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The recent turmoil in Baltimore and the news of Ray Fisman’s impending move to Boston University reminded me that he (along with Tim Sullivan) had penned a column for Slate on Jan 7, 2013 entitled:

Excellent Police: What the Baltimore P.D. can teach your office about multitasking and incentives.

In hindsight, the title seems ironic. The article itself is an excerpt from the author’s book on Organizations (in the genre pioneered by Freakanomics) and can be interpreted as illustration of Goodhart’s law. The article itself does not align perfectly with the title. Apparently, what the Baltimore PD has to teach us is what not to do as the following quote suggests:

To illustrate the double-edged sword of arrest incentives, Moskos recounts the example of a fellow officer who decided to set a record for monthly arrests. His plan: lock people up for violating bicycle regulations. At night, all bikes need a light. The officer would stop cyclists in breach of the bike light rule (which was most of them), ask for ID, and pull out his pad to write a citation. Most riders, though, were biking without ID, and since all offenses become arrestable without identification, the officer’s little scheme netted 26 arrests in a single month. A record. His sergeant was thrilled, telling Moskos, “Look, I don’t know what his motivations are. But I think it’s good. He’s locking people up, which is more than half the people in this squad.”

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