When a small earthquake passed through New York on a hot afternoon in August 2011, I was home from work, reading a novel in bed. The bookshelf above my feet rattled, and for a few seconds the building went liquid. The rattle I immediately attributed to my roommate’s sex life, but when the walls seemed to slide my annoyance turned to fear. Our landlord was a former building inspector, which we understood to mean our apartment had never been officially evaluated. “Is the building collapsing?” my roommate called out from the living room. “I think so!” I replied. We ran out into the street and stood on the sidewalk barefoot; I looked down to find myself clutching, of all things, an uncharged laptop.