the census to the worst kind of political manipulation,” Sen. Tom Coburn (R-Oklahoma) recently said. “The Constitution clearly requires a count of every person, not a best guess that could be influenced by political rather than empirical considerations.”

The president’s nominee is Robert M. Groves, a professor of the alleged discipline known as sociology at the University of Michigan.

Republican lawmakers are justifiably alarmed, the New York Times reports.

Some news agency story.

20 Feb 2009

Finding Bin Laden by Biogeographic Analysis

Al Qaeda, Calculators, Economists, Geography, Osama bin Laden, Pakistan, Science, Sophisters, UCLA

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Remember the “How to Catch a Lion in the Sahara Desert” science jokes which often used to be found on departmental bulletin back when my generation was young?

Examples:


The Hilbert (axiomatic) method

We place a locked cage onto a given point in the desert. After that we introduce the following logical system:

Axiom 1: The set of lions in the Sahara is not empty.
Axiom 2: If there exists a lion in the Sahara, then there exists a lion in the cage.
Procedure: If P is a theorem, and if the following is holds: “P implies Q”, then Q is a theorem.
Theorem 1: There exists a lion in the cage.

The geometrical inversion method

We place a spherical cage in the desert, enter it and lock it from inside. We then perform an inversion with respect to the cage. Then the lion is inside the cage, and we are outside.

The projective geometry method

Without loss of generality, we can view the desert as a plane surface. We project the surface onto a line and afterwards the line onto an interiour point of the cage. Thereby the lion is mapped onto that same point.

The Bolzano-Weierstraß method

Divide the desert by a line running from north to south. The lion is then either in the eastern or in the western part. Let’s assume it is in the eastern part. Divide this part by a line running from east to west. The lion is either in the northern or in the southern part. Let’s assume it is in the northern part. We can continue this process arbitrarily and thereby constructing with each step an increasingly narrow fence around the selected area. The diameter of the chosen partitions converges to zero so that the lion is caged into a fence of arbitrarily small diameter.


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This type of scientific approach to real world tasks has not completely gone out of style, it seems. The LA Times reports that Thomas W. Gillespie and John A. Agnew, two UCLA professors of geography, et alia, in an article in MIT’s International Review, have undertaken to pin down Osama bin Laden’s current hideout, using biogeographic theory. They may be wrong, but I think we should bomb the buildings they’ve identified just for luck.


While U.S. intelligence officials have spent more than seven years searching fruitlessly for Osama bin Laden, UCLA geographers say they have a good idea of where the terrorist leader was at the end of 2001 — and perhaps where he has been in the years since.

In a new study published online today by the MIT International Review, the geographers report that simple facts, publicly available satellite imagery and fundamental principles of geography place the mastermind behind the Sept. 11 attacks against the U.S. in one of three buildings in the northwest Pakistan town of Parachinar, in the Kurram tribal region near the border with Afghanistan

The researchers advocate that the U.S. investigate — but not bomb — the three buildings. ...

The UCLA findings rely on two principles used in geography to predict the distribution of wildlife, primarily for the purposes of designing approaches to conservation. The first, known as distance-decay theory, holds that as one travels farther away from a precise location with a specific composition of species — or, in this case, a specific composition of cultural and physical factors —the probability of finding spots with that same specific composition decreases exponentially. The second, island biogeographic theory, holds that large and close islands have larger immigration rates and will support more species than smaller, more isolated islands.

Inspired by distance-decay theory, the seven-member team started by drawing concentric circles around Tora Bora on a satellite map of the area at a distance of 10 kilometers — or 6.1 miles — apart.

“The farther bin Laden moves from his last reported location into the more secular parts of Pakistan or into India, the greater the probability that he will be in an area with a different cultural composition, thereby increasing the probability of his being captured or eliminated,” Gillespie said.

Then, informed by island biogeographic theory, the researchers scoured the rings for “city islands” — or distinctly separate settlements of considerable size.

“Island biology theory predicts that he would find his way to the largest but least isolated city of that area,” said Gillespie, an authority on measuring and modeling biodiversity on Earth from space. “If you get stuck on an island, you would want it to be Hawaii rather than one with a single palm tree. It’s a matter of resources.”

The approach netted 26 cities within a 12.4-mile radius of Tora Bora on imagery from Landsat Enhanced Thematic Mapper Plus (ETM+), a global archive of satellite photos managed by NASA and the U.S. Geological Survey. With a 2.7-square-mile footprint, Parachinar turned out to be the largest and fourth-least isolated city, the team determined.

“Based on bin Laden’s last known location in Tora Bora, we estimate that he must have traveled 1.9 miles over a 13,000-foot-high pass into Kurram and then headed for the largest city, which turns out to be Parachinar,” said Agnew, who is the current president of the Association of American Geographers, the field’s leading scholarly organization.

