Once again: compared to other STEM fields, women participate less in CS than any other field except physics. By double digits percentage more in mathematics PhDs. Statistics is almost 50/50. Several rigorous earth sciences fields --- chem and biochem, for instance --- have 50% or greater female participation. One thing all these fields have in common is that they are more intellectually rigorous and harder to succeed…
This is very misleading. Female post docs in the maths are below 30%, and computer science post docs are at about 20%:
https://www.nsf.gov/statistics/2017/nsf17310/digest/fod-wome...
There is no really justification to think that the maths "are doing better" than other STEM fields. It's certainly not a double digit difference.
> Whatever is holding women's participation in our field at or below twenty percent is artificial, and a travesty.
That's pure conjecture. There is very little evidence that this is artificial, and a few good reasons to think it's not. For instance, female participation in STEM in more repressive countries like Iran is at 50%, because it's one of a small number of careers they can choose from.
Pretty much every country in which women have more opportunities to choose from a wider selection of careers shows the exact same gendered STEM trends. Do you really believe these prejudices holding back women from STEM are somehow universal in precisely the same ways across dozens of cultures? And furthermore, that the fields that were even more sexist and old-boys-club, like law and medicine, couldn't keep women out, but a bunch of nerds with keyboards are far too scary for women? That frankly stretches credulity.
A better theory that reasonably explains all of this data is the things-vs-people hypothesis:
http://slatestarcodex.com/2017/08/07/contra-grant-on-exagger...