Although Lu Zhou used to communicate with some scholars who studied economics occasionally when he was at Princeton, he was not familiar with anyone.

I can't talk to him, he has to remember the name of the person?

What's more, Princeton is so big, he only stayed for a few years, and he may not have seen this man.

Carefully searched for the name in memory, Lu Zhou did not find a person who could match him. Until he landed on the academic inquiry website and entered the name, he found out who the man was.

The results are not searched, I don’t know, it’s not too small to find out.

Krugman!

Winner of the Nobel Prize in Economics in 2008!

International trade, exchange rate and macroeconomics experts!

The most brilliant achievement in academic resume was the successful prediction of the 1997 Asian financial crisis in 1994. This prophecy made its position in the field of economics soar after the outbreak of the Asian financial crisis, and it directly led to his later In 2008, he won the Nobel Prize.

But what makes Lu Zhou strange is why he contacted himself.

The general idea of ​​the email is to ask him when he has time and want to talk to him about the academic affairs.

Although not very interested in economics, after thinking for a while, Lu Zhou edited a reply and sent it.

[Today at 8:00 pm Beijing time, if you have time, we can talk. 】

After all, the same scholar who has won the Nobel Prize still has to give a little face.

Anyway, he is also on vacation, idle is also idle...

......

eight pm.

At the agreed time, Krugman appeared in the lens of the video call.

The professor who met for the first time even omitted the self-introduction, and almost just turned on the video call, and said in a tone that could not wait.

"You don't know how important your research is!"

When this sudden speech made some unclear, Lu Zhou sighed slightly: "...I don't really know, I don't even know which research result you are referring to... Can you tell me?"

Take a deep breath, Krugman explained.

“The bewley model has always been at the forefront of macroeconomics, and your improved model... I’ve called it a lu-bewley model for the time being, not only solves the problem of the huge computation and cumbersome steps of the bewley model, but the most important thing is to reduce it. The random error of the model!"

Bewley model?

It turned out to be the paper of Xiao Yan...

After listening to Professor Krugman's description, Lu Zhou's face finally showed a faint expression.

However, it is only a slap in the face, and there is no expression of interest that Professor Krugman expects.

Seeing Lu Zhou did not speak, Professor Krugman thought that he did not understand what it meant, so he cleared his throat and continued.

"Let's say, take all the complicated research into consideration. The ultimate goal of economics is only two. One is to optimize the efficiency of resource allocation, and the other is to coordinate the interests of society! If we can get a precise model, even if possible Accurate models, standing at the height of civilization, we can optimize the allocation of resources to the maximum! From a personal point of view, we can even predict the future through economic activities!"

The word "predicting the future" finally responded, and Lu Zhou leaned back in the chair.

"It sounds incredible."

Smiled and looked at Professor Krugman at the end of the video call, Lu Zhou continued, "I don't understand the principles of economics, but for chaotic systems... it seems that there is never a mathematical model that can do 100%. Forecast. Even if I just give an example, how do you predict the birth of controllable fusion technology and how to predict its impact on the global economy before it is born?"

"I can't answer this question, but what you said is not the point," Krugman shook his head and continued. "I can tell you that technological advancement can theoretically use R&D investment, gdp ratio, etc. The parameters are summarized in the model. It doesn't matter if you can't understand it. I can tell you clearly that this is a Nobel Prize-winning discovery! As long as you continue to study the mathematical improvement of the bewley model, I am sure that Nobel Economics The prize must belong to you!"

"But... I have already won the Fields Medal," Lu Zhou shrugged and continued, "The Nobel Prize has also been taken."

The atmosphere in the video has been lost for a while.

Professor Krugman coughed and persuaded him.

"You don't want to take one more? This is the Nobel Prize..."

"For me, the attraction of the Nobel Prize is not as big as it used to be," Lu Zhou sighed and said, "Do you know? I am still fascinating enough to be able to get any honor. Interested in the puzzle, can you understand this feeling? Dear Professor Krugman."

"..."

Krugman didn't want to pick up.

