Chapter 942

When the land boat arrived at report hall 1, the report meeting had already begun.

Standing in front of the PPT showing the curtain, an old man with white hair pushed his glasses on the bridge of his nose and was speaking in a leisurely voice about something the boat could not understand at all.

However, although he didn't understand it at all, the scholars on the stage listened very carefully and were even infatuated with it.

This reminds Lu Zhou of his own report meeting. When he is holding the report meeting, the audience under the stage is basically the same look and state.

It's a master.

In my mind, the boat didn't stay at the door much, and soon found a seat in the last row.

In fact, Dr. Wiesel's statement is a bit exaggerated. Although there are a lot of people in the lecture hall, it's not enough to find one more place and have to sit in the corridor.

And a few people sitting on the ground under the platform are basically wearing thick glasses, and they look very young. This kind of people come to the conference with questions or purposes. Whether there is a seat in the lecture hall or not, they basically sit there.

After finding the position, Lu Zhou, who sat down, looked around with his neck outstretched, then turned out his mobile phone, while finding out the review of the paper he had worked with Xiao Tong, he divided part of his energy into two sentences of Professor Joseph's explanation.

Lu Bewley's model part of the theory, he basically forgot. Although this thing seems to be a little important to the economic world, it's just a gadget that he made at will, so it's not in his mind at all.

However, after reviewing the paper, he quickly picked up the core content of the paper, that is, the part of mathematical model.

For ordinary people, the biggest possibility is that they don't like each other and don't care about either side.

But for the land boats that often do this to save time, he is almost used to it.

I still remember when I was a professor in Princeton, he didn't just focus on two things, he could even focus on three things and ask questions when he listened.

Standing on the stage, speaking slowly, I saw Professor Joseph with a light spot from the back of the stage, and suddenly frowned.

In fact, the light emitted by the mobile screen is not obvious, and it can be said that if you don't stare at it specially, you won't notice it.

However, in the lecture hall where everyone is looking forward to him, a person has been burying his head and swiping a small action against the mobile phone screen. Even if he sits in the last row at any distance, his perspective is so prominent.

Although it's not a rare thing to play mobile phone in the report meeting, he always resents this kind of behavior, which makes him feel that his research results are not as attractive as mobile phone.

However, Joseph just frowned, and then ignored the person who made him unhappy.

If this is in his class, he will definitely invite the mobile phone player out, but this is the academic report meeting. He can't delay other scholars' time because of this little thing, let alone credit, which can be a threat

At this moment, I didn't notice that I was disgusted by some big economic bull because of this inconspicuous action.

However, if he knew the reason, he would certainly cry and laugh at the old man's eyesight.

What's more, he speaks with conscience. He is not playing with his mobile phone, but reviewing the previous article!

However, even if I let him know, I'm afraid the land boat will not be too concerned.

One is that he is not a scholar in the field of economics. The other is that there are not a thousand or eight hundred people who think about him at this level. There are no less than one or two

Read the paper from the beginning to the end, whether it is the part of the mathematical model or the theoretical part.

After reading it, Lu Zhou put away his mobile phone. He was intending to listen to Professor Joseph's evaluation of his mathematical model with great interest. Unexpectedly, he just focused on the stage. The old man's next words almost made him not spit blood.

"As we all know, a quite new mathematical model has been born in the field of economics recently. Its creator is Professor Lu Zhou, a famous fields award winner. Through the improvement on the basis of the classic Bewley model, a lot of tedious calculations have been saved, and the results of model calculations have been more accurate..."

"I don't deny that the mathematical model is beautiful, you guys, I don't deny that."

Looking around the lecture hall, Professor Joseph continued in a serious voice, "although I am a supporter of the new economic and trade theory and often use mathematics as an auxiliary tool to assist me in the quantitative research of economic theory, I have to emphasize again that mathematics is only an auxiliary tool in economics, just like us This is a "Macroeconomic forum" rather than an "accounting and financial forum."Friendly laughter broke out in the meeting room.

Many people still agree with the old man's joke.

It is true that the new economic scholars are more and more dependent on computers and mathematical tools. Even Nobel economics is becoming the "Nobel Prize for mathematics".

To the conservative scholars, this is simply stupid.

After a pause, Professor Joseph continued.

