What are “quack policies”? The name has been coined by the writer Jamie Whyte for policies that are claimed to be based on evidence but which do not stand up to scrutiny. Examples are given in a publication of that name issued by the Institute of Economic Affairs. Leading examples he gives are the attempt to impose a minimum price of alcohol, the attack on “passive smoking”, the global warming crusade and “happiness engineering”. The fact the book is published by the free-market IEA and that the policies he scrutinises find support in the left and centre of the political spectrum (including UK Prime Minister David Cameron) may cause many to ignore it. The loss will be theirs.