Goodhart's Law is one of those neat formulations that codifies something I've been trying to put my finger on for years: "once a social or economic indicator or other surrogate measure is made a target for the purpose of conducting social or economic policy, then it will lose the information content that would qualify it to play such a role."
That is, once you start measuring GDP as a way of gauging social welfare, people will start to figure out ways to make GDP go up without improving social welfare (say, by swapping dirty financial derivatives). Once Google starts measuring inbound links as a way of evaluating the importance of web-pages, people will figure out how to increase the inbound links to unimportant pages (splogging, blogspam). And once you measure fat or calorie content as a proxy for the healthfulness of food, manufacturers will figure out how to decrease fat and calories without making the food more healthful (reducing fat by adding sugar, reducing calories by adding poisonous artificial sweeteners).
The law was first stated in a 1975 paper by Goodhart and gained popularity in the context of the attempt by the United Kingdom government of Margaret Thatcher to conduct monetary policy on the basis of targets for broad and narrow money, but the idea is considerably older. It is implicit in the economic idea of rational expectations. While it originated in the context of market responses the Law has profound implications for the selection of high-level targets in organisations.
Salesforce.com and Google are two of the technology giants who have expressed interest in a possible buyout of the struggling social media firm Twitter, according to various reports. Reuters describes today’s news leak as “the start of what is likely to be a slow-rolling auction of the high-profile but money-losing social media company.” CNBC reported […]
Robert Croucher owns Hatton & Berkeley, a firm that sent “speculative invoices” to people it accused of illegally downloading the Robert Redford movie “The Company You Keep” — letters so egregious that Lord Lucas described the company as “scammers” and the letters as “extortion,” urging Britons to “put them in the bin.”
Normally, companies that give “performance pay” to their execs can only write off the first $1M: but when Wells Fargo gave $125M to Carrie Tolstedt (shown above receiving American Banker’s 2010 award for being “the most powerful woman in banking”) as she “retired” after overseeing a 5-year period in which Wells Fargo’s top brass were […]
With the iPhone headphone jack having gone by the wayside, we’re excited about the addition of the FRANKLIN Bluetooth Headphones in our store. These headphones are foldable so they’re easy to carry around, but most importantly, they pack impressive sound. Our biggest struggle with Bluetooth headphones is the worry of them dying at the worst moment. This pair lasts an impressive 8-10 […]
Evan Kimbrell, founder of the digital agency Sprintkick, recently released a series of online courses that feature some of the best advice we’ve come across. These courses are well worth your time, and will save you from making many typical mistakes down the line if you ever want to start your own business.With this Business […]
Handy is the most convenient solution we’ve found for booking a house cleaning at the last minute, and they do a really great job. It’s as easy as heading to the site, selecting a date and time that works for you and the number of rooms in your home. We’ve even scheduled emergency cleanings as soon as the following day. […]