Olivier Rey (IHPST)

The seminar “Change of scale – Change of nature” will welcome

Olivier Rey


Une question de taille

A matter of size



Olivier Rey is a researcher at the CNRS, a mathematician and philosopher, and a member of the Institute of History and Philosophy of Science and Technology (IHPST). He is the author of several essays, including Une question de taille (Stock, 2014) and Quand le monde s’est fait nombre (Stock, 2016).

The research seminar « Change of scale – Change of nature »

The generalist and interdisciplinary seminar “Change of scale – Change of nature” is organized by the CSI and the Eco-anthropology laboratory of the Natural History Museum by Léo MARIANI (MNHN, Eco-anthropology), Julien BLANC (MNHN, Eco-anthropology), Brice LAURENT (CNRS, CSI) and Jean GOIZAUSKAS (Mines Paris, CSI). Postulating that changes in scale (re)condition the nature of things as well as the observations made of them, this seminar intends to raise the issues of measurement and commensurability, of growth and degrowth.

Read more about the seminar and the 2022 program.

Details and registration

Date: March 24, 2022, from 3:00 pm to 5:00 pm

The seminar is open to the public upon registration. If you are interested in attending, please fill out this form.

The session will be held (in French) in a hybrid format at MNHN, 45 rue Buffon, 75005 Paris, room Claude Hélène (nearest entrance at 57 rue Cuvier, close to the Wallabies).

The current protocol requires us to limit attendance at this session to people attached to the institutions organizing the seminar (Ecole des Mines, MNHN).

An invitation link to join the seminar by videoconference will be sent to participants a few hours before the event.

Contact:  Léo Mariani or Jean Goizauskas




Photo source: “Les portraits d’éléments n°2 : Olivier Rey, un penseur de taille“, Revue éléments, 2021