濟學學大師 Paul Samulson (1915~2009) 20世紀最傑出的學院派經濟學家，羅伯特·薩繆爾森Robert Samuelson逝世，享年79歲知名專欄作家，用簡單易懂的語言解釋複雜的經濟政策。2026年AI Overview 其論述他留下了許多關於經濟學、投資和預測局限性的重要警示和格言。他的「警示」通常強調經濟的複雜性、人類行為的反覆無常，以及市場波動並非總是由穩健的基本面驅動。。 2008年出版的《大通貨膨脹及其後果 “The Great Inflation and Its Aftermath” 》「適時的學術著作，對我們目前正在進行的關於民主資本主義的本質和未來的辯論大有裨益」。

 

Mr. Samuelson discussed the implications of outsourcing in his office at the Massachusetts Institute of Technology in 2004.Credit...Robert Spencer for The New York Times

2004年，薩繆爾森先生在麻省理工學院的辦公室裡探討了外包的影響。

Paul A. Samuelson, the first American Nobel laureate in economics and the foremost academic economist of the 20th century,保羅·A·薩繆爾森，第一位獲得諾貝爾經濟學獎的美國人，也是20世紀最傑出的學院派經濟學家。

The textbook introduced generations of students to the revolutionary ideas of John Maynard Keynes, the British economist who in the 1930s developed the theory that modern market economies could become trapped in depression and would then need a strong push from government spending or tax cuts, in addition to lenient monetary policy, to restore them. Many economics students would never again rest comfortably with the 19th-century view that private markets would cure unemployment without need of government intervention.

這本教科書讓一代又一代的學生接觸到了約翰·梅納德·凱恩斯的革命性思想。這位英國經濟學家在1930年代提出了現代市場經濟可能陷入蕭條的理論，認為除了寬鬆的貨幣政策外，還需要政府大力支出或減稅才能使其復甦。許多經濟學專業的學生從此不再認同19世紀那種認為私人市場無需政府干預就能解決失業問題的觀點。

名經濟學家 Robert M. Solow (1924~2023)：量化找單一重要因素。辦公室隔壁為大師 Paul Samulson (1915~2009)談天近四十年；英才老師與學生；要當"哲王"可不容易。…

https://www.facebook.com/hanching.chung/videos/308424745515381

Robert Samuelson, Award-Winning Economics Columnist, Dies at 79

He was a familiar byline in Newsweek and The Washington Post for decades, explaining the intricacies of economic policy in reader-friendly vernacular.

屢獲殊榮的經濟專欄作家羅伯特·薩繆爾森逝世，享年79歲

幾十年來，他一直是《新聞周刊》和《華盛頓郵報》的知名專欄作家，用簡單易懂的語言解釋複雜的經濟政策。

Steve Forbes called Mr. Samuelson’s 2008 book, “The Great Inflation and Its Aftermath,” “a timely piece of scholarship that will serve us well in the debates now unfolding on the nature and future of democratic capitalism.”Credit...Random House一本只有文字的書封，上面寫著「大通貨膨脹及其後果」。

史蒂夫·福布斯稱薩繆爾森先生2008年出版的《大通貨膨脹及其後果》一書是「一部適時的學術著作，對我們目前正在進行的關於民主資本主義的本質和未來的辯論大有裨益」。圖片來源：蘭登書屋

University of Hawaii System

https://www2.hawaii.edu › ~noy › samuelson

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by PA Samuelson · Cited by 1327 — Most noneconomists are fearful when an emerging China or India, helped by their still low real wage rates, outsourcing and miracle.Read more

20 pages

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AI Overview

Paul Samuelson (1915–2009), the first American to win the Nobel Prize in Economic Sciences, left several influential warnings and dictums regarding economics, investing, and the limitations of forecasting. His "warnings" generally emphasize that the economy is complex, human behavior is often erratic, and market movements are not always driven by sound fundamentals. 

Here are the key Samuelson warnings and principles explained:

1. The "Recession Prediction" Warning

• The Quote: "The stock market has predicted nine out of the last five recessions."
• The Meaning: This is a famous critique of market forecasting. Samuelson was pointing out that the stock market is far more volatile than the actual economy. It frequently dives (predicting a recession) without one occurring, leading to false positives.
• Context: It is a warning to policymakers and investors not to panic over market drops, as they are not reliable, precise indicators of economic failure. 

