Chapter 943 No One Can Fight? (3/4)

Chapter 943 No one can fight? (34)

When Lu Zhou arrived at Lecture Hall No. 1, the report meeting had already started.

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

However, although he couldn't understand it at all, the scholars in the audience listened very carefully, even fascinated.

This reminded Lu Zhou of his own report meeting. Whenever he was giving a report meeting, the audience in the audience basically had the same eyes and this state.

Is a master ah.

Thinking so in his heart, Lu Zhou didn't stay at the door for too long, and quickly found a vacant seat in the last row and sat down.

In fact, what the doctor named Wissel said was a bit exaggerated. Although there were indeed a lot of people in the lecture hall, they were not so many that they couldn't find a seat and had to sit in the corridor.

And the few people sitting on the ground under the podium are basically wearing thick glasses, and they look very, very young. This kind of people come to the lecture with questions or purposes, no matter whether there are seats in the lecture hall or not, they basically sit there.

After finding the seat, Lu Zhou stretched his neck and looked around, then took out his mobile phone, and while finding the review of the thesis he and Xiaotong had collaborated on before, he devoted some energy to listening to a few words from Professor Joseph. explain.

He has basically forgotten the theory of the Lu-Bewley model part. Although this gadget seems to be a bit important to the economics profession, to him, it is just a gadget that he made at random, so he didn't take it to heart at all.

But now that he took out the paper and reviewed it again, he quickly picked up the core content of the paper—that is, the part of the mathematical model.

For ordinary people, this kind of dual-purpose approach is most likely that both ends are not pleasing, and neither side is cared about.

But for Lu Zhou who often does this to save time, he is almost getting used to it.

I still remember that when I was a professor at Princeton, he not only used two things at one time, but he could even use three things at once, asking questions while listening.

Standing on the stage and talking slowly, Professor Joseph, who saw a speck of light from the back row of the stage, suddenly frowned.

The light from the mobile phone screen is actually not obvious, and it can even be said that if you don't stare there, you may not notice it.

However, in the lecture hall where everyone is staring at him meticulously, expecting him to continue speaking, a person has been burying his head in front of the mobile phone screen and making small movements, no matter how far away, even if it is Sitting in the last row is also so conspicuous in his perspective.

While it's not uncommon to play with a cell phone during presentations, he has always resented it, and it makes him feel that his own research is less attractive than a cell phone.

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

If this was in his class, he would definitely ask the person playing with the mobile phone to go out, but this is an academic report meeting, he can't waste the time of other scholars because of such a trivial matter, and there is no such thing as credits as a threat ...

At this moment, Lu Zhou didn't notice that he was hated by a certain economics expert because of this inconspicuous action.

But if he knew the reason, he would definitely be dumbfounded by the old gentleman's eyesight.

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

However, even if he found out, Lu Zhou probably wouldn't take it too seriously.

One is that he is not a scholar in the field of economics, and the other is that at his current level, there are eight hundred people thinking about him, not one or two at all...

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

After reading it, Lu Zhou put away his mobile phone, and was interested to hear how this professor Joseph evaluated his mathematical model, but he did not expect that he just focused on the stage, the old man The husband's next sentence almost made him vomit blood.

"As we all know, a fairly novel mathematical model has recently been born in the field of economics. Its creator is the well-known Fields Medal winner Professor Lu Zhou. By improving the classic Bewley model, it saves a lot of tedious work. calculation, and make the model calculation results more accurate..."

"I don't deny that the math is beautiful, folks, I don't deny it."

Looking around the scene of the lecture hall, Professor Joseph continued in a serious tone, "Although I am a supporter of the new economic and trade theory, I often use mathematics as an auxiliary tool to assist my quantitative research on economic theory, But I have to stress again that in economics mathematics is just an auxiliary tool, as if we are a 'macroeconomic forum' rather than an 'accounting and finance forum'."

There were friendly laughter in the venue.

Many people still agree with the joke made by the old man.

Indeed, modern new economists rely more and more on computers and mathematical tools, and even Nobel economics is more and more likely to become the "Nobel Prize in Mathematics".

Among conservative academics, this is downright silly.

