I generally agree, but what I can't explain is: if it really is because they are better because of this stricter filter, I would expect the stricter filter to a

I generally agree, but what I can't explain is: if it really is because they are better because of this stricter filter, I would expect the stricter filter to apply to the promotion process too. So, why isn't it? Edit: maybe it's a sign of things getting "better". Women already working are on average better at what they do, and as people become more aware of the problem it's easier for them to become promoted because the filter isn't as strict when compared to X years ago.