Every action that people would logically take in their rational self-interest to protect themselves from deflation would just make the deflation worse.

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Economists, psychologists and historians of science all tell us (and I am inclined to believe them) that we act within our rational self-interest.

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Rand offered us a way out -- to fight for a morality of rational self-interest, and for capitalism, the system which is its expression.

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Studies by psychologists show systematic biases in how people take decisions they often act in ways that are contrary to traditional economic models of rational self-interest.

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They donned earplugs and acted in their own rational self-interest.

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What happens when a nation of independent citizens pursuing their rational self-interest honestly exchanging the fruits of their labor and growing the economy as each trade creates value gives way to an array of warring interest groups, each seeking to leverage the government to live at the expense of others, even as the economy withers?

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Behavioral economics calls into question the central assumption of classical economics: that individuals are rational actors who seek to maximize their self-interest.

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Two centuries before Rand arrived on the scene, Adam Smith had already written The Wealth of Nations, a powerful treatise demonstrating why self-interest offers a more secure foundation for a rational society than a selfless dedication to the common good.

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Rand also noted that only an ethic of rational selfishness can justify the pursuit of profit that is the basis of capitalism -- and that so long as self-interest is tainted by moral suspicion, the profit motive will continue to take the rap for every imaginable (or imagined) social ill and economic disaster.

WSJ: Is Rand Relevant?