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 numbers games. We are economists, not financial accountants."

"Although the theme of this report is the Lu-Bewley model, what I'm going to say next may disappoint many people," said Professor Krugman, who was sitting in the front seat. Pausing for a few seconds on this Nobel laureate who strongly advocates the Lu-Bewley model, Joseph continued, "I will focus the report on revealing the shortcomings of the Lu-Bewley model."

"In my opinion, these shortcomings are fatal!"

The moment the voice fell, whispers were heard in the lecture hall.

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

He is a mathematician himself, and he is a complete layman in the field of economics. Even if there are fatal flaws, it is understandable.

What's more, Professor Joseph only criticized the economic value of his Lu-Bewley model, and did not say that his mathematical theory was problematic.

Lu Zhou didn't care about it at all.

Let him go.

Just when he leaned his head back on the chair again, he heard two young-looking scholars sitting next to him, who looked like they were studying for a Ph.D., whispering to each other.

"Didn't Professor Krugman discuss the Lu-Bewley model in his new paper? His attitude seems to be the exact opposite of Professor Joseph's?"

"It goes without saying! Professor Krugman and Professor Nash have always had a good relationship! He is a supporter of mathematical economics theory. His most classic view is that a beautiful economic model must have a mathematical sense of beauty ...but he himself seems to be average in mathematics."

"This report seems to be a bit interesting."

"Yes, yes, Professor Krugman is right there! Professor Joseph's words may be for him... a response to his paper some time ago!"

"Unfortunately, compared with Professor Joseph, Professor Krugman's status is still a bit lower! Even Samuelson, the author of "Economics", expressed that he is ashamed!"

Listening to the whispers of these people, Lu Zhou raised his eyebrows slightly.

Professor Krugman is also in the lecture hall?

Joseph said these words specifically to him?

Although I don't know much about the debates in the economics field, I always feel that things are gradually becoming more interesting...

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

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

Somewhat unrestrained, Xiaotong finally couldn't help asking in a low voice: "Professor, is there really a defect in the Lu-Bewley model?"

"It's hard to say," Professor Krugman shook his head, "I don't think there are any flaws...but Joseph, an old guy, has a better mathematical model of economics than me. There may be problems that have not been found.”

Professor Andis also nodded, agreeing with his old friend Professor Krugman.

"Have to listen again, maybe it's not that bad."

Professor Krugman had a solemn expression.

"Yeah, I have to listen again."

Professor Joseph on the stage continued to speak, and at the same time used the marker pen in his hand 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 stochastic dynamic general equilibrium framework. The Lu-Bewley model has been improved on this basis, such as using the 'endogenous grid method', etc. Many mathematical tools replace the Lagrange multiplier method to solve these tedious operations for each step in the optimization process..."

"However, it also took away the rigor of the Bewley model."

【f(x, y, z)=ag3, 1+bg3, 2+cg3, 3... where x, y, z≥0...】

【…】

As his explanation continued, line by line calculations were also printed on the whiteboard.

Stopping the marker pen in his hand, Professor Joseph looked back at the lecture hall and continued.

"If you test the KPR utility function introduced into formula 3, you can clearly find the problems in the model."

"Also as I said just now, the Lu-Bewley model has fatal flaws in theory, at least it needs to be substantially revised."

"My narration is over, if you have any doubts, you can raise them."

The venue was silent.

It was as if a needle could be heard falling on the ground.

When he said this, Professor Joseph glanced in Professor Krugman's direction, and seeing him staring at the blackboard in a daze, he couldn't help but twitched the corner of his mouth slightly.

Compete with each other.

The guy wasn't even keeping up with his presentation.

Although he didn't intend to compare anything with this guy, he was just quite dissatisfied with this guy's argument for advocating the Lu-Bewley model.

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

Thinking of this, a trace of disappointment appeared on Joseph's face, as well as a few traces of the loneliness of a master.

There is no one who can fight!

Just as he was stacking the papers on the desk, and was about to wait a while for no one to raise his hand, so as not to waste time, a hand that he didn't expect was raised from the back row.

"I have a question to ask."

As the voice came from the back row of the lecture hall, the huge lecture hall instantly became lively...