Search the Site

Freakonomics Blog

Observational Detectives

Lisa Sanders, the diagnosis columnist for New York Times Magazine (and, I should disclose, my close friend), has just published a truly interesting book, Every Patient Tells A Story, on how good doctors go about making difficult diagnoses.



Grazing the Non-Commons

Central Texas is having its worst drought in 50 years, and since May we have been limited to twice-a-week lawn watering. With things getting worse, on August 24 the limit goes to once per week. I’ll abide by the limit, but I’ll set my sprinklers to run longer each session than during the twice-a-week watering.



We're Blegging You: How Has Freakonomics Changed the World?

Next week, after more than four years in, Freakonomics is being published in the U.S. in paperback. We’ve been asked to go on TV to talk about the effects (if any) the book has had, whether in the realm of crime-fighting or baby-naming or book-writing. We need your help in gathering good examples to talk about. Nothing is too large or too small, in your life or the lives of others. Thanks in advance.




Zombie Mathematics

While a zombie attack is one of the least likely ways the world could end, four Canadian mathematicians did a mathematical analysis of a hypothetical zombie outbreak to determine the likelihood of human eradication, should such an attack ever occur.



Cash, Credit, or Torches?

If you live in Brooklyn and you’re sick of looking at George Washington’s face every time you buy coffee, things may be looking up.



Resetting America: A Q&A With Author Kurt Andersen

Kurt Andersen sees the economic recession as a one-time opportunity for America to “get back on track.” In his new book, Reset, he explains how he thinks Americans can use the crisis to “reset” and reinvent old systems and ideas and “focus more on the things that make us authentically happy.”



Food-Chain Reaction

Slums are larger and more dense than two centuries ago — and they’re creating “causal chains that weren’t there before,” says urban historian Mike Davis.



Hot-Dog Vendor Economics

A Slate article mentions that the annual price of a hot-dog stand license near the Metropolitan Museum of Art in New York City is $362,201. Licenses are very limited and are bought at auction. The price presumably reflects the economic rent associated with the particular site (the price would be a lot lower in the middle of Central Park). Yet at a fixed cost of $1,000 per day, how can a hot-dog vendor make enough money to cover his variable cost, including the value of his own time?



Bicycle Inflation in Paradise?

When I arrived in Portland last month, the first thing I wanted to do was buy a bike and get around the way the locals do. Since I wouldn’t be in town for too long, and it wasn’t clear that I’d be able to take the bike with me when I left, I wanted something extremely cheap.



Where the Real Chinese Food Is Hidden

Jason Kuznicki at Positive Liberty offers some hypotheses as to why Chinese restaurants have “secret menus” that only Chinese people seem to know about.



The Suburban Makeover

We’ve discussed before what suburbia might look like in the future. Dwell and Inhabitat.com asked designers, planners, and engineers to submit their ideas for a suburban re-do (ReBurbia), and invited readers to vote on the top 20 finalists.



Captain Steve Answers More of Your Airline Questions

A while back, we began soliciting reader questions for Captain Steve, a pilot with a major U.S. airline. He answered his first two batches of questions here, and is back with another round. Please leave new questions for him in the comments section below.



India's Empties

We posted earlier about how a blogger named Dave Prager tried to figure out why the buses in Delhi kill so many people. Now he’s back to explain how Delhi’s upscale alcohol ads create demand for his empty liquor bottles, and give his maid a nice side income.



Cash for the Climate

Edward Glaeser (over at the Economix blog) and I are doing a few posts on the high-speed rail (HSR) component of the economic stimulus package (find the first post here). HSR promises to reduce carbon emissions, but so does the other hot transportation policy at the moment, Cash for Clunkers (CFC). Under CFC the federal government is providing rebates to consumers who trade in their vehicles for new ones that get better gas mileage. Which program is the more effective way to cool down the ice caps while heating up the economy?



Quotes Uncovered: Who Said No Crisis Should Go to Waste?

A while back, I invited readers to submit quotations for which they wanted me to try to trace the origins, using The Yale Book of Quotations and more recent research by me. Hundreds of people have responded via comments or e-mails. I am responding as best I can, a few per week.



How to Call Someone's Bluff and Keep Your Gold

I’m watching Deadwood, the remarkably well-written HBO series of a few years ago. In Episode 16, several wealthy townspeople, including the hotel owner, are spreading rumors that the gold field claims will soon be voided.



The Value of Statistics

Last week’s excellent article on the just one sign of the market value of number crunching. As I wrote in the afterword to the paperback version of Super Crunchers:



Pick Your Apocalypse

Slate’s interactive End of America site presents 144 possible ways the U.S. could meet its demise and lets you choose your favorites. We’ve covered quite a few of them on this blog



Genetics Entrepreneur Anne Wojcicki Answers Your Questions

Last week we solicited your questions for Anne Wojcicki, co-founder of the “personal genetics” company 23andMe. Among your interesting questions: are 23andMe’s genetic results taken seriously by doctors? Should children have the procedure done? Will insurance companies engage in genetic profiling?
Thanks for the good questions and to Wojcicki for the compelling answers.



Reduce, Reuse, Recycle, Cremate

Crematoriums in Denmark want to recycle their “waste heat” by distributing it into local heating systems. The Danish Council of Ethics didn’t have a problem with the idea, as the Economist reports, but it did advise that “burning granny especially to warm radiators would be indecent and illegal.”



Pay-If-You-Go Prisons?

Inspired by Bernie Madoff’s 150-year prison sentence, New York state assemblyman Jim Tedesco introduced a bill that, as the Economist reports, would establish a “pay-if-you-go” model for prisons, whereby wealthy inmates pay for their own incarceration costs, thereby easing the burden on taxpayers.



New York City Without Its Subway …

… would probably be dotted with parking lots the size of Greenwich Village in order to accommodate all the daily commuters driving into the city on the equivalent of 84 Queens Midtown Tunnels, predicts Michael Frumin at the Frumination blog.



The Difference Between a "B" and a "B"-Plus

Kvetch, kvetch, kvetch. Classes start in three weeks, and the bosses have mandated a revolution at UT-Austin: We can no longer give only A, B, C grades, but must give +/- grades too, such as A, A-, B+, etc. With 600 students this Fall, I can imagine a big change in griping.



FREAK Shots: Far-Flung Nuts

So does this make you want to go locavore, since so much fuel was likely used in transporting them around the globe, and maybe they’re not the freshest almonds?




The Rejects' Journal

As Levitt once noted, getting a paper published in an academic journal is an often comically belabored process, and of course it’s even worse when the paper is rejected.




More on the Stimulus

Justin Wolfers argues for more stimulus spending, highlighting a recent debate between himself and Reihan Salam on CNN.



Quotes Uncovered: From Soldiers to Farmers to Poets

A while back, I invited readers to submit quotations for which they wanted me to try to trace the origins, using The Yale Book of Quotations and more recent research by me. Hundreds of people have responded via comments or e-mails. I am responding as best I can, a few per week.