I came across a heavily armoured bunch of policeman and their paddy wagon underneath the North Bridge yesterday afternoon. They appeared to be assembling a pair of portable metal detectors. I simply couldn't imagine why.

By the time I left the Fruitmarket gallery dozens of teenypoppers were pouring out of the station in bumfreezers, frisking across the road, waltzing through the metal detectors and forming a disorderly queue outside a pair of large doors.

According to a constable I interrogated this is standard procedure and a necessary precaution for discoes aimed at the early teenage market. That struck me as terribly sad and also an extraordinary contrast to the laid back, open door, no check system employed at the school that I visit once a week and which surely some of those kids attend.