Recording Hall.

Zhou Yun was full of question marks, thinking that she was also a top student in science and engineering, why did Li Fan have no idea what he said?

She asked, "Teacher Li, I still don't understand, what is the chaotic phenomenon?"

I can't explain this in detail, otherwise this show is only 30 minutes long, and it is not enough at all.

There is no chaos theory in this space-time, and if Li Fan explains it in detail, he can directly open the course, so he summarizes it simply.

"Chaos theory is a method of both qualitative thinking and quantitative analysis, which is used to explore the behavior of dynamic systems that cannot be explained and predicted by a single data relationship, but must be explained and predicted by a whole, continuous data relationship. ”

In the recording hall, there were question marks, and I didn't understand them.

"Uh......" Li Fan hesitated slightly, "Let me tell you a vivid example, which is the butterfly effect I mentioned earlier."

What is the butterfly effect? It's a bold hypothesis.

A butterfly in the South American rainforest, with a few occasional flaps of its wings, could cause a tornado in Texas two weeks later. ”

The audience couldn't help but laugh, how could it be?

Li Fan didn't mind, if he hadn't studied chaos theory and didn't get universal recognition in his previous life, then anyone who heard about the butterfly effect for the first time would just laugh.

Normal!

"Butterflies just flapping their wings, how can it cause a tornado in Texas?" Zhou Yun wanted to chase after him, "Then if I sneeze, will Mount Enaptina erupt?" but didn't say.

Li Fan explained: "The movement of a butterfly's wings causes changes in the air system around it, and causes the generation of weak air currents, which in turn cause corresponding changes in the air or other systems around it, thus causing a chain reaction...... Finally, a tornado led to Texas.

This is the butterfly effect, which is an extremely important concept of chaos theory. ”

Everyone in the audience was smiling, and after listening to Li Fan's speech at this time, everyone had only one feeling - absurd!

It's ridiculous!

Li Fan continued: "There is a ballad in the West:

Lost a nail, broke a shoe;

broke a farrier and broke a warhorse;

broke a war horse and wounded a knight;

wounded a knight and lost a battle;

Lost a battle, lost an empire.

In our country, there are the following words: if you are not careful, you will lose everything, if you miss a thousand miles, if you miss a thousand miles, if you are a dike for a thousand miles, you will collapse in an anthill......

These are all related to the butterfly effect, of course, although exaggerated, but the purpose of exaggeration is to highlight the inner connection of everything.

……”

In the audience, in the expert advisory group, Cui Mingyuan of the Academy of Sciences couldn't help laughing, Xie Liwei couldn't help but shake his head slightly, Mu Zi frowned suspiciously, and she said in her heart: Teacher Li shouldn't be at this level? This is too exaggerated and absurd, right?

Zhou Yun said: "Teacher Li, it seems that everyone doesn't quite recognize your chaos theory and butterfly effect. ”

"Well, I understand, this is not something that can be explained in a few words," Li Fan smiled indifferently, "Later, if I have time, I may publish a book for this and explain it in detail." ”

Publish a book?

Zhou Yun was very surprised, and said in her heart: This can also be a book?! By the way, why did you talk about the "mythological theme" of butterfly wings, oh, I asked Li Fan before, for the true knowledge of Li Fan to take full responsibility, what does Li Fan think, and then Li Fan said that this should be in line with the butterfly effect.

Zhou Yun decided to pull the topic back again, from "absurdity" to the normal topic. She said: "Then Teacher Li, in the face of Teacher Zhenzhi's criticism that you need to take full responsibility for your remarks, do you have anything to say?"

"I don't have anything to say!" Li Fan smiled lightly.

"Huh?"

"Let's move on to the scientific topic and talk about food restraints!"

Li Fan really has nothing to say!

A woman tripped over a rock while running, injured her ankle and was taken to the hospital, where she met her husband accompanying a girl to have a baby...... The result was a murder. The blame for this sin cannot be blamed on the stone.

Film critics have widely criticized the phenomenon of small fresh meat cutouts...... Eventually, a certain movie collapsed at the box office. Film critics, are innocent.

The economy of a tourist city has declined...... fǎn rot, is innocent!

Even if a butterfly does cause a tornado somewhere because it flapps its wings, you can't stop a butterfly from flapping its wings for fear of a tornado!

Therefore, Li Fan is innocent, and his true knowledge is excessive.

The reason why Li Fan didn't talk about this matter was because Li Fan couldn't fight with him about this kind of thing, which was a bit damaging to face. However, the food is compatible, but it is possible to have a good chat.

Zhou Yun hesitated for a moment and said, "Okay, let's move on to our topic today: whether food is good or not."

Now it's obvious that Mr. Li and Mr. Wang Meng think that food does not exist, and Mr. Zhenzhi and Mr. Ren Hai think that there exists, audience, what do you think? Please press the selector in your hand, the red light is to believe, the green light is negative, start. ”

When the selector is pressed, the red light on the screen instantly lights up, and there are very few green lights!

"Well, there were 193 people in the audience, 150 people chose to believe in food, and 43 people chose not to believe it.

First of all, please talk about the reasons why you question the invalidity of food restraint. ”

Li Fan made a "please" gesture to Wang Meng, and Wang Meng suddenly became even more nervous and excited, after all, it was the first time to be on TV, and he was still in this state of tension soon.

Wang Meng stumbled and said, "I'm not...... Not a question, but, I think, I firmly believe, that there is no such thing as food restraint!"

"Why?"

"Because, that, there is no scientific basis for food restraint to support it!"

