Chapter 942: No one can play? (Three / four)

When Lu Zhou arrived in Lecture Hall 1, the report had already begun.
Standing in front of the PPT showing the curtain, an old man with white hair pushed the glasses on the bridge of his nose, speaking in a slow and unhurried voice something that Lu Zhou could not understand.
However, although he did not understand at all, the scholars in the audience listened very seriously, even fascinated.
This actually reminded Lu Zhou of his own briefing session. Whenever he was having a briefing session, the audience in the audience basically had the same look and state.
Is a master.
With this in mind, Lu Zhou didn't stay much at the door, and soon found an empty seat in the last row and sat down.
In fact, the statement of the doctor named Weissl is a bit exaggerated. Although there are indeed many people in the lecture hall, there is no more than one place that cannot be found and must be seated in the corridor.
The few people sitting on the podium are basically wearing thick glasses and look very, very young. These people came to the report with questions or purposes, and whether or not there were seats in the lecture hall, they basically sat there.
After finding the position, Lu Zhou who sat down stretched his neck and glanced, then flipped out of the mobile phone, while looking for the review of the paper that he and Xiaotong had cooperated with, he devoted some energy to listening to two sentences of Professor Joseph explain.
Lu-Bewley's part of the theory, he has basically forgotten. Although this gadget seems to be a bit important to the economics community, for himself, it is just a gadget made by hand, so it is not at all in his mind.
However, now that he has taken 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 the average person, this kind of dual-use method is probably the most unsatisfactory at both ends, not bothering.
But for Lu Zhou, who often does this to save time, he is almost used to it.
I still remember the time when I was a professor at Princeton, he not only used it with one mind, he even used it with one mind, and asked questions when he heard it.
Standing on the stage speaking slowly, he saw Professor Joseph from the back row of the podium, and suddenly frowned.
The light emitted from the screen of the mobile phone 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 was staring at him meticulously and looking forward to his next talk, a person kept burying his head and swiping at the screen of the mobile phone, even if it was far away, even if it was Sitting in the last row, it was so prominent in his perspective.
Although it is not uncommon to play with a mobile phone at a report, he has always resented this behavior, which will make him feel that his research results are not as attractive as mobile phones.
However, Joseph only frowned, and then ignored the person who made him unhappy.
If this is in his class, he will definitely invite the person playing with the mobile phone to go out, but here is the academic report, he can not delay the time of other scholars because of this little thing, let alone credits can be a threat ...
At this moment, Lu Zhou did not notice that he was hated by an economic bull because of this inconspicuous action.
But if he knew the reason, he would surely laugh at the old gentleman's eyesight.
What's more, he talked with his conscience. He wasn't playing with a mobile phone, but looking back at the previous article!
However, even if he let him know, Lu Zhou may not be too concerned.
On the one hand, he was not a scholar in the field of economics. On the other hand, he came to his present level, remembering that there were not a thousand or eighty of his people. It was not worse than one or two ...
Read the thesis from beginning to end, whether it's a mathematical model or a theoretical part.
After reading, Lu Zhou put away the phone, and was interested to hear how Professor Joseph evaluated his mathematical model. As a result, he did not expect that he had just focused on the stage. The old man The next sentence of his husband was that he almost did not vomit blood.
"We all know that a fairly new mathematical model has recently been born in the field of economics. Its creator is the well-known Fields Prize winner Professor Lu Zhou, who has improved on the basis of the classic Bewley model, saving a lot of complexity. And make the results of the model calculation more accurate ... "
"I don't deny that this mathematical model is beautiful, everyone, I don't deny it."
Looking around the scene of the lecture hall, Professor Joseph continued in a serious tone, "Although I am a proponent 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 emphasize again that mathematics is just an auxiliary tool in economics, as if we are a 'macroeconomic forum' and not an 'accounting and finance forum'. "
Friendly laughter rang out at the venue.
Many people still agree with this joke made by the old gentleman.
Indeed, the new economists now rely more and more on computers and mathematical tools, and even Nobel Economics is becoming more and more a "Nobel Prize in mathematics".
To conservative scholars, this is simply stupid.
After a pause, Professor Joseph continued.
"The significance of economics is to study the laws of human economic activity, that is, the laws of value creation, transformation, and realization, not digital games. We are economists and financial accountants."
