I can never resist those columns in newspapers and magazines that pretend to offer expert advice on everyday problems – they are so entertaining. Many of them are about what to wear on particular occasions, although here on Long Island there is no sign that this kind of advice is ever followed. In a recent advice column a woman who planned to wear an off-the-shoulder dress to an outdoor event asked how to avoid being cold. The columnist advised her to put on a shawl or a coat. I could have told her that, and I’m no expert in ladies' fashions. We are plagued by people giving advice on any and every little problem. The internet has made it a thousand times worse. Anyone, with or without qualifications but with a video camera, can post their own instructional video on anything from extreme tai chi to building a bomb. There may be as many as a million of these sites, nobody knows. The bar of expertise is set so low that I’ve been tempted to launch my own advice column, or even a video,