The researchers ruled out cities on the Afghanistan side of the border because the country was occupied at the time by U.S. and international forces and has been particularly unstable ever since.

“The Pakistan side of the border is much better for hiding because of its ambiguous political status within the country and the formal absence of U.S. or NATO troops,” Agnew said.

Faced with the prospect of picking from more than 1,000 structures clearly portrayed in the satellite imagery of Parachinar, the team decided to come up with a short list of the criteria that bin Laden would need for housing, based on well-known information about him, including his height (between 6’4” and 6’6”, depending on the source), his medical condition (apparently in need of regular dialysis and, therefore, electricity to run the machine) and several basic assumptions, such as a need for security, protection, privacy and overhead cover to shield him from being spotted by planes, helicopters and satellites.

So they looked for buildings that could house someone taller than 6’4” and were surrounded by walls more than 9 feet tall (both as judged by mid-afternoon shadows depicted on the satellite imagery), and that had more than three rooms, space separating them from nearby structures, electricity and a thick tree canopy.

Only three structures fit the criteria. The buildings also appeared to be the best fortified and among the largest in Parachinar. Two are clearly residences, the study states. The third may be a prison. But whatever the third structure is, it has “one of the best maintained gardens in all of Parachinar,” the study says.

While the three structures meet all six of the criteria that the researchers believe would be required for lodging bin Laden, an additional 16 structures in Parachinar appear to meet five of the six criteria. If bin Laden is not in the first three structures, the U.S. military should investigate these other buildings, the study urges.

22 Sep 2008

Gallup Massages the Numbers for Obama

2008 Election, Barack Obama, Calculators, Damned Lies, Economists, Lies, Media Bias, Polling, Polls, Sophisters, Statistics

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D.J. Drummond, at Wizbang, explains Obama’s miraculous recovery in Gallup’s Polls.


Obama’s support goes up and down, but the Liberal and Moderate Democrat support for Obama has been steady all of September. Odd, isn’t it? And support for Obama among Conservative Democrats went down four points in the last week, even though his overall support is supposed to have gone up four points. How to figure that?

Perhaps it’s in the Independents. ...

Hmmm, again. Obama gained support among Independents in the last month, but he actually lost two points among Independents in the last week. So that 4 point gain overall is still a mystery.

Nothing to do, then, but look at the Republicans. It would really be something if he’s improving support from GOP voters:

Ouch. Obama lost six points among Liberal and Moderate Republicans in the past week.

Conservative Republican support for Obama …

No change there in the past week.

Taken altogether, there is no group of political identification where Obama’s support has increased in the past week. Mathematically, therefore, there is only one way in which Gallup could show an increase in Obama’s overall support, when none of the party identification groups showed improvement for him.

Before I explain that possibility, I want to look at John McCain’s support by specific party identification groups. The man, according to Gallup, lost four points of overall support in the past week,

Conservative Republican support for McCain…

Interesting. McCain’s support among Conservative Republicans went up a point in the last week.

Wow, McCain’s support from Liberal and Moderate Republicans climbed by seven points in the past week, and yet we are told his overall support fell by four points? That is very odd, wouldn’t you say? It must have been the Independents, perhaps?

Independent support for McCain …

Stranger and stranger, McCain’s support among Independents went up by four points in the past week, just as his support from Republicans increased, yet we are told his overall support went down by four. Very hard to explain that using the math most of us learned in school, isn’t it? Well, there’s just one place left to look. Maybe somehow McCain used to have significant support among Democrats, but lost it? Let’s find out:

Conservative Democrat support for McCain …

Hmpf. Once again, a group where support for McCain went up (3%), but the overall says he went down.

Moderate Democrat support for McCain …

Steady there, so that one does not explain it.

Liberal Democrat support for McCain…

It’s only a point, but again we see McCain’s numbers in this group went up.

So, put it all together, and in the past week Obama has stayed steady or lost support in every party identification group, yet Gallup says his overall support went up four points. And McCain stayed steady or went up in every party identification group, yet we are supposed to accept the claim that his overall support went down by four points? Anyone have an answer for how that is even possible?

Well, actually I do. There is one, and only one, possible way that such a thing can happen mathematically. And that way, is that Gallup made major changes to the political affiliation weighting from the last week to now. Gallup has significantly increased the proportional weight of Democrat response and reduced the weight of Republican response.

Read the whole thing.

26 Jan 2008

Ruritania? Graustark? Erewhon?

Calculators, Economists, Language, Lithuania, Sophisters

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National Emblem of Lithuania

(Disclosure: This blog’s author is an American of Lithuanian descent.)

