Bedbugs. Yet another reason to hate Rachel Carson (aside from 800 million dead of malaria).

The history of malaria is interesting, in a macabre sort of way. A hardy parasite spread by insects, the cause of malaria was unknown for most of human history. The name we know today comes from the French phrase for "bad air," reflecting the common observation that malaria cases peaked around swampy areas. Their solution in Algeria - drain the swamps - was effective, but costly.

Malaria, the organism, is extremely difficult to kill. However its crucial vector, the mosquito, is vulnerable when combated with the correct chemical tool. In 1939, Paul Mueller discovered just that: DDT. This insecticide is cheap, effective, and quite safe for humans. Some claim it causes cancer, but their evidence has since been disputed. By comparison the malaria problem is undeniable and catastrophic, with millions dying on a yearly basis. As said by Wenceslaus Kilama, the Chairman of Malaria Foundation International "this is like loading up seven Boeing 747 airliners each day, then deliberately crashing them into Mt. Kilimanjaro."The imagery is hard to overlook.

The history of bed bugs is less interesting, but in a much more annoying way. Like malaria, bed bugs have plagued humanity since the dawn of time. They cause irritation, swelling, and definitely a terrible night's sleep. We're still combating this invasive parasite as well -- a national Pest Convention is meeting to discuss the issue. Exterminators have been caught by surprise as bed bug infestations have sprung up in the last several decades across the country, and surprisingly little is known about them.

What do malaria and bed bugs have in common? They've both been increasing since DDT usage was halted thanks to Rachel Carson's book, Silent Spring. Some people claim that bed bugs' modern upsurge is just due to increased travel. I think the facts say otherwise, given the almost total eradication of bed bug cases during the heyday of DDT's popularity. That issue aside, there's no disputing the deadly impact of malaria -- a plague that can easily be prevented by regular spraying of DDT.

The public outcry prior to the DDT ban is a classic example of action taken without full understanding of the consequences. Enough has been written on this already, so I won't belabor the point. Ultimately, Rachel Carson isn't the only one to blame; fault rests with the politicians and lobbyists who listened to her before all the evidence was in. Now, the public at large is feeling the consequences from decisions made forty years ago. With bed bugs infesting the Big Apple, maybe it will get people itching for change in our national pest control priorities.

Statistical Fallacy #002: Confusing Correlation with Causation. Does a strong handshake really make you live longer?

Even highly educated and intelligent medical researchers aren't immune to statistical errors. A recent study in the British Medical Journal referenced 33 other studies on personal mobility and life expectancy, and compiled their results. According to Reuters, 

They found simple measures of physical capability like shaking hands, walking, getting up from a chair and balancing on one leg were related to life span, even after accounting for age, sex and body size. 

While the phrase "accounting for age, sex and body size" makes this process sound very objective and scientific, there are obviously a lot of other factors that can play a role in life expectancy. Personal differences, such as leading a more active lifestyle, could cause someone to have both more hand strength and also better health in general which contributes to their longevity.


While statistics saying "the death rate over the period of the studies for people with weak handshakes was 67 percent higher than for people with a firm grip" sound very dramatic, it's hard to say if that relationship is reverse-causal; in other words, having a weak grip may signal your lifespan will be short, but will improving your grip really make you live longer? Probably not, which suggests it's far more likely that a common variable - for example, sitting on the coach all day - causes both weak hands and a lower life expectancy.


Common sense says that working with a stress ball or doing forearm exercises to develop a crushing handshake probably won't substantially reduce your chance of death from heart disease, cancer, stroke, or the other leading causes of death for adult Americans. However, this is exactly the impression given by the Reuters article title "Want to live longer? Get a grip!" Heavens forbid someone took this seriously and developed gorilla-like forearms only to find out their fitness investment had been in vain.

Private funding for prison rehabilitation -- latest British innovation.

Say what you will about eccentricities in the United Kingdom's political structure, they aren't afraid to try some new things. Particularly, in the area of penal reform.The U.K. prison system is struggling with extremely high recidivism rates; according to the BBC "60% of criminals who serve short sentences reoffend within a year of leaving prison."

So what's the plan? Much like purchasing a bond, investors can put money into the rehabilitation program (currently limited to male inmates with sentences less than one year). If reoffenses among the subject group drop by a specified amount, the investors receive dividend payments.

Quoting the BBC:

Attention Undergrads -- you're still paying for all those classes you skipped.

Graph made by Mark Kantrowitz of FinAid.org

We've reached a momentous, but little celebrated moment in financial history. Credit card debt has been surpassed by student loans (including both federal and private). Let's give a big 800 billion cheers for education!

