To people who are flagging this article: why don't you read it? It's important, and the author is competent.
Maybe the author should have actually read the manifesto more carefully, because it is primarily an argument about Google's hiring practices and how to build the best workforce for a company, a topic which the scientific studies she cites do not address in the slightest.
About a quarter of comments on the original manifesto thread here on HN were from people who explicitly stated that there are no differences between genders and wanted scientific proof if someone were to refute their statement.