If you are centered on yourself, there are three axes in the space. The first one is up and down, the second one is front and back, and the third one is left and right. There is no need to learn the first two. Only "left and left" is a relative concept. The sides of the body are just symmetrical, and there is no reference point to compare. This causes some people in life to be confused about the concept of left and right...

This is discussed in a popular science article called the Wonder of Life. It not only analyzes the establishment of the concept of left and right, but also includes some popular science survey results, roughly recording the proportion of people of different ages and discusses the reasons for the left and right. Although it was not clear and clear in the end, what caused the left and right and left to left and right, it also gave Xu Yan a great inspiration.

"So that's how it is!"

Xu Yan's eyes flashed and he murmured to himself.

This paper gave him great inspiration and opened a brand new door for him.

He had known before that Jiang Dainian was not really not inseparable from the left and right, but it just took a certain amount of time to react. At that time, he still couldn't understand the reason. Now that he read this paper, he suddenly realized it.

The concept of left and right is different from the upper and lower front and back. You need to determine a reference point first to distinguish it. The establishment of the concept of left and right usually takes five or six years old. At this time, the teacher will teach children to write with their right hand. It is also at this time that they have the concept of left and right in their minds and a reference object. By comparing it with the reference object, they can distinguish left and right.

First, we distinguish left and right, and then as we grow older, a reflection forms through countless discriminations, and we no longer need to think through consciousness. Only then can we truly distinguish left and right.

Of course, not everyone can form this instinct and reflection. A large number of people can form this kind of reflection while growing up, but a small number of people, even when they are adults, cannot be separated from each other.

Of course, this is different from the left and right, unlike the left and right in the childhood. Children really do not distinguish between left and right, while adults do not distinguish between left and right, so they cannot judge the left and right at the first time. It requires a time of thinking and reaction, and Jiang Danian belongs to this.

The paper also comes with a few reports, one of which was counted in 1996. The report surveyed 2,000 people and found that about 14.6% of young people aged 17-29 were not distinguished, while after the age of 60, only about 3.2% of people were not distinguished. The same phenomenon still exists among women.

The number of people who do not distinguish between left and right accounts for such a high proportion, which was much beyond Xu Yan's expectations. He originally thought that people who do not distinguish between left and right were as rare as giant pandas. However, after reading this report, he realized that he was too taking it for granted. The proportion of people who do not distinguish between left and right is not only not low, but on the contrary, it was quite high. However, most people don't care, and many people don't even know that they do not distinguish between left and right, because this has little impact on life. When you need to distinguish between left and right, you just need to think silently for a few seconds, unless it is a specific group of people, the queues of soldiers are in this line.

Jiang Danian was not divided by left and right, and belonged to a specific group of people, so he was unfortunately regarded as a typical example and became a laughing stock of the new recruit company.

After digesting the information he saw in his mind, Xu Yan couldn't help frowning. Although the ratio between left and right will decrease sharply with age, it was useless because he had no time to wait until Jiang Danian was 60 years old, so he had to think of other ways.

His eyes flashed, and Xu Yan couldn't help but look at Jiang Danian's bed, but unexpectedly found that he was not on the bed. He raised his eyebrows and said in surprise: "Where is Danian, why haven't he come back yet?"

Hearing Xu Yan's question, Yuan Guoqing looked at him in surprise. Seeing that he was not pretending, he said, "He was stimulated by your words and is still practicing turning left and right on the playground!" As he said that, he sighed lightly and said regretfully: "Hey, Da Nian is the most diligent person I have ever met. Unfortunately, his talent is really too low and he is born with less stubborn..."

Xu Yan slapped his head and remembered what had happened before. Without even saying hello, he hurried out of the dormitory and soon came to the playground. He saw Jiang Danian spinning like a top under the dim street lights. The lights sprinkled on his slightly baby-fat face, showing endless loneliness and dullness.

Xu Yan's pupils contracted, and he couldn't help but feel regretful. Although Jiang Danian was not in the right way, he was very diligent and never lazy. This proved that he also wanted to make progress. He also wanted to stay in the recruit company. If he scolded him like that, it would definitely hurt him a lot.

As soon as he thought of this, Xu Yan strode over and said, "What effect can one practice be? Why don't I yell slogans for you!"

Hearing Xu Yan's voice, Jiang Danian suddenly looked up. Seeing that it was really him, he couldn't help but exclaim: "Xu Yan, why are you... you come?"

"I'm sorry for what happened just now, I shouldn't have scolded you like that." Xu Yan apologized.

Jiang Danian shook his head and said to himself: "No, I'm stupid."

Jiang Danian's appearance made Xu Yan feel more and more guilty. He said loudly: "On the contrary, you are not stupid at all, but you are very smart."

"Don't comfort me, I know my own affairs." Jiang Dainian glanced at Xu Yan gratefully, thinking that he was comforting himself.

"I didn't comfort you, I was telling the truth." Xu Yan said loudly, facing Jiang Danian's puzzled gaze: "Yes, you don't know where to distinguish between the left and right, but this only means that your sense of direction is a bit poor, and it doesn't mean that you are stupid."

"Isn't it stupid to be without distinguishing the left and right?"

"Of course, I just studied it and found that the proportion of people who do not distinguish between left and right is not low. 14.6% of young people aged 17-29 are not distinguished between left and right." Xu Yan paused and continued: "It's incredible. What's even more incredible is that these surveyed people are either doctors or professors, or college students, with high IQ and education level, but it is precisely such people that it is even more difficult to distinguish between left and right at the first time."

"This doesn't prove that I'm smart." Jiang Danian said indifferently and lacks confidence.

"Of course this is not enough to prove it. But have you answered the question I took before? The knowledge covered by this question is far beyond the level of ordinary high school students. But you can answer it. Isn't it smart?"

"This can't help me distinguish the left and right!" Jiang Danian said in a low voice. What he cares about the most is this.

This sentence stumped Xu Yan. Even though he was so eloquent, facing the problem of Jiang Dainian, he couldn't help but feel a little exhausted and said depressedly: "It's not possible!"

"That's still stupid!" Jiang Danian's face became dimmer.

"You can't say that. Not distinguishing between left and right can only mean that your sense of direction is a little worse, and it does not represent other aspects of you." Xu Yan persuaded Jiang Danian a little absent-minded, and said: "In fact, not distinguishing between left and right is not fixed. Research has found that as you grow older, the proportion of left and right will shrink significantly. The proportion of 17-29 years old accounts for 14.6%, and after the age of 60, this proportion has dropped to 3.2%.
Chapter completed!