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。
20 pages
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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