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Science 2 April 1999:
Vol. 284. no. 5411, pp. 107 - 109
DOI: 10.1126/science.284.5411.107
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Viewpoint

Complexity and the Economy

W. Brian Arthur

After two centuries of studying equilibria--static patterns that call for no further behavioral adjustments--economists are beginning to study the general emergence of structures and the unfolding of patterns in the economy. When viewed in out-of-equilibrium formation, economic patterns sometimes simplify into the simple static equilibria of standard economics. More often they are ever changing, showing perpetually novel behavior and emergent phenomena. Complexity portrays the economy not as deterministic, predictable, and mechanistic, but as process dependent, organic, and always evolving.

Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501, USA.

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