I said that someone should investigate it. As in, actively. 50/50 is a null hypothesis. Another perfectly reasonable null hypothesis is the status quo. For ins

I said that someone should investigate it. As in, actively. 50/50 is a null hypothesis. Another perfectly reasonable null hypothesis is the status quo. For instance, do you know that the proportion of female software engineers is approximately the same as the proportion of females that pass the AP computer science exam in high school? This implies strongly that if there is some effect that's shifting the distribution against women, it happens before high school. That is to say, it has nothing to do with workplace culture or discriminatory hiring practices. Of course, that doesn't mean that those things aren't important - they are. But they likely aren't causing under-representation of women in CS.