And as much as a person might try to shield herself from it, the possibility for the other outcome was always there. We are all living, at most, half of a life, she thought. There was the life that you lived, which consisted of the choices you made. And then, there was the other life, the one that was the things you hadn’t chosen. And sometimes, this other life felt as palpable as the one you were living. Sometimes, it felt as if you might be walking down Brattle Street, and without warning, you could slip into this other life,
