Gross Domestic Product can be a good tool to help central bankers, corporate leaders and investors. But it should be kept in its proper place.
The public has a right to know. Individuals have a right to privacy. The common good is served by both these contradictory statements, so someone has to decide how to balance them when they come into conflict. When it comes to internet search, the European Union’s Court of Justice has given the job to search engine providers such as Google. In a way, that’s a good call.
If a man is suspected of murder, arson and speeding, any prosecutor who focuses only on the last charge risks ridicule. That imagined situation has some bearing on recent criticism of Thomas Piketty, the best-selling French anti-inequality economist. The accusations are largely restricted to ways in which he has exceeded the limits of his data.