Recently, I was waiting for friends at a busy Tokyo train station. I arrived early; they were 40 minutes late. Resigned to my fate, I found a comfortable place to stand. Observing hundreds of busy people,  I wondered what their lives were like. Different ages, heights, weights, social status; some limping, some in wheelchairs, some blind, some disheveled or destitute. I was curious as to how they were surviving. Intriguing watching senior citizens smiling, bowing, greeting ea