On the bus, a man opens his mouth wide and yawns. Several people around him also yawn. Some people don't yawn because they're not suggestible. Who are the most suggested? You can check this out with a simple test. Have a person extend their hands horizontally, palms up, and close their eyes. Tell him that he now has a hydrogen balloon tied to his left hand and is floating upwards; He had a large stone tied to his right hand and it was falling down. After three minutes, look at the gap between his hands. The greater the distance, the more suggestive.
The main content of the text is that people are easy to be implied by information from the outside world, which leads to the deviation of self-perception.