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Freakonomics¤Ç¡¢Posner¡Ê¤¿¤Ö¤óÀ¤³¦¤Ç¤â¤Ã¤È¤â±Æ¶Á¤ÎÂ礭¤¤ºÛȽ´±/·ÐºÑ³Ø¼Ô¡Ë¤¬¿·Ãø"A Failure of Capitalism"¤Ë¤Ä¤¤¤Æ²òÀ⤷¤Æ¤¤¤ë¡§
When banks start to hoard cash because their solvency is impaired, the money they receive from the Federal Reserve¡Çs purchasing activity does not spread into the rest of the economy. That is why a cascade of bank bankruptcies is far more serious than a cascade of, say, airline bankruptcies.

So the rational banker will take more risk than is optimal from an economy-wide standpoint. That is the logic of profit maximization, as explained long ago by Adam Smith: the businessman cares about his costs and his revenues, but not about the costs and revenues incurred or received elsewhere in the economy. He is not an altruist. The responsibility for preventing the collapse of the banking system is the government¡Çs, and it has been shirked, with extremely serious consequences.
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¡û¸µµ­»ö¡¡ »ñËܼçµÁ¤Î¼ºÇÔ¡Ê2ÃÊÍîÌÜ¡ËWhen banks start to hoard cash because their solvency is impaired, the money they receive from the Federal Reserve¡Çs purchasing activity does not spread into the rest of the economy. That is why a cascad...