This is an opportune moment to remind members of the Provisional Urban Council that their function is to sponsor entertainment, not provide it. Yesterday's episode in which council chairman, Ronald Leung Ding-bong, telephoned RTHK to lambast the Director of Urban Services, Elaine Chung Lai-kwok, while she was in the middle of an interview is one more embarrassing incident in the body's unhappy history. Time and again the council has been pilloried for the way it conducts business. It has been accused of making bizarre decisions, of unethical behaviour, inefficiency, wasting public money, enjoying too many junkets and lacking organisational ability. It is an unenviable record, but yesterday's episode takes unprofessionalism to new depths. The public airwaves are not the place to conduct SAR business, regardless of what lies behind the case. If Dr Leung and his colleagues felt that listeners were not being given the full facts about the decision to alter plans for the new Central Library, he could have contacted the programme organisers to request airtime at an early date to put his side of the story. But interrupting a radio interview to argue publicly with senior officials demeans the already fragile dignity of the council and reduces a serious issue to the level of a schoolyard row. Urban councillors have sacrificed a lot of authority due to their strange way of conducting business. Complaints have been made in the past that their meetings are disorganised and uncontrolled. Members have been criticised for chatting on mobile phones in the middle of discussions and continuing to argue after the chairman has called for silence. They made themselves a laughing stock over arrangements for silent pop concerts, bungled the booking of venues for the handover, and all too often when things go wrong, shift the blame on to the shoulders of others. It won't do. The rights or wrongs of the library row are something to be determined in a proper setting. What matters is that Hong Kong gets the best facility possible at a reasonable cost and that the council learns to operate with the decorum the office demands.