Ludwig von Mises
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Born
Mises argued in 1920 that socialism cannot work because, without private ownership of the means of production, there are no market prices and so no way to calculate which use of resources is economical. Human Action (1949) built a whole economics on deduction from purposeful action rather than statistics. His defence of the market was utilitarian, not based on natural rights, a point later rights-based libertarians found too weak.
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