Reuters reports:


A commission led by the prime minister (Gediminas Kirkilas, Social Democrat) approved a marketing concept which says the country of 3.4 million people should promote itself as daring. A name change is also being mulled.

“Lithuania’s transcription in English is difficult to pronounce and remember for non-native English speakers, but the name change is only an idea under consideration,” said government spokesman Laurynas Bucalis, who led the group behind the recommendations.

No ideas have been presented yet as to what the name should be in English. In Lithuanian, the country is called Lietuva. ...

Bravery marks our history — from being the last pagan nation in Europe to a nation which sparked the Soviet Union’s downfall, and today’s resolute steps,” Bucalis said.

One tends to doubt that the Slavic Litva will be their choice.

I suppose they could go back to Chaucer’s Middle English:


A knyght ther was, and that a worthy man,
That fro the tyme that he first bigan
To riden out, he loved chivalrie,

Trouthe and honour, fredom and curteisie.
Ful worthy was he in his lordes werre,

And therto hadde he riden, no man ferre,
As wel in Cristendom as in Hethenesse,
And evere honoured for his worthynesse.

At Alisaundre he was, whan it was wonne;
Ful ofte tyme he hadde the bord bigonne
Aboven alle nacions in Pruce;
In Lettow hadde he reysed, and in Ruce.


The Canterbury Tales, Prologue, 43-54.

(A knight there was, and that a worthy man,
That from the time that he first began
To ride out, he loved chivalry,

Truth and honor, freedom and courtesy.
Full worthy was he in his lords’ wars,

And thereto had he ridden, no man farther,
Both in Christendom and in Heathen lands,
And was everywhere honored for his worthiness.

At Alexandria he had been, when it was won;
Often he had occupied the seat of honor at the dinner-table,
Above men from all nations, in Prussia;
In Lithuania he had raided, and in Russia.)

But would “Lettow” actually be better?

All this is, of course, precisely the sort of renaming-the-months, inventing-a-new-system-of weights-and-measures kind of thing modern linguistic nationalist governments like to focus on.
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Hat tip to Sandip Bhattacharji.

03 Mar 2007

Why Did the Market Tank?

Alan Greenspan, Economists, Matt Drudge, Stock Market, The Blogosphere, The Internet

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This week the stock market experienced the largest decline in equity prices in four years.

A Tuesday selloff dropped the Dow Jones Average 416 points, and a dismal week ended with the Dow losing 3.3 percent, the S&P 500 4.4 percent and the Nasdaq 5.9 percent. It even cost me money. AP

So, what really caused this hideous and dramatic market downturn?

US News’ senior writer James Pethokoukis thinks he knows.

The observant Mr Pethokoukis identifies the cause as none other than the Blogosphere’s own Matt Drudge, who on Tuesday February 27th, just about the time the stock market’s ship hit the rocks, posted the following headline:

01:28:35 Greenspan Warns of Likely Recession… *

linking to an AP article featuring the same, basically misleading, headline.

As Pethokoukis ruefully notes:


the Maestro was hardly so definitive as Drudge made him out to be. Here is what Greenspan said, according to AP:

“When you get this far away from a recession invariably forces build up for the next recession, and indeed we are beginning to see that sign. For example in the U.S., profit margins … have begun to stabilize, which is an early sign we are in the later stages of a cycle. While, yes, it is possible we can get a recession in the latter months of 2007, most forecasters are not making that judgment and indeed are projecting forward into 2008 … with some slowdown.”

Frankly, Greenspan’s remarks were hardly any more revealing than the opaque testimony he used to give to Congress.

Michael S. Malone, at ABC, read the Pethokoukis article, and agrees. He philosophizes about how we all read news these days, and how markedly the Internet is making the paleomedia obsolete, concluding on the subject of that rascal Drudge tanking the stock market for us:


That’s what Matt Drudge did, and now it seems he can move the entire world economy. When was the last time a New York Times headline did that?

All I can say is: Do us a favor, Matt, please say something positive next week.

01 Dec 2006

The Peril of Parthenogenesis

Bizarre, Calculators, Damned Lies, Economists, Lies, O tempora o mores!, Sophisters, Statistics

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Liberals have produced a study “proving” that sexual abstinence does not prevent pregnancy. It also supposedly proves that contraception is more reliable.

The Telegraph reports:


Sexual abstinence as an effective tool in reducing teenage pregnancy is a complete “myth”, the Government’s advisory body on the issue claimed yesterday.

The Independent Advisory Group on Teenage Pregnancy said that research from the United States showed that contraception was the way to bring down rates.

We’ve all heard of one case in Palestine two thousand years ago in which sexual abstinence apparently failed to work, but it’s difficult to see how researchers in the United States can really use that as an effective basis for arguing that contraception is more reliable than abstinence.


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