I had to replace a 60 watt bulb (a real light, the incandescent kind) the other day and the choice was dazzling - halogen, energy-saving, LED - guided by a chart converting watts to lumens (lumens are the new watts). There's no equivalent to 60 watts, I was advised on 55, the nearest, and of course it's rubbish, too dark. Saving energy is all very well (I'm an expert, after all!) but I confess I yearned a little for the days where the choice was bayonet/screw-in and soft pearl/harsh prison light. And in case anyone is losing sleep wondering what the hell a lumen is, here you are, it all comes down to candles on a cake.