Constructivist and Ecological Rationality in Economics

All those interested in extended mind/externalist/situated type thought should be aware of the field of Behavioral Economics (BE) in general and the work of Vernon Smith in particular. BE is a body of literature that was ploughing this trough some twenty years before the hypothesis of extended cognition took root in cognitive science. It is interesting to note that the Clark and Chalmers thesis took some inspiration from Herbert Simon (Clark & Chalmers, 1998). Simon writes:

Human beings, viewed as behaving systems, are quite simple. The apparent complexity of our behavior over time is largely a reflection of the complexity of the environment in which we find ourselves . . . [I] would like to view this information-packed memory less as part of the organism than as part of the environment to which it adapts . . . (Simon, 1996, 53, cf.8, 62, 99, 110).

But what is remarkable about this is that Simon in turn credits and endorses Hayek for this view:

No-one has characterized market mechanisms better than Friedrich von Hayek . . . [His] defense did not rest primarily upon the supposed optimum attained by them but rather upon the limits of the inner environment – the computational limits of human beings (Simon, 1996, 34).

What Simon has grasped is the corollary to Hayek’s spontaneous order externalism – “cognitive closure” (or in Simon’s terminology “bounded rationality” was a key presupposition to all Hayek’s work and set out in its most technical form in Hayek (1952/1976). Cognitive closure is the idea that the human mind is constitutionally delimited – a condition that can be ameliorated if the social and artifactual world functions as a kind of distributed extra-neural knowledge store.

Through the work of Vernon Smith (the provenance going back to his classical namesake, Adam), ecological or situated/bounded rationality has received its most recent and finest articulation. Unlike some Nobel Laureates (no names) Vernon is not a prima donna. He is exceedingly approachable, very kind, generous, modest and open-minded. I was lucky enough to meet  Vernon in Tucson and he put me at ease very quickly as did his charming wife. Recently, Vernon gave me an inscribed copy of his Rationality in Economics: Constructivist and Ecological Forms along with his autobiography Discovery – A Memoir, the former deeply informing my work; the latter interest taking wing from my talking to him about his Kansas youth.

Nobel Lecture

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