“Decisions and plans made by others… [can be judged to be] quantitatively at least as important as the primary uncertainty arising from random acts of nature and unpredictable changes in consumers' preferences.”

—  Tjalling Koopmans

Source: Three Essays (1957), p. 163; as cited in: Richard Langlois (1989) Economics as a Process. p. 181

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Tjalling Koopmans photo
Tjalling Koopmans 16
Dutch American economist 1910–1985

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