7. Understanding Communities

“She isn’t my wife really. We just have some kids . . . No . . . No kids. Not even kids. Sometimes, though, it . . . it feels as if we had kids. She isn’t beautiful, she’s . . . easy to live with. No she isn’t. That’s why I don’t live with her.”

—DAVID HEMMINGS AS THOMAS IN Blow-Up (1966)

Part of my exercise regimen is to walk between five and six in the morning. Except for an old man I often see, I have the sidewalks to myself. As far as I can tell, he lives in a nearby park, or at least that is where he spends most of his time. When I pass him on the sidewalk, I wave, and he waves back. That is the extent of our social interaction. It is as though we are saying, “We are here sharing this space in the city, and that ...

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