As you say, the strong social justice momentum in the US has made it easier for people from lower class backgrounds to be admitted to top-tier schools. This do

As you say, the strong social justice momentum in the US has made it easier for people from lower class backgrounds to be admitted to top-tier schools. This does not mean that it is easy, nor common. The measurement is against a low base. The fact of the matter is that being born lower-class means that it is very likely that you will not move out of that class during your lifetime. Lots of interesting data here: http://www.pewstates.org/projects/economic-mobility-project-328061 http://www.pewstates.org/projects/economic-mobility-project-... WRT the ease of breaking into Silicon Valley, I don't have any basis for comparison. As you may have inferred, I'm a person from a lower class background who broke in during the early-mid-90s and had my life forever changed as a result. Including class mobility. My anecdotal point above was just that, an anecdotal point.