You'd think there are network effects at play. Case in point: the makeup of your favourite state school's CS department. The student body is 70 % South Asian,

You'd think there are network effects at play. Case in point: the makeup of your favourite state school's CS department. The student body is 70 % South Asian, 20 % East Asian, 10 % white, with at least 30 % women. The support staff (that's computer support, not secretarial or facilities) is 100 % white, and 0 % women. Make of that what you think.