[cantastoria]

But the author is stating that "woman are x" by stating they bring more "cognitive diversity" to a team. In order for this to be true, woman in fact "must" approach problems differently than men or there would be no diversity benefit (whatever that may be in this case).

[steveklabnik]

If it's not a rigorous philosophical work, people will not be very precise with their qualifiers.

For example, in the previous sentence, I said 'people' and not 'most people.' Especially in the social sciences, people assume you're discussing populations, and words like 'most' impede clarity more than aid it.

That said, I don't know the author, and they may be a gender essentialist; they do still exist.