And test predictions are based on studies of small, mainly white, American populations.

CNN: Get ready for the risks of genetic testing

And though, being an economist, he could not help muttering about the imperfection of societies and systems and the absurdity of predictions and though, being an inveterate puncturer of himself, he would demand a paternity test if anyone called him the father of the deregulated world his adventures with airlines led on to the freeing of the trucking, telecoms and power industries, and heralded the Thatcherite and Reaganite revolutions.

ECONOMIST: Alfred Kahn, deregulator, died on December 27th, aged 93