A leisurely old man stood by a bustling street in the heart of the city. Countless pedestrians rushed past him, like flocks of seagulls flying over a grounded ship. With wise eyes, the old man scanned the faces of the crowd, sighing softly from time to time. Occasionally, he would approach a pedestrian, politely stop them, whisper something in their ear, place an item in their hand, and walk away with a smile.
Late at night, the old man returned to a club and told the manager, "I have distributed the rewards to everyone I identified."
"What happened?" the manager asked.
It turned out that this wealthy club had come up with a spontaneous idea: They set aside a large sum of money and commissioned an expert in facial expressions to wait in the city's busiest area for a day. Every person judged by the expert to be truly happy would receive a prize.
The manager remarked, "Well, you did a great job. However, I imagine that money must not have been enough, right?"
The old man replied, "I haven't even used a fraction of it. All day long, thousands of people passed by me, but those I could confirm were truly happy were very few."