As a female minority in mathematics, I didn't disagree with the problem being discussed - google trying to hire 50% female candidates. How are you going to find that many qualified candidates when there are no where near those numbers in undergraduate and graduate studies? The problem needs to be solved in a bottom up manner - encouraging interest in the field from a young age, rather than top-down (hiring more females when there is a dearth of candidates). Of course more females need to be hired in order to mentor and role model for younger women, but your goal of 50% will take at least 1-2 generations to achieve. Google should instead be investing in youth programs for girls, and scholarships for young women entering STEM fields.