Human cognitive limits make simplifying concepts and calculating devices constitutive of complex markets.

Evidence

Part of the significance of the performativity of economics arises from the fact that individual human beings tend to have quite limited powers of memory, information-processing, and calculation.” Those limitations explain the centrality especially in complex markets of simplifying concepts (e.g., “implied volatility”) and of material means of calculation (e.g., Black’s sheets and the Chicago Board Options Exchange’s Autoquote system). — Donald MacKenzie, An Engine, Not a Camera, 1195

Categorization

  • DEFINE: Establishes the distributed-cognition argument: models and devices are not auxiliary but load-bearing because humans have bounded rationality.
  • XREF: Connects to behavioral finance and Simon’s bounded rationality; also to Hutchins’s distributed cognition framework cited in the passage. — connects to: Economics simplifies and disembeds market participants to become applicable. — Donald MacKenzie & Yuval Millo, Constructing a Market, Performing Theory, 189; Economics operates through material devices and algorithms as much as beliefs. — Donald MacKenzie, An Engine, Not a Camera: How Financial…, 95; Economic models are deliberately simplified representations enabling mathematical reasoning. — Donald MacKenzie, An Engine, Not a Camera: How Financial…, 40 (+8 more)

Broader Connections