I think one thing the author needs to look at is the number of females trying to enter this field. When I was studying there was only one female in all of my co

I think one thing the author needs to look at is the number of females trying to enter this field. When I was studying there was only one female in all of my computer science related papers. But loads and loads in the papers that overlapped with the chemical engineers. Many of the female chemical engineers did a lot better than the bulk of the CS students even when the assignments involved coding. But it seemed that most of the Engineers performed better than the CS students I don't think it's that females aren't good at or don't have natural abilities equal to men when it comes to programming but for what ever reason (that I don't care to speculate on) programming is not an attractive career option to many of them. So I think this point is a little off >>At this point, anyone already familiar with the normal distribution is probably having a sensible chuckle. This is because while Google might be selective in their hiring practices, they aren’t +4 SD selective. Because there is just a much smaller number (at least in my experience) of female developers. So if one company is 50-50 male to female they would have a disproportionate number of the total population of female developers.