純正流暢的英文落在安靜的閱讀區，周圍那些藏在翻書聲後的議論頓時消失。
魏國棟轉頭看向林尋。
蘇清寒也抬起臉，桌下的鞋尖停在他的椅腳旁。
林尋的手指沿著書頁往下移動，語速不快，卻沒有半點遲疑。
“The first step is to separate short-term liquidity shocks from long-term prig expectations.”
“Your state variable tains both effects, so the feedback coeffit is repeatedly amplified.”
他騰出一隻手，把草稿紙往自己這邊轉了少許，仍舊沒有抬頭，只用筆帽點在第二組公式的末端。
“Remove this endogenous expectation term ae it as a ditional variable.”
“Then substitute the regional debt straint into the transitioion.”
“Finally, set a piecewise boundary for capital outflow instead of using a single tinuous threshold.”
三步。
拆分衝擊項。
代入債務約束。
重設資本流出邊界。
魏國棟原本還站得筆首，聽到第二步時，身體己經向桌面俯去，手指順著林尋指出的公式快速驗算。
林尋卻沒有停。
他把筆帽移到草稿紙最上方，語氣仍舊隨意。
“Besides, the question itself has three assumption flaws.”
“The first is that institutional iors aail iors are treated as having the same response speed.”
“The sed is that cross-border transa costs remain stant during a liquidity crisis.”
“The third is more fual.”
林尋終於把英文金融著作合上一點，抬手指向最後那組隨機擾動項。
“You assume that politervention is exogenous.”
“But in a regional debt crisis, politervention is affected by the same market expectations you put into this equation.”
“So this is not aernal variable.”
“It is part of the feedback loop.”
最後一句落下，整張桌子附近安靜得只剩空調送風聲。
魏國棟盯著草稿紙，右手拿起蘇清寒放在桌邊的筆，沿著林尋給出的路線重新寫下兩組公式。
。利順導推組一第
。立界邊組二第
。解晰清了現出的真然竟，型模的斂收法無終始本原，環饋反進放新重項預干策政把他等
。話說有沒棟國魏
。圍範件條的新上補邊旁在著接，數變舊箇一掉劃時間中到寫，查檢始開行一第從又，來過轉紙張整把他
。話說敢不也生學圍周
。應反有沒都他，他膊胳拿伴同邊旁，實實嚴嚴得閉把經己生男的懂不聽尋林定認才剛
。上臉尋林到移紙稿草從目，面對在坐寒清蘇
。害厲案答的尋林出聽只人別
。譜離多有這道知卻
。整調慢慢獻文合結再，時小個幾上跑用得也，生士博系融金給拿怕哪，統系態機隨和學濟經量計階高及涉型模套這棟國魏
。眼一了掃只尋林
。下放全完沒都書連至甚
。題問的備儲識知是不經己這
。建重掉拆手隨再，輯邏層底到穿看路一式公層表從型模把是這
。擊打維降
。擊打維降的正真
。再有沒上紙在落尖筆，完寫導推行一後最把棟國魏
。激的飾掩以難剩只，失消己早校考的上臉，頭起抬後隨，鐘分半足足了默沉他
”。人輕年“
。道問地頓一字一，尋林著盯他
”？字名麼什你“
