They've said in the past that the percentage of applicants who are women is the same as the percentage among accepted founders. Any bias therefore must happen a

They've said in the past that the percentage of applicants who are women is the same as the percentage among accepted founders. Any bias therefore must happen at the self-selecting stage unless the female applicants are objectively better on average. If you assume that the YC partners aren't biased (do you have any evidence otherwise?) this implies the self-selection isn't based on capability. (i.e. women seem equally confident to apply as men with the same abilities) Which pretty much just leaves us with the usual statistic of the percentage of women working in tech being low.