"Although this lecture will be based on the Lu-Bewley model, what I will say next may disappoint many people," took a deep look at Professor Krugman in the front seat, looking away After staying for a few seconds on the same scholar who highly praised the Lu-Bewley model, Nobel Prize winner, Joseph continued, "I will focus on the report's weaknesses in the Lu-Bewley model."
"In my opinion, these shortcomings are fatal!"
The moment the words fell, a whispered voice was heard in the lecture hall.
Regarding Professor Joseph's criticism, although Lu Zhou almost did not spit blood at first, after hearing what he said later, his expression returned to normal.
He is a mathematician himself and is a complete layman in the field of economics. Even if there are really fatal flaws, that is nothing wrong.
Moreover, what Professor Joseph criticized was only the economic value of his Lu-Bewley model, and did not say that his mathematical theory was problematic.
Lu Zhou didn't care about this.
Let him go.
Just as he leaned his back of his head back on the chair, he heard the two sitting next to him looking very young, like doctoral scholars, whispering and whispering.
"Didn't Professor Krugman discuss the Lu-Bewley model in his new paper? It seems that his attitude is exactly the opposite of Professor Joseph?"
"Do you still need to say that! The relationship between Professor Krugman and Professor Nash has been good! It is a supporter of mathematical economics theory. His most classic point is that a beautiful economic model must have a mathematical sense of beauty ... but he seems to have a very average mathematical ability. "
"This report will look interesting."
"Yeah, yeah, Professor Krugman is on the scene! Professor Joseph's words may have been told to him ... in response to his paper some time ago!"
"Unfortunately, compared to Professor Joseph, Professor Krugman's position is still a little lower! Even Samuelson, the author of Economics, expressed his shame!"
Listening to the whispers of these people, Lu Zhou's eyebrows were raised slightly.
Is Professor Krugman also in the lecture hall?
These words were specifically told by Joseph?
Although I don't understand the arguments in economics, I always feel that things are becoming more interesting ...
Sitting in the lecture hall, Professor Krugman's expression was stiff.
Those words of Professor Joseph undoubtedly hit his face.
Somewhat upset, Xiaotong finally couldn't help but asked in a low voice: "Professor, is the Lu-Bewley model ... really flawed?"
"It's hard to say," Professor Krugman shook his head. "I don't think it's flawed ... but Joseph, the old man, has a more sophisticated mathematical model of economics than me. It is possible that no problems were found. "
Professor Andy nodded, believing that he agreed with his old friend Professor Krugman.
"You have to listen again, maybe it's not that bad."
Professor Krugman looked dignified.
"Yeah, I have to listen again."
Professor Joseph on the stage continued to talk, and at the same time, the highlights of the explanation were written from time to time on the whiteboard with the marker in his hand.
"It is well known that 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 have replaced the Lagrangian multiplier method to solve these tedious operations at each step in the optimization process ... "
"However, this also makes Bewley's model lose his original rigor ~ EbookFREE.me ~ where x, y, z ≥ 0 ...]
[……]
As his explanation continued, lines of calculations were printed on the whiteboard.
Stopping the marker in his hand, Professor Joseph looked back at the lecture hall and continued.
"If the KPR utility function is introduced into Equation 3 and tested, the problems in the model can be clearly found."
"And as I said just now, the Lu-Bewley model has a fatal flaw in theory, and at least it needs to be modified significantly."
"My narrative is over, if in doubt, I can raise it."
The venue was silent and quiet.
It's as though a needle can be heard on the ground.
As he said this, Professor Joseph glanced at Professor Krugman's direction and saw that he looked at the blackboard with an aggressive look, and he couldn't help but twitch the corner of his mouth.
Decided.
This guy didn't even keep up with his speed of explanation.
Although he did not intend to compare with this guy, he was quite dissatisfied with the argument that this guy admired the Lu-Bewley model.
Originally thought that this guy could tell something, I didn't expect to be able to ask even a question.
Thinking of this, a slight disappointment appeared in Joseph's face, and a few loneliness of masters.
No one can fight!
Just when he was holding his dissertation on the lecture table, and was about to wait for a while when no one raised his hand, and no time was wasted, an unexpected hand was raised from the back row.
"I have some questions to ask."
With the sound coming from the back row of the lecture hall, the huge lecture hall became lively ...