Isn’t it weird how this works? You’re on an overcrowded street in the city, in a sea of people, when you suddenly, unexpectedly, out of the hundreds of faces in your visual field, see the one face of someone you know. Not only do you recognize them immediately, you also ...

Riding a relentless conveyer belt of people on Fifth Avenue in midtown Manhattan, I had to stop and step aside to stare at a reflection on a storefront’s glass window. It was of a woman lifting her child playfully on a beach — mirrored from an advertisement on the side of a bus ...