Thomas Piketty Responds to Criticism of His Data.
Six days after The Financial Times launched an attack on the data behind Thomas Pikettys much-debated tome on inequality, Capital in the Twenty-First Century, Mr. Piketty has offered his first detailed response to the newspapers criticism.
The short version: He doesnt give an inch.
In response to a request from The New York Times to further address the criticisms, which The Financial Times published on Friday, Mr. Piketty, a professor at the Paris School of Economics, wrote that his data were correct, and his conclusions stood: Wealth inequality in Europe and the United States was high in the years before World War I, fell for much of the 20th century, and has been rising sharply again in the past three decades.
He argued that many of the things that The Financial Times identified as sloppy or arbitrary were in fact considered choices, which he explained in footnotes. Reasonable people might disagree with some of his choices of how to handle the data, he says. But even where theres room for debate, any reasonable changes to his methodology would be small and not alter the broad conclusions, he suggested.
http://www.nytimes.com/2014/05/30/upshot/thomas-piketty-responds-to-criticism-of-his-data.html?hp