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Samuelson spotted a mistake in Bacheliers work. Bachelier's model had failed to consider that stock prices cannot fall below zero.
--
Part Three, Arbitrage, The Random Walk Cosa Nostra, p. 122

 

William Poundstone

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But now for the final exam: If you expect to be a net saver during the next five years, should you hope for a higher or lower stock market during that period? Many investors get this one wrong. Even though they are going to be net buyers of stocks for many years to come, they are elated when stock prices rise and depressed when they fall. In effect, they rejoice because prices have risen for the "hamburgers" they will soon be buying. This reaction makes no sense. Only those who will be sellers of equities in the near future should be happy at seeing stocks rise. Prospective purchasers should much prefer sinking prices.

 

Warren Buffett

 

Barack Obama has failed America. When he took office, the economy was in recession. He made it worse. And he made it last longer. Three years later, over 16 million Americans are out of work or have just quit looking. Millions more are underemployed. Three years later, unemployment is still above 8%, a figure he said his stimulus would keep from happening. Three years later, foreclosures are still at record levels. Three years later the prices of homes continue to fall. Three years later, our national debt has grown nearly as large as our entire economy. Families are buried under higher prices for food and higher prices for gasoline. It breaks my heart to see what's happening in this country. These failing hopes make up President Obama's own misery index. It's never been higher.

 

Mitt Romney

 

Barack Obama has failed America. When he took office, the economy was in recession. He made it worse. And he made it last longer. Three years later, over 16 million Americans are out of work or have just quit looking. Millions more are underemployed. Three years later, unemployment is still above 8%, a figure he said his stimulus would keep from happening. Three years later, foreclosures are still at record levels. Three years later the prices of homes continue to fall. Three years later, our national debt has grown nearly as large as our entire economy. Families are buried under higher prices for food and higher prices for gasoline. It breaks my heart to see what's happening in this country. These failing hopes make up President Obama's own misery index. It's never been higher.

 

Barack Obama

 

[The masses] ... must turn their hopes toward a miracle. In the depths of their despair reason cannot be believed, truth must be false, and lies must be truth. "Higher bread prices," "lower bread prices," "unchanged bread prices" have all failed. The only hope lies in a kind of bread price which is none of these, which nobody has ever seen before, and which belies the evidence of one's reason.

 

Peter F. Drucker

 

Treatment of the apparently whimsical fluctuations of the stock quotations as truly non stationary processes requires a model of such complexity that its practical value is likely to be limited. An additional complication, not encompassed by most stock market models, arises from the manifestation of the market as a nonzero sum game.

 

Richard Arnold Epstein