Why do the women keep leaving? Sure, we all know the statistics — just 17 percent of law firm partners are women, a figure that’s been stuck in the same place for years.

And we know that in many ways the structure of law firms is about as practical for women with families as a diaper bag flung over the shoulder of a Prada suit and about as flexible as a toddler having a temper tantrum in the grocery store checkout line.