Measurable goals for the nation

The advantage of tough, measurable goals with strong incentives attached is that people work hard to achieve them. That’s what managers do when they’re settings targets for staff, so it makes sense that John Key’s gone that route. But what can happen when one organisation is responsible for both meeting the goals and measuring their achievement?

Why wine tastes better decanted

Because it looks fancier and more expensive.

9 wine judges from France, Belgium and the U.S. tasted French against New Jersey wines. The French wines selected were from the same producers as in 1976 including names such as Chateau Mouton-Rothschild and Haut Brion, priced up to $650/bottle… Although, the winner in each category was a French wine (Clos de Mouches for the whites and Mouton-Rothschild for the reds) NJ wines are at eye level. Three of the top four whites were from New Jersey. The best NJ red was ranked place 3. An amazing result given that the prices for NJ average at only 5% of the top French wines.

A statistical evaluation of the tasting, conducted by Princeton Professor Richard Quandt, further shows that the rank order of the wines was mostly insignificant. That is, if the wine judges repeated the tasting, the results would most likely be different. From a statistically viewpoint, most wines were undistinguishable. Only the best white and the lowest ranked red were significantly different from the others wines.

See The New Yorker’s piece for all the details and make sure you decant your plonk and serve it in appropriate glasses. It makes much more of a difference to your guests’ perception of the wine than spending up on a fancy bottle!

HT: MR

The missing price of food

According to this story on Stuff, the people of the world are simultaneously threatening to eat all the worlds resources – while being obese.

If that sounds non-nonsensical to you then you would be right – this is the nature of discussing the allocation of resources without taking account of prices.

Here is their “scientific” money quote:

If populations in other countries began to take after the United States, where 36 per cent of the population is obese, the amount of energy required to support all that extra weight would increase by 481 per cent.

Now it is true, the world has finite resources, and our ability to utilise them is constrained by the set of technology available.  If everyone tries to consume lots and lots of food, it will push up the price of food – in essence we can only consume the stock of food we are able to produce, and we will produce food (instead of other goods and services) on the basis of the relative value placed on food … which is shown by the price of food relative to other goods and services.

Merely assuming that everyone will start noming the same amount of food as in the US, and then complaining that we will have obesity and be destroying the world is both unscientific and patently ridiculous.  Essentially, the argument here is that food is “too cheap” for some reason (government subsidies provides the only legitimate driver I can think of here) – if this is the issue, then we should focus on that, instead of arbitrarily attacking obesity.  Furthermore, if we don’t believe food is too cheap then we should just genuinely stop complaining.

Sidenote:  Not to be too cynical, but in what discipline does it take SIX authors to look at the distribution and averages of different populations, multiple to make all the averages equal to the highest one, and write down what the result is?  With six authours you think they could have looked at issues of allocation a bit more intelligently, no?

Bike lanes beget bicycles

Meta-research shows that more bike lanes generate more cyclists:

Buehler and Pucher found that the presence of off-road bike paths and on-street bike lanes were, by far, the biggest determinant of cycling rates in cities. And that’s true even after you control for a variety of other factors like how hot or cold a city is, how much rain falls, how dense the city is, how high gas prices are, the type of people that live there, or how safe it is to cycle. None of those things seem to matter quite as much. The results, the authors write, “are consistent with the hypothesis that bike lanes and bike paths encourage cycling.”
If that sounds overly obvious, the authors do note that previous research was somewhat scattered on this question. A few studies had found that more bike lanes in a city were associated with more cycling, though it was unclear which was causing which.

The tricky question here is the direction of causation, and it’s likely that causation runs both ways. To claim that bike lanes generate cycling we really need a plausible hypothesis for why that might happen. Thankfully, it’s not that hard: bike lanes lower the cost of cycling because they’re more pleasant and less dangerous. Lower prices mean increased demand for cycling.

OK, so building bike lanes makes cycling cheaper, which gets more people cycling. But that doesn’t mean they’re a good idea, unless more cycling is just inherently good. To decide whether it’s good policy to build more bike lanes we need to compare the cost of building them to the price that people are willing to pay to use them (plus any externalities). Hopefully that’s what’s being done, even though the local newspaper makes it sound as if the main issue is the strength of the cycling lobby!

Elinor Ostrom

I only just found out that Elinor Ostrom died last week. She is the only woman to win a Nobel Prize in economics (although Joan Robinson probably should have got one) and the magnitude of that achievement is magnified by the fact that she didn’t train as an economist! If you’re not familiar with her life then have a read of her obituary over at the NYT.

As I was taught it, her work deals with the conditions under which communities will be able to avoid a tragedy of the commons in managing common resources. Tyler Cowen said of it:

Elinor Ostrom may arguable be considered the mother of field work in development economics. She has worked closely investigating water associations in Los Angeles, police departments in Indiana, and irrigation systems in Nepal. In each of these cases her work has explored how between the atomized individual and the heavy-hand of government there is a range of voluntary, collective associations that over time can evolve efficient and equitable rules for the use of common resources.

For Ostrom it’s not the tragedy of the commons but the opportunity of the commons. Not only can a commons be well-governed but the rules which help to provide efficiency in resource use are also those that foster community and engagement. A formally government protected forest, for example, will fail to protect if the local users do not regard the rules as legitimate… Ostrom’s work is about understanding how the laws of common resource governance evolve and how we may better conserve resources by making legislation that does not conflict with law.

The talents of Steve Jobs

Steve Wozniak may be a brilliant technician, but this quote shows why Jobs was so important to Apple’s success. Wozniak is talking about how much he preferred Siri before Apple bought it.

“I start telling everyone I knew and speaking around the world about how this was the future of computing, speaking things in normal ways, feeling like you’re talking to a human,” Wozniak said of the original Siri program. When asked for an example of how Siri used to be better when it was just a third-party iOS app, Wozniak said that he used to be able to get Siri to list prime numbers greater than 87, but when he asks Siri to do that now it thinks he’s talking about prime ribs.

Yep, he thinks that it’s more useful to interpret ‘prime’ as referring to numbers than ribs. Technicians should really recognise the importance of designers!