It isn't entirely separate either. Often increases in efficiency direct increases in consumption. This observation was made by the English economist William Sta

It isn't entirely separate either. Often increases in efficiency direct increases in consumption. This observation was made by the English economist William Stanley Jevons and is known as Jevons paradox[1]. More recently, the economists Daniel Khazzoom, Leonard Brookes, and others have analyzed this relationship[2]. [1] https://en.wikipedia.org/wiki/Jevons_paradox https://en.wikipedia.org/wiki/Jevons_paradox [2] http://www.iaee.org/en/publications/ejarticle.aspx?id=1091 http://www.iaee.org/en/publications/ejarticle.aspx?id=1091