The top 10 per cent of the US population appropriated 91 per cent of income growth between 1989 and 2006, while the top 1 per cent took 59 per cent.
Ha-Joon ChangIn manufacturing, where mechanization and the use of chemical processes are much easier, it is easier to raise productivity than in services. In contrast, by their very nature, many service activities are inherently impervious to productivity increase without diluting the quality of the product.
Ha-Joon Chang