The next day, in Lecture Hall One.
Carrying a twelve-page paper, Professor Krugman walked up to the podium in a formal suit.
Although Xiao Tong was originally supposed to do this, she had declined on the grounds that she had no experience presenting at major conferences and would be unable to convey her brother's research findings fully to the economics community.
In truth, it did not matter who went up to present the work.
She had already made her decision.
Professor Krugman glanced around at the gradually quieting audience, cleared his throat, and began in a steady voice.
"I believe many of you have already heard about yesterday's presentation. Some of you may even have been there yourselves."
"Professor Joseph has already given a very thorough account of the Lu-Bewley Model. Although there were some omissions and misunderstandings, he addressed those omissions at the end of the presentation."
"As for the Lu-Bewley Model, I have nothing further to add. In fact, I shouldn't be the one standing here today. It should be Professor Lu, who actually completed this work."
At his final sentence, murmurs rose from the audience.
"What does Professor Krugman mean?"
"Has Professor Lu done something else?"
"If I remember correctly, this presentation was supposed to discuss applications of the Lu-Bewley Model in macroeconomics."
"It looks like Professor Krugman made a last-minute change and abandoned the paper he originally planned to present... Is he going to present some new findings on Professor Lu's behalf?"
As the lecture hall grew restless again, Professor Krugman cleared his throat loudly, signaling for the audience to stop talking.
Once the hall fell silent again, he continued in a clear voice.
"Just yesterday afternoon, Professor Lu revised his research and left us with a model even better than the Lu-Bewley Model."
"Some of