Abstract
The traditional methodological individualism (MI) of mainstream economics has frozen its opposition to methodological holism within a process of axiomatization completed in the early 1970s at two levels: (1) individual rationality (reduced to optimization); and (2) inter-individual coordination (restricted to market equilibria). This “closed” MI thus defined its own validity limits: (1) a complete list of future states of nature; and (2) a complete system of options markets. The violation of these conditions in the real world makes visible a double phenomenon of incompleteness. Mainstream economics has since developed three strategies of blindness, partial or total, at the cost of multiple inconsistencies. The positive treatment of this double incompleteness sketched in some heterodox schools will give rise to a new, “open,” MI.
A previous version of this article was originally published in French in L’Année sociologique 70 (1) 2020, 231–259: “cindividualisme méthodologique à la recherche de sa propre incomplétude.”
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Notes
- 1.
See Malinvaud (1991) (Chapter 6, and in particular pp.195–200).
- 2.
In this context, the economist comes up against the negative theorems propounded by Sonnenschein, Mantel, and Debreu between 1972 and 1974. They amount to showing (let us put it metaphorically) a certain reciprocal independence between the properties of individual behavior and those of their sum on the market.
- 3.
Except for the fact that the computation of equilibrium prices is left to the institutional mechanism of the market (the auctioneer, as Walras would say), whose origin nobody knows. See also note 1.
- 4.
Ian Hacking traces this tradition back to Pascal, with the invention of numerical probabilities, and to his “wager” presented as the first problem in decision theory (Hacking, 1975).
- 5.
Validity of its formal tools, which does not exhaust its conditions of empirical validity. The reader who would like a deep reflection on the axiomatic method, in relation with the economic discipline, should consult Philippe Mongin (2003).
- 6.
For a pedagogical synthesis, see John C. Harsanyi (1977).
- 7.
As David Kreps (1990) puts it.
- 8.
One can even speak of reinforcement (Orléan [ed.], 2015; and see note 10).
- 9.
Of which we have given a “sociological” characterization in the introduction.
- 10.
For this reason, if the General Equilibrium Theory constitutes the “Standard Theory,” we can call this new central figure of mainstream economics the “Extended Standard Theory,” using a classic terminology from the philosophy of science. Arrow (1985, p. 38) was perfectly aware of this.
- 11.
- 12.
From an overabundant literature, let us extract the small work of the political scientist Wendy Brown (2007) and the sums of Pierre Dardot and Christian Laval (2009), without forgetting the prophetic seminars of Michel Foucault at the Collège de France in 1978–1979. See also the interesting list of components drawn up by Wendy Brown (2007, p. 58).
- 13.
- 14.
The interested reader can refer to the collective work directed by David Colander, which offers both a pedagogical synthesis and an enlightened critique (Colander [dir.], 2006).
- 15.
- 16.
All references can be found in Gilles Dostaler’s excellent synthesis (2001).
- 17.
- 18.
- 19.
- 20.
It would be more accurate to say that the debate is carefully circumscribed to specialized segments, such as experimental economics, behavioral economics, institutionalist theory, even neuro-economics, etc., without ever developing a collective will to revise all levels of the scientific representation of economics, based on what is discovered in these specialized segments.
- 21.
- 22.
- 23.
See Geoffard's lucid chronicle (2019).
- 24.
“[In the face of genuine uncertainty] Learning, in the form of reacting to perceived consequences, is the dominant mode in which rationality manifests itself.” Herbert Simon (1978, p. 8).
- 25.
It can be shown that incompleteness can paradoxically make cooperation easier, contrary to the whole theory of contracts (Favereau, 1995).
- 26.
See recent work on modeling “creative” rationality by Pascal Lemasson et al. (2017).
- 27.
See n.31 below.
- 28.
- 29.
- 30.
Formally, this implies a change of logic from standard axiomatics: no longer extensional, but intensional (see Favereau (2003). This will be the basis of our critique of Akerlof in the next paragraph.
- 31.
- 32.
For a development, see Favereau (2019, pp. 40–48).
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Favereau, O. (2023). Economics: A Methodological Individualism in Search of Its Own Incompleteness. In: Bulle, N., Di Iorio, F. (eds) The Palgrave Handbook of Methodological Individualism. Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-031-41508-1_21
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