I think we are circling the drain of the right approach to this problem.

If Google's pool of qualified candidates were a "proper" mix of diversity, then I don't think they would need to have the practices outlined in the manifesto.

So encouraging women to get into STEM and to facilitate pulling talent from around the globe to get them into the pool of candidates is 100% the right move to address the diversity issue.

BUT, if women don't come in the numbers you need them to and your international outreach yields mostly asians... what do you do?