[Good managers] know that people have 'good' sides and 'bad' sides and that the secret of good management is in magnifying the former and toning down the latter.
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