A correction from *Nature*

Corrected:    In the original text, we wrongly attributed to Enrico Spolaore the opinion that using genetic data in economics could help policy-makers to set immigration levels. He actually suggested that the work could reduce barriers to the flows of ideas and innovations across populations. The text has been amended to reflect that.

The link is here.  The earlier MR post is here.  I thank a loyal MR reader for the pointer.