"The significance of economics is to study the laws of human economic activities, that is, the laws of value creation, transformation and realization, rather than digital games. We are economists, not financial accountants. "

"Although the theme of this report is Lu Bewley model, what I'm going to talk about next may disappoint many people," said Joseph, who took a deep look at Professor Krugman sitting in the front seat and stopped for a few seconds at the same Nobel Prize winning scholar who strongly praised Lu Bewley model. "I will focus on the report To reveal the shortcomings of Lu Bewley model. "

"In my opinion, these shortcomings are fatal!"

At the moment when the voice dropped, the whispers were heard in the lecture hall.

For Professor Joseph's criticism, Lu Zhou almost didn't spit blood at first, but after hearing what he said later, his expression returned to normal.

He is a mathematician himself. He is a complete layman in the field of economics. Even if there is a fatal defect, there is nothing wrong with him.

Besides, Professor Joseph criticizes only the economic value of his Lu Bewley model, and does not say that his mathematical theory is problematic.

I don't care about it at all.

Go as he says.

Just as he reclined the back of his head back to the chair, he heard two young people sitting next to him, like scholars studying for doctorates, whispering.

"Didn't Professor Krugman discuss the Lu Bewley model in his new paper? It seems that his attitude is the opposite of Professor Joseph's? "

"Do you still need to say that! The relationship between Professor Krugman and Professor Nash has always been good! He is a supporter of mathematical economics. His classic view is that a beautiful economic model must have a mathematical sense of beauty But he seems to be very good at mathematics. "

"The report will look interesting."

"Yes, yes, Professor Krugman is on the spot! Professor Joseph's words may be said to him In response to his earlier paper! "

"Unfortunately, compared with Professor Joseph, Professor Krugman's position is still a little lower! Even Samuelson, the author of economics, says he's not as good as he is! "

Listening to these people's whispers, the eyebrows of the boat gently picked up and down.

Professor Krugman is in the lecture hall, too?

Is this something Joseph specifically said to him?

Although I don't know much about the debate in economics, I always feel that things are becoming more and more interesting

Sitting in the lecture hall, Professor Krugman's expression was a little stiff.

Professor Joseph's words undoubtedly hit him in the face.

Finally, Xiaotong can't help asking in a low voice: "Professor, Lu-Bewley model Is there really a flaw? "

"It's hard to say," Professor Krugman shook his head. "I don't think it's flawless But Joseph, an old man, has a better understanding of the mathematical model of economics than I have. Maybe he has found something I haven't found

Professor Andes nodded, agreeing with his old friend Professor Krugman.

"I need to hear more. Maybe it's not that bad."

Professor Krugman had a dignified expression.

"Yes, I need to hear more."

Professor Joseph on the stage continued to talk, and at the same time, he used his marker to write the key parts of the explanation on the whiteboard from time to time.

"As we all know, the Bewley model has gradually become the mainstream method of macroeconomic research because it overcomes the inherent shortcomings of the random dynamic general equilibrium framework. Based on this, Lu Bewley model has been improved. For example, many mathematical tools such as the" endogenous grid method "have been used to solve every step of the optimization process instead of the Lagrange multiplier method, which is cumbersome Operation... "

"However, it also makes the Bewley model lose its original preciseness."

【f（x，y，z）=ag3，1+bg3，2+cg3，3…… Where x, y, Z ≥ 0 ]

【…… ]

as his explanation continued, the line by line formula was also printed on the whiteboard.

Stopped the marker in his hand, Professor Joseph looked back to the lecture hall and continued."If KPR utility function is introduced into equation 3 for testing, problems in the model can be found obviously."

"As I just said, Lu Bewley model has fatal defects in theory, at least it needs to be greatly modified."

"My story is over. If you have any questions, you can bring them up."

The meeting place was silent.

As if a pin could be heard on the ground.

When he said this, Professor Joseph took a look at Professor Krugman's direction, and saw that he looked at the blackboard with a blank face. He could not help but gently pull down the corner of his mouth.

Make a decision from above.

The guy didn't even keep up with his explanation.

Although he didn't plan to compare with this guy, he was quite dissatisfied with the guy's praise of Lu Bewley model.

I thought this guy could talk about something, but I didn't expect that he couldn't even ask a question.

Think of here, Joseph's face, emerged a hint of disappointment, as well as a few silk master's loneliness.

No one can fight!

Just as he was holding his papers on the desk, and was ready to wait a while, no one raised his hand, so that he would not waste time, an unexpected hand was raised from the back row.

"I have some questions to ask."

With the sound coming from the back of the lecture hall, the huge lecture hall was bustling for a moment