Professor David Nutt, the UK's chairman of the Advisory Council on the Misuse of Drugs was trying to make a point about the relative harms of drug use and how they can be equated with risks we take in other areas of life when he penned a recent article in the Journal of Psychopharmacoloy. Professor Nutt (yes, really), decided to equate an addiction to horse riding with the use of Ecstasy. He calls...