From http://krugman.blogs.nytimes.com/2011/03/06/autor-autor/
> ...the influential analysis of Autor, Levy, and Murnane a few years later, which argued that the crucial difference in terms of possible replacement of humans by machines was one of routine versus non-routine, rather than white-collar versus blue-collar, and that computerization was if anything likely to increase demand for some “low-skill” occupations and reduce demand for some traditionally well-paying white-collar jobs: