[imron]

> insinuating that some of his coworkers are, on average, at a biological disadvantage for the type of work they do

That's not what he actually said. In fact the memo had a chart and a paragraph or two specifically stating that taking average traits of a group of people and applying them to individuals was wrong and misleading due to large overlaps of traits between groups.

He was not implying anything about his colleagues that are already working for Google, rather he was pointing out potential biological differences in averages at the population level that possibly cause fewer women to enter tech (and hence making it difficult to get an even ratio of male/female employees).