He even wanted to throw the pen on his hand on the screen.

A young man in his twenties and he said that he has not pursued the honor.

Ok, even if this guy does have such qualifications, it is really irritating!

Taking a deep breath, he tried to convince him.

“Isn't the bewley model enough to arouse your interest? It's also an important enough problem! And it's enough difficulty! I can tell you very responsibly that he is far more capable of directly changing the world than purely mathematical research.”

"That may not be," interrupted Professor Krugman's words. Lu Zhou smiled and continued, "And, improve the bewley model... or the lu-bewley model as you said, it only cost me altogether. It’s an hour’s time, no matter how you look at it, it’s not as hard as it looks.”

One hour……

Krugman was there.

Instinct tells him that this is absolutely impossible, but the person who looks at the opposite side of the video is not like joking or lying.

To put it bluntly, what good is it to lie to him?

However, in an hour, the bewley model has been improved to such an excellent degree...

This is really horrible!

"That's good here," said Professor Krugman, who couldn't say a word. Lu Zhou looked at his watch and yawned. "Although I am sorry, I can't help you too much. Princeton has Many excellent math professors, maybe you can take my model and ask them for help."

"So, goodbye."

The video call is over.

Looking at the black screen, Krugman was silent for a long time, sticking out a slightly trembling finger and taking off the glasses on the bridge of the nose.

He was always watching the conversation between the old man and Professor Lu, and his student Wiss swallowed and said.

"professor?"

Krugman sighed and shook his head and said.

"You can only find another way."

Princeton does have many excellent mathematics professors, but there are not many professors interested in economics, especially those who are engaged in theoretical research. Many people still have a lot of prejudice in the applied disciplines, and think that these things are studied. It is a waste of time.

Finally, there is a big cow in the mathematics world who has entered this field and made a little bit of results. He will let it go easily.

Just like the giant panda who slipped into the zoo, can you let go?

Krugman fell into meditation, and at this moment, he suddenly felt a move.

At this time he suddenly remembered that there seems to be another author in the paper.

Not in a fight for Foster.

This name he has never heard of, it is estimated that it is also a guy who has gone out of business.

But the name of the second work...

The eyes gradually brightened, and Krugman looked at his students and immediately said.

"Wiesell!"

Suddenly called the name, Wiss immediately responded.

"I am... what do you have to order?"

"Help me write a mail, the email address will be given to you for a while, just use my name, the recipient's name to fill in lu·xiaotong..." paused for a moment, Krugman said to himself "If the situation is going well, you should be able to catch up."

The voice of this sentence is not big, but it was just heard by Wiss, who was busy editing the mail.

I saw him stunned and asked subconsciously.

"What can I catch up with?"

"Filling, or choosing a mentor," paused, Krugman continued. "Remember the paper I have seen you? Even though the paper is only part of the mathematical model. But it is possible to sort out the theoretical part and make such an important study of a mathematician who is ignorant of economics. It is also a very difficult quality. If I didn’t guess wrong, she should not have it yet. Decided to go where to read the doctor!"

Wisl hesitated and made a hypothesis.

"But if she doesn't plan to continue on the academic road?"

Krugman categorically denied.

"impossible!"

"Being able to write such a brilliant paper, if she does not intend to go on the academic road, it is absolutely impossible! Just for graduation, there is no need to do this!"

"You can just send the mail to me according to my request."

"Yes..." Looking at the boss with a serious look, Wisl could only position the wood, and opened the computer to start editing the mail.

Buried in editing the mail, the 30-year-old doctor, can not help but feel a whole heart.

Every time during the graduation season, others are all kinds of recommendations for the magnetic recommendation, and they cut their heads to get the recommendation of the big cow. However, this lucky guy is good, don't say any recommendation letter, the Nobel Prize dad personally sent an email to invite her to read Bo...

This kind of treatment is no one else.

He even heard for the first time that there is such a good thing.

Thinking about it, I thought of my own experience of studying. Wistel’s heart was like a lemon. The sour taste of the spill was not soaked in the mail...

Fake!

What a special envy!