You can see this trend in the graph to the left. Notice how in 2008, credit card debt peaked and has now declined, while student loan debt has gone up at a steadily increasing rate. The modern family unit (mom, dad, and the federal government) have been paying a larger and larger bill, and for those who can't afford it, the slack has been taken up by private lenders. Unlike credit card bills, which fluctuate with the larger economic climate, student loan debt just kept going up and up.

Education is always a good investment, right? With costs of tuition rising by 8% per year, one might expect students would soak up every valuable minute of classroom instruction. That hasn't been the case. While tuition rates have gone up steadily, student attendance has gone down. This trend has been especially strong in recent years. According to Blair Hedges, a biology teacher,

The 'Landes Law' on imperialism and its domestic corollary.

Historian David S. Landes

In his New York Times bestseller The Wealth and Poverty of Nations: Why Some are so Rich and Some so Poor, David Landes claims

"a law of social and political relationships, namely, that three factors cannot coexist: (1) a marked disparity of power; (2) private access to the instruments of power; and (3) equality of groups or nations." [63]

Penned in 1998, this writing still sheds some interesting light on our recent foreign policy adventures in Afghanistan and Iraq. Conspiracy theories and "blood for oil" slogans aside, private companies did have a large involvement in immediate invasions as well the as follow-up occupations. Along with industry lobbying and corporate connections in the White House, condition (2) seems to have been justified. The marked disparity of power and inequality between groups hardly even need discussion.


On face, the principle at work here seems accurate. As Landes argues, "Where one group is strong enough to push another around and stands to gain by it, it will do so." However, this incentive isn't limited to foreign policy. I'll propose the following corollary to Landes Law:

Welfare State Corollary: three factors cannot coexist: (1) a marked disparity of specialized interests; (2) private access to the instruments of government; and (3) national government running a balanced budget.

In other words, when an interest group (e.g. farmers, doctors, bus-drivers, etc.) has enough political influence, it will push others around through the legislative process, as long as it stands to gain by doing so. When a multitude of such interests exist, satisfying all their demands will flout any efforts at a balanced budget (unless taxes are incredibly high, and there's an interest group against that too).

While Landes' Law poses a serious challenge to efforts at global peace, the Welfare State Corollary has implications on our current political system's ability to respond to the current financial crisis. I'll leave it to the reader to decide on the accuracy of this analogy.

Statistical Fallacy #317: Holding Constant that which Changes. See: 'median household income'.

Alternately, 

"Torture numbers, and they'll confess to anything."*

  Our inquisitionist of the day hails from Bloomberg. In an article today, Venessa Wong wrote the following:

While many Americans dream of a windfall that will take care of their financial needs for life, the sobering reality is most of us are not getting far: U.S. Census Bureau data show median household income barely changed in the 10 years following 1998 as the price of housing and other goods increased. In consumer price index-adjusted dollars, the median household income in 2008 was $50,303, compared with $51,295 in 1998. [Emphasis added.]

 What's wrong with the above? In a fairly common maneuver to paint a doom-and-gloom image of the times, average household size is treated as a constant to compare incomes over time. That just isn't the case.

The problem with using 'median household income' as a measuring stick is that it's actually a factor of two other variables: combined income, and number of people per household. The latter aspect is conveniently overlooked by pessimists, who are looking to demonstrate a negative trend over time. When everything is considered, a different picture emerges.

Busting the 'egg scandal' wide open.

These eggs were not broken to make an omelet.

Recently, Wright County Egg and Hillandale Farms, both located in lovable Iowa, have come under fire for "poisoning" the public with salmonella from their eggs. An egg source for 13 different retail brands, this news has rocked supermarkets nationally, and an even wider recall might be in the works.

"The history of ignoring the law makes the sickening of 1,300 and the forced recall of 550 million eggs shockingly understandable," says William D. Marler, a Seattle attorney representing someone who became ill from a 'dangerous' egg salad. (They're all dangerous in my opinion, especially on a hot day).

The numbers above got me wondering. What proportion of the recalled eggs were contaminated with salmonella? If 550,000,000 eggs resulted in 1,300 people becoming sick, the chance of any one egg making someone ill is .000236% . Eat a whole dozen, and your odds skyrocket to .0028%, a roughly one-in-35,000 chance of becoming ill from a tainted egg.

Surely, if you're one of those 1,300 people, hearing the numbers won't cure your stomach-ache and flu symptoms, but it should be reassuring for the other 99.99% of the population. Salmonella can be dangerous for the very young and very old, but many cases are so mild they aren't even reported.

Don't recycle your green glass, plastic or paper. That's right, trash it for the planet.

Recently in the news, the Mayor of New York expanded the state's recycling program to encompass more plastics; supposedly, this will divert 8,000 tons of plastic from landfills each year. My question is, what's so bad about throwing garbage in the trash?

With all our trash in the Dakotas, as it should be.

