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03/16/2010

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David Welker

I think that the idea of avoiding overreacting outliers in an important one. Of course, controlling outliers is important. Most people are not serial killers, but serial killers must be stopped. That is, even if a behavior is only exhibited by outliers, that does not mean that it is irrational to invest significant resources to combat the problem.

That said, there is the problem where highly unusual, but emotional events drive policy. We may be very well overreacting to shoe bombers and underwear bombers.

The issue with cars accellerating is also a case in point. I am not convinced that all cases are necessarily driver error. As someone trained in software engineering, I can too easily imagine too many situations where the complicated electronic systems that run our cars malfunction due to design flaws to have full faith that there are not some cases where an electronic failure causes unintentional accelleration.

That said, today I was looking at the statistics of investigations by the NHSTA on CNN. If I recall correctly, the number of accellerations investigated was less than 200 over a multiple year period and involving many more manufactures than Toyota. Something like 120 were closed, inaccurately or accurately as driver error.

Maybe some of these cases were closed in error. But regardless, the media is probably paying too much attention to this issue, considering that every year over 35,000 people are killed in traffic accidents. We probably should focus more resources on highway safety. But I am concerned that there is a risk that any additional resources will be misallocated on higher profile risks that in reality are less serious.

A final note. I philosophically disagree with people who think you can put a money value on human life. I think regulations should increase safety as much as physically practical, even if the cost of marginal lives saved ends up being very high. The limitation I would put on such safety measures has more to do with the importance of preserving liberty and freedom rather than saving money. (i.e. sky diving or driving race cars may be dangerous, but people should be free to take risks). I do not think it is possible to attach a non-arbitrary dollar value on a human life.

Anyway, I agree with Professor Bainbridge that we have to be careful not to let outliers distort public policy too much. However, to some degree, overreaction is inevitable. Humans are emotional, which is both a great attribute and a weakness. Thus people will always pay disproportionate attention to unlikely but sensational events -- like shark attacks, for example. Nonetheless, policy tends to be reasonable, although there are specific instances of overreaction.

Steve ("Professor") Bainbridge

David: I pay for the bandwidth for this blog. Unless you want to start contributing financially to its upkeep, I'm going to have to impose a word limit on you.

David Welker

Professor Bainbridge,

I apologize. I did not realize that this was bothering you. I will comment here less often.

I like the blog, obviously, and will continue reading it.

Steve ("Professor") Bainbridge

David: Just try to keep your comments shorter than the original post!

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