A mom, in blue scrubs, on the phone, facing her teenage doppelgänger, without the latter's glasses. The teenager, in the sometimes way of teenagers, with exasperation, a touch of incredulity, insistence, and demand, stresses the word, "Mom!" to get her undivided attention. In turn, "Mom" meets her gaze with a surprised, unintentionally comic look. And passing this living sidewalk tableau, I smile, thinking of mothers and daughters.