Edited sentence: " Luc Ferry adds that the term is trivial by a proof of contradiction: "who would like to be a proponent of an “untenable development.For example, both Jean-Marc Jancovici and the philosopher Luc Ferry express this view.Of course no one.Some criticize the term "sustainable development", stating that the term is too vague.The latter writes about sustainable development: "I know that this term is obligatory, but I find it also absurd, or rather so vague that it says nothing.[..] Everything must be done so that it does not turn into Russian-type administrative planning with ill effects.[..] The term is more charming than meaningful.sustainable development has become obscured by conflicting world views, the expansionist and the ecological, and risks being co-opted by individuals and institutions that perpetuate many aspects of the expansionist model