„Dioxin is the outcome of the operations of markets. Does this mean that having dioxin in the environment is efficient?“

—  Harvey S. Rosen, Chapter 5, Externalities, p. 79
Harvey S. Rosen21
American economist 1949

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„Even in financial markets, the concept of market efficiency does not hold.“

—  Paul Ormerod English economist
Part II, Chapter 8, The Dynamics of Unemployment, p. 176

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„[Market outcomes] depends on the cumulation of random events.“

—  W. Brian Arthur American economist 1946
p. 124; as cited in: Tobias Georg Meyer (2012) Path Dependence in Two-sided Markets. p. 244

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„Corruption is government intrusion into market efficiencies in the form of regulations.“

—  Milton Friedman American economist, statistician, and writer 1912 - 2006
Frequently misattributed to Milton Friedman based on a monologue from the 2005 movie Syriana

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