On page 3, he clearly discusses overlap between men and women even with biological differences. He did not write in absolutist terms.

https://assets.documentcloud.org/documents/3914586/Googles-I...

Note, I’m not saying that all men differ from all women in the following ways or that these differences are “just.” I’m simply stating that the distribution of preferences and abilities of men and women differ in part due to biological causes and that these differences may explain why we don’t see equal representation of women in tech and leadership. Many of these differences are small and there’s significant overlap between men and women, so you can’t say anything about an individual given these population level distributions. _______________________________________________________