““A few years ago, I made a serious effort to get better about turning off the lights in my house, and my wife’s and my electricity consumption went down by a noticeable amount. But our overall energy consumption didn’t fall, because the money we saved on our electric bills helped to pay for a big anniversary trip that we took to Europe, and that means that the real impact of our reduction in household electricity use was merely to transform natural gas into jet fuel. As we get better at doing things, we do more things.””