Zhou Yun looked at Zhenzhi/Ren Hai: "What do you two think?"

Zhenzhi slightly showed a hint of arrogance: "Teacher Wang, you don't understand this, some knowledge is gained through long-term practice, science may not be able to explain it, but it is effective."

That's what food is all about. ”

Li Fan looked at Ren Hai and hoped that he would fight back, but Ren Hai was too nervous and his head was empty, so after he said "um, ah" twice, he looked at Li Fan.

Li Fan: "Teacher Zhenzhi just mentioned a word, 'effective', if food restraint is effective, then many people must be troubled by this.

However, in ancient times, there were not many specific cases of food restraint, and in modern times, there are few reports of hospitalization due to food restraint.

This shows that food is not 'effective'!"

Ren Hai smiled: "Teacher Li, with all due respect, don't mind, let's discuss."

Knowing that food is mutually reinforcing, who would defy the law? Naturally, everyone avoids eating it, right?"

The audience nodded, that's the truth.

Li Fan glanced at Wang Meng beside him, his forehead was sweating and his eyes were empty, Li Fan knew that he was unreliable.

I'm quite good at speaking in private, why did I stop eating when I was on a TV show?

Li Fan said: "Teacher Ren Hai's idea gave rise to two problems.

The first is the generation of rumors.

How do rumors come about? I'll give you an example.

Everyone must have eaten tomatoes, but a long time ago, tomatoes were only ornamental plants.

It originally grew in South America and is a plant in the Peruvian national forest, originally known as the 'wolf peach'.

There is a local legend that eating wolf peaches will cause lumps and tumors. So, although it is bright red and beautiful, no one dares to eat it.

In the 16th century, an English duke traveled to South America, brought tomatoes back to the country, and gave them to Queen Elizabeth as a lover's gift to express his love.

In the 17th century, a French painter depicted tomatoes many times, but finally he couldn't resist the beauty of tomatoes, so he risked his life to taste them.

As a result, the news that tomatoes were edible and delicious spread all over the world.

If you think about it, everyone knows that tomatoes are edible, but the rumor that tomatoes are inedible only needs the words of a few people or even one person to deceive them for a thousand years.

It can be seen that rumors are very easy to generate, and the cost is 'low', and the effect is long-lasting!

Am I right?"

The audience said:

"Yes!"

"Makes sense!"

"That's how a lot of low-level rumors come about, right?"

……

Li Fan continued: "Tomatoes can't be eaten, they can make people get lumps and tumors, this rumor was before the painter didn't eat tomatoes, it was also a folk practical experience, right?

Teacher Ren Hai said just now, knowing that food is mutually restrictive, who still defends the law. From this, I have come to the conclusion that the so-called folk experience of food restraint is only the experience of a few people!

There are very few cases of illness caused by food restraint. Individual cases are not enough to replace the whole, and the truth needs to be supported by certain data!

The data proves that the folk experience of food restraint can only be the folk experience of individual people.

Do you still have any questions about this?"

Zhenzhi frowned: "There are also some reports of food poisoning. ”

Li Fan said: "There is indeed this kind of news, but the hospital must be able to give the exact reason, the food is not clean, physical reasons, and eating too much...... I don't think there's a regular big hospital that says it's caused by food restraint, right?

Does Mr. Zhenzhi only read the title and not the content, or does he not believe in the content?"

True Knowledge: "......"

Li Fan: "What is the second question that arises from the previous thoughts of Mr. Ren Hai?

Teacher Ren Hai said that he knows that food is mutually restrictive, who would still try the law, right?

Next, let's reason backwards. I'll do a survey first, and on the spot, please raise your hand if you can cite more than 10 kinds of food!"

A few audience members raised their hands and said what they knew in turn, and one audience member stood up and reluctantly named eight sets of food.

Li Fan said: "Everyone has also seen that for most people, they only know how to restrain food, but there are very few who can name more than ten kinds of food and what are restrictive.

In the book "Food Restraint", there are more than 1,000 kinds of food combinations.

In other words, we are countless fools, and basically, many of us are constantly guilty of food restraint, but aren't we living well?

In other words, the huge data proves that we do not live according to the experience of food restraint in our lives, but we live well.

In fact, we have been trying to test the law! You can take a look at this 300-page book "The Complete Book of Food Restraint". ”

When Li Fan raised the book in his hand, the audience was hotly discussed:

"After listening to Li Fan's words, I suddenly became enlightened! Most of us only know about food restraint, but there are not many people who know about it, right?"

"We've been eating casually for so many years, and it's nothing!"

"Li Fan's criticism of the experience of things is quite reasonable!"

"Well, it is clearly unreasonable to use the experience of individual people to guide the lives of all people. ”

There is also a foreigner who said: "There is no food in our country!"

Zhenzhi was a little panicked, and he hurriedly said: "We need to talk about practical examples, crabs and persimmons are eaten together, and it does hurt my stomach." ”

Li Fan said: "First of all, it may hurt to eat a single one; secondly, if you don't eat too much; third, some people will hurt if you eat it, but some people won't; fourth, the food is not clean; fifth, the crab is not cooked...... I would say that there are many causes of diarrhea.

We can't just say that flowers are a human being just because someone is allergic to pollen, because flowers are innocent!"

In the laughter of the audience, Zhou Yun said: "Please press the selector again, and we will conduct the second round of support survey!"

Swish!

On the big screen, red and green lights appear intermittently, and the number is basically equal.

True Knowledge: I really want to talk about him.