That's an excellent question.
What I mean by the glass ceiling cracking is that once we look at the various highest levels of achievement, women who have made it through the mid-career bottleneck, who have somehow gotten through the phase where they have raised their young children and have still been promoted even though, at that mid-career phase, there is substantial and troubling promotion disparities between women and men, those few women who make it to that high level, at that point, are equally as likely to be promoted yet higher, as their male counterparts. I have seen multiple studies that have shown that.
It's really time for us to turn our attention to the mid-career phase in order to raise a feeder pool for women in leadership. At the very top levels there are good processes. There is careful, systematic, and thorough vetting of candidates, and when women are the best candidates, they are selected. When women are the best candidates in the mid-career level, we're still seeing problems, though. Even if we have women with very high qualifications, they are experiencing gender discrimination in promotion at mid-career.