Civilization doesn't end with a bang or a whimper. It ends with a call on your cell phone. What happens on the afternoon of October 1 came to be known as the Pulse, a signal sent though every operating cell phone that turns its user into something ... well, something less than human. Savage, murderous, unthinking-and on a wanton rampage. Terrorist act? Cyber prank gone haywire? It really doesn't matter, not to the people who avoided the technological...