Why mine coal, build power plants and power lines and thousands of devices, create vast amounts of pollution, and endanger the future of the planet thru global warming, if you can light hundreds of candles with a flick of the wrist?

• 如果你能用一个响指就点燃上百支蜡烛，那么为什么还要挖煤矿、立能源工厂、源线和数以万计的各种装置来制造难以想象的大量的污染，危及地球的未来，并且引起全球变暖呢?