But knowing that things could be worse should not stop us from trying to make them better.

A truly equal world would be one where women ran half our countries and companies and men ran half our homes. I believe that this would be a better world.

Assuming Sandberg’s advice is completely useless for working-class women is just as shortsighted as claiming her advice needs to be completely applicable to all women. And let’s be frank: if Sandberg chose to offer career...