The great pot experiment

SINCE late 2012, two states have voted to legalise marijuana for recreational use; licensed shops in Colorado and Washington now sell it to anyone who wants it. Six states have legalised the drug for medicinal use, bringing the total to 23. Most Americans now say they favour legalisation (see chart 1). The House of Representatives has voted to defund federal raids of medical-marijuana facilities in states that allow them. Serious newspapers (though not, alas, this one) have appointed pot critics. And an Oklahoma state senator has campaigned to legalise the drug because in Genesis 1:29, “God said, ‘Behold, I have given you every herb-bearing seed...upon the face of all the earth’.”