this post on the interaction of markets with discrimination, and this post, which has a very partial explanation of why so many people drop out of science and engineering.
Update: A correction! I avoided explicitly linking to the author of the original article, because I find the sort of twitter insults and witch hunts that often pop up to be unconstructive, and this is really about what's right and not who's right. The author obviously disagrees because I saw no end of insults until I blocked the author.
Charlie Clarke was kind enough to wade through the invective and decode the author's one specific claim that about my illiteracy was that footnote 3 was not rounded from 110.3 to 111. It turns out that instead of rounding from 110.3 to 111, the author of the article cited the wrong source entirely and the other source just happened to have a number that was similar to 111.