October 19, 1989, 5:04 PM in San Francisco. When the Loma Prieta earthquake rumbled, my uncle was on the 32nd floor of a swaying high rise. Of course the phones went dead, so he couldn't call to make sure his daughter was safe. The elevators didn't work, so when the swaying building stood straight once again, he hiked down the stairwell to his car. Out on the street, the stoplights were not functioning whereup…