But as is pointed out, energy isn’t, because efficiency exists. I am not denying that the economy has changed in meaningful ways; I am merely denying that we c

But as is pointed out, energy isn’t, because efficiency exists. I am not denying that the economy has changed in meaningful ways; I am merely denying that we can quantify the overall state of the economy over time such as to enable simple comparisons implicit in concepts like “growth”—and that with the caveat that the problem isn’t too severe over short periods of time.