【明報專訊】Some time ago a small village nearby was completely swept away by a sudden avalanche. The village was in the mountains just south of us, giving me much pause for thought. I listened to one of the survivors on the radio late that night. She talked of standing in her living room looking at television and thinking about going to bed, and the next second she was outside under the sky being carried away by a wall of mud and rocks. Her house had disintegrated and was completely gone.