On November 21, 2023, Professor Detey Co-organized a Round Table in Paris at Maison Suger with the France-Japan Foundation of the EHESS around his book “Do we really know how to speak. The Linguistic contract as a social contract” with key figures in the field of linguistic policies and education, communication, and journalism.
The program of the event was the following one: 
-Introductory remarks by Prof. Sébastien Lechevalier, Director of the EHESS France-Japan Foundation
-Open Lecture by Prof. Sylvain Detey “Do we really know how to speak?”
-Round Table moderated by Dorian Grelier (journalist at Le Figaro) with:
- Alice Antheaume, Director of the School of journalism of Sciences Po Paris
- Monique Atlan, journalist, and essayist
- Bernard Cerquiglini, linguist (U. of Paris), former Rector of the Agence Universitaire de la Francophonie
- Paul de Sinety, Délégué Général à la Langue Française et aux Langues de France (DGLFLF, Ministry of Culture)
- Sylvain Detey, linguist (Waseda University)
- Alice Develey, journalist (Le Figaro)
- Roger-Pol Droit, philosopher, and columnist (former researcher at CNRS)
-Comments by Prof. Jacques Durand, linguist, Emeritus Member of the IUF
-Closing remarks by Christophe Deloire, journalist, Head of Reporters without Borders, General Secretary of Etats généraux de l’information.
Almost 200 people registered for the event online and on-site, and it was included in the Etats généraux de l’information. Part of the event was sponsored by JSPS Kaken (B) n°20H01291 (S. Detey).
