As I said, "It's the classic groundwork for an argument of scientific sexism". Yes, it's reading between the lines, but the implication is there and clearly intended to be there. Not only is he implying it, he is implying it using the exact same arguments that have been used in neuro circles for years. There is an explicitly sexist context for these arguments that is not present in the memo but which nobody making those arguments could have been completely unaware of.