Maybe this makes sense to New Yorkers -- their state did birth the "trash crisis" myth which has followed American politics home like a stinky dog. However, recycling has remained a national craze, even though landfills are generally cheap and available across the country. Fun fact: If all American trash were brought to one huge landfill, and "you keep filling up this landfill for 100 years, and if you assume that during this time the populations of the United States doubles, then the landfill will cover about 160,000 acres, or 250 or so square miles, with trash 400 feet deep." Source. That may seem like a lot, so to put it in perspective, see the attached diagram which compares the 3,717,813 square miles of the lower 48 to this hypothetical landfill. Doesn't look so big now, does it?

Recycling colored glass, paper and plastic isn't just unnecessary; it's also inefficient. Let's count the ways:

Money Melts the Pounds Away -- an in-depth look at The Biggest Loser outcomes.

No, this is not veiled commentary on my social life.

Obesity is a growing issue in the industrialized world generally and the United States in particular. The science behind obesity is still developing, but the popular culture response has already begun. Reality television, which has previously attempted to resolve our lovelessness, joblessness, and lack of fashion has now begun to confront the ‘American lifestyle.’ 

Television network NBC’s hit reality series “The Biggest Loser” takes a group of overweight individuals and sequesters them in a large housing and gym facility. There, under the oversight of expert personal trainers and medical personnel, they attempt to lose weight as quickly as possible. Taking place within a competitive team setting, at the end of each week the people who lost the least weight risk being eliminated. At stake is $250,000 cash for the winning player and a $100,000 prize for the eliminated player losing the most weight by the finale.

The Biggest Loser's game-show world bears only loose relation to the reality of an average person looking to drop a few pounds. However, its dramatic format and inspiring message have proved a global success, with the creation of Biggest Loser UK, Biggest Loser Australia, and Biggest Winner Arab (to name a few). The American version of the show has produced nine seasons since 2004, with a tenth being filmed as of this writing. 

 

With each contestant’s weight loss announced weekly, this television series provides a wealth of data on weight loss under ideal and controlled conditions. With 6 to 8 daily hours of exercise, a rigidly structured diet organized by top-rate personal trainers along with a strong monetary incentive, participants on The Biggest Loser have every advantage in losing large amounts of weight. Some drop over twenty pounds, or over 5% of their body mass, in a single week. The vast majority go on to change their lives by adopting healthier eating habits and frequent exercise. These results demonstrate weight loss at the absolute limit of human capacity. 

 

While every participant on The Biggest Loser puts in a monumental effort to lose weight, there can only be one winner. Contestants experience different outcomes in weight loss in spite of a generally high standard of effort. There have been many debates in the bio-medical field on whether obesity is caused by genetics, culture, age, or something else entirely, and a consensus has yet to emerge. With its wide demographic variety, The Biggest Loser provides an opportunity to test how these differences impact optimal-scenario weight loss. 

The case for a private military -- let the market take a shot.

At the end of a previous blog post, I speculated on the possibility of an all-private military. The idea: instead of having the DOD do the work of recruiting, training, and then deploying our military personnel, the federal government could just handle the top-level strategy then hire out for troops to implement it. Unconventional? Yes. Effective? Possibly.

Currently, the U.S. army is staffed on an all-volunteer basis. People have to willingly choose to put their life on the line. That system just isn't working -- the military is facing a serious recruitment shortage. When you look at the numbers, it's obvious why:

Why won't the U.S.P.S. just go out of business? Oh wait, they're not allowed to.

Ah, the Postal Service. Famous for friendly service, reasonable fees, and murderous rampages. In spite of birthing the saying "going postal" the USPS has still taken the coveted "most trusted government agency" for the last five years (probably because you have to give them your things before they break and steal them, unlike most other federal agencies). What I wonder is, if everyone trusts them so much, why can't they turn a profit? Let's find out.

Is Hoarding a disease, or just un-economic? Some advice for the cluttered.

Who doesn't need 70,000 empty beer cans?

People with their finger on the pulse of reality TV (like myself) are shocked and disgusted by the spate of shows surrounding the issue of "hoarding." For the unexposed: the premise of such a show is that people with a serious clutter problem ("hoarders") ask for help from the reality television deities to clean their places. Then, the audience gets to be amused and disgusted as the hoarder whines, moans, and otherwise impedes the cleaning crew from taking out the junk. Apparently it's a successful formula, because several different networks are now doing "Hoarder" themed shows.

Economics does a lot of theorizing about consumption, and generally the assumption is that more = better. Presumably, a person will only buy something if it makes them happier or brings them some sort of utility. TV about hoarders is a case study in diminishing returns from possessions. In other words: the first 10 antique lamps and teddy bears were wonderful, but after there are 500 and you're sleeping on a single chair while living in fear of death by trash-alanche, then more stuff has become a dis-utility.