A TV show conducted an experiment: A man entered an elevator with his hands full of luggage and dropped a bag as he was getting off. The purpose of the experiment was to see how many people would help him pick up his bag. At first, only 3 out of 12 people helped him.
However, in the second experiment nine people helped him. Why was there a different result? In this experiment, the man greeted the people as he stepped into the elevator, and when he dropped the bag more people helped him.
This demonstrates that greeting people has the power to open their hearts. Greeting shows respect and consideration, and is the first step in forming relationships.