2. "Samuelson’s Dictum" (Macro-Inefficiency vs. Micro-Efficiency) 

• The Concept: Samuelson proposed that while individual firm stock prices reflect available information (micro-efficiency), the overall aggregate market does not convincingly reflect fundamentals (macro-inefficiency).
• The Meaning: Individual stocks might be priced "right" based on company news, but the stock market as a whole often acts irrational—driven by herd behavior, emotion, or speculative bubbles. He warned that the market can be inefficient at estimating future dividends or earnings in the aggregate. 

3. Investment as "Watching Grass Grow" 

• The Warning: "Investing should be more like watching paint dry or watching grass grow. If you want excitement, take $800 and go to Las Vegas."
• The Meaning: True investing is slow, methodical, and boring. He warned that trying to "beat the market" with frequent trading is gambling, not investing.
• Advice: He advocated for passive management, broad diversification, and minimizing costs to build wealth. 

4. The Fallacy of Large Numbers

• The Warning: Accepting a single bet with a positive expected return is smart, but accepting a long sequence of them is not necessarily rational, depending on your risk aversion.
• The Meaning: This challenged the idea that if you have a slight edge, you should play as many times as possible. Samuelson argued that for most people, the risk of a catastrophic loss (even if low probability) accumulates over time, making it irrational to accept high-stakes bets just because the "average" outcome is positive. 

5. Warning Against "Over-Savings" in Depressions

• The Concept: Based on his Keynesian view, he cautioned that when an economy is in a depression, saving money is harmful.
• The Meaning: If everyone "tightens their belt" and saves, consumer demand vanishes, causing a "vicious deflationary spiral". 

Summary

Samuelson's overall, recurring warning was one of "empirical humility". He believed in the power of markets, but felt that professional economics and investors often act with too much arrogance regarding their ability to predict the future or to outperform the market systematically. 

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現實的反諷：薩繆森對毛澤東評價的歷史轉向

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在李弘祺教授的演講《資本主義與現代價值興起》中，他提到曾以反諷的口吻稱毛澤東為「偉大的經濟學家」，技巧性地化解了與當時左派學者的爭論。這記反諷實則點出了二戰後主流經濟學界在面對極權體制時，常陷入「模型優於人性」的智識盲點。

​這份盲點，在 1970 年諾貝爾經濟學獎得主保羅·薩繆森（Paul Samuelson）身上體現得最為深刻。薩繆森不僅是新凱恩斯主義的領軍人物，其弟羅伯特·薩默斯（Robert Summers）與弟媳皆為知名學者，弟媳的哥哥肯尼斯·艾羅（Kenneth Arrow）是 1972 年諾貝爾獎得主，其侄勞倫斯·薩默斯（Lawrence Summers）則曾任美國財政部長與哈佛大學校長。

然而，即便是這位精通數學模型、出身學術豪門的一代宗師，在預測中國與共產經濟體的命運時，也經歷了戲劇性的歷史轉折。

​早期：計畫經濟的科學迷信（1960-70 年代）

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20 世紀中葉，蘇聯與毛澤東治下的中國展現出強大的國家動員力。薩繆森在 1961 年版的經典教科書《經濟學》（Economics）中，繪製了一張著名的預測圖表，斷言蘇聯式的「中央計畫體制」將在 1984 年至 1997 年間，於 GNP（國民生產總值）規模上超越美國。

​當時他認為，雖然計畫經濟犧牲了政治自由，但在推動高儲蓄、高投資與資本密集型成長方面，可能比「混亂」的市場經濟更具效率。他沈迷於數據展現的工業轉型表象，卻忽略了「大躍進」與激進農村政策背後的資源嚴重錯配，以及隨之而來的人道災難。

​中期：延後的期限與不願承認的頹勢（1980 年代）

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步入 1980 年代，文革後的中國與蘇聯經濟陷入長期停滯，西方經濟體並未如預期般衰落。薩繆森在 1980 年的版本中雖仍保留「超越論」圖表，卻將交叉點大幅延後至 2002 年甚至 2012 年。此時的他，仍試圖從天氣或人口變數中尋找解釋，維持「計畫力量」可能在成長率上勝出的理論假設，尚未完全從科學主義的傲慢中覺醒。

​晚年：市場的回歸與「薩繆森警示」（1990 年代至 2009 年）

隨著蘇聯解體與中國「改革開放」的成功，薩繆森最終承認：中國的崛起並非源於毛式的計畫體制，而是因為擁抱了市場誘因、出口導向與吸引外資。他在晚年版本中移除了那張曾被奉為圭臬的圖表，轉向對「市場競爭」的深刻敬畏。