Jean-Louis Le Moigne. Jean-Louis Le Moigne (; 22 March 1931 – 16 November 2022) was a French specialist in systems theory and constructivist epistemology. He was an alumnus from École Centrale Paris. Le Moigne died in Paris on 16 November 2022, at the age of 91.

Biography
Jean-Louis Le Moigne was born on 22 March 1931 in Casablanca, French Morocco. He is married to Maguy Le Moigne, and they have 3 children.
 ECP (École centrale Paris) Engineer (1955). Diplomas from ITP Harvard Business School and the MIT Sloan School of Management (1970–71).
 Industrial Career 1959–1971: Shell Group France: lubricant development; operational research; Informational Organization; Central Planning; Director of South-West Region, Logistics.
 Professor (1971–1997), later Emeritus Professor of Universities, (systems science, engineering of organizations science, ...), at l'Université d'Aix-Marseille III in Aix-en-Provence, France.
 Co-founder, in 1975, and later director (1988–1997) of GRASCE (Research Group on the Adaptation, the Systems, and the Complexity of the Economy), associated with the CNRS since its origin.
 Since 1997, associated members of this Group henceforth integrated with GREQAM, UMR CNRS Marseilles.
 Member of committees which compiled several international scientific reviews (system, Information, Decision, Organization)

The biography that follows was realized from discussions that Jean-Louis Le Moigne granted during the year 1998 as part of the preparation for the publication of its "Mix" (a collective work realized in his honor, to which important authors contributed — among which are: Herbert Simon, Edgar Morin, Ernst von Glasersfeld, P.  Tabatoni, H. Bartoli — that was published under the title Between Systemic & Complexity: Trailblazing, to the P. U. F. in 1999).

Jean-Louis Le Moigne was born on 22 March 1931 in Casablanca; he is the eldest child of three children.  His father, Emile Le Moigne, had embraced a career in engineering that led him to move to Morocco for a few years to contribute thereby building a hydraulic barrier that made him famous in the area and that was inaugurated after 1940.  Emile was himself the son of a French police officer, of Breton origin and from the countryside, that had benefited from the "social promotion" that was authorized by the institutions of the Third Republic after the war of 1870—and who probably gave the name Emile to his son about Émile Zola. 

Like a lot of military officers' sons, Emile Le Moigne would be schooled in a military secondary school, La Flèche, before entering the Naval school and would serve during the war of 1914–1918 as a young naval officer.  The war caused him some health problems that forced him to return then to civilian life: The army granted him a scholarship to Supélec (engineering school), and it was as an electrical engineer that he was called to contribute to the electric industrialization of Morocco.  

Émile would meet the mother of Jean-Louis, the daughter of an officer, who participated during that time in the construction of the railroads of Morocco. Note to the reader: this maternal grandfather marked the early childhood of Jean-Louis: he was the seventh boy of a family of nine children—that had emigrated from la Creuse (where his father was a mason) towards the Nièvre where there seemed to be more work... –

Bibliography
 Les systèmes d’information dans les organisations, 1973, PUF.
 Les systèmes de décision dans les organisations, 1974, PUF.
 (with D. Carré), Auto-organisation de l’entreprise. 50 propositions pour l’autogestion, 1977, Les Éditions d’Organisation.
 La théorie du système général. Théorie de la modélisation, 1977, PUF. Rééditions en 1986, 1990, 1994 and 2006 accessible as e-book .
 La modélisation des systèmes complexes, 1990, Éd. Dunod. Reedited en 1995.
 Le constructivisme, t. 1 : Les fondements, 1994, Éd. ESF.
 Le constructivisme, t. 2 : Des épistémologies, 1995, Éd. ESF.
 Les épistémologies constructivistes, 1995, PUF, " Que sais-je ? ".
 (avec E. Morin), Comprendre la complexité dans les organisations de soins, 1997, ASPEPS Éd.
 (avec E. Morin), L'Intelligence de la Complexité, 1999, Éd. l'Harmattan.
 Le Constructivisme, t. 1  : Les enracinements, 2002, Éd. l'Harmattan.
 Le Constructivisme, t. 2  : Épistémologie de l’interdisciplinarité, 2003, Éd. l'Harmattan.
 Le Constructivisme, t. 3  : Modéliser pour comprendre, 2003, Éd. l'Harmattan.

See also
 Constructivism (philosophy of science)

References

External links
 "Le Moigne's Defense of Constructivism" by Ernst von Glasersfeld
 "A Principal Exposition of Jean-Louis Le Moigne’s Systemic Theory" by Darek M. Eriksson
 Interview of Jean Louis Le Moigne addressing think tanks issues:  French Observatory of Think Tanks

1931 births
2022 deaths
People from Casablanca
Moroccan emigrants to France
École Centrale Paris alumni
Harvard Business School alumni
MIT Sloan School of Management alumni
20th-century French philosophers
21st-century French philosophers
21st-century French writers
French male writers
French epistemologists