title: Equilibrium: in the balance.
authors.affiliation: Institute of Finance, Université Paris-Dauphine, 75775 Paris, France.
authors.forename: Ivar
authors.initials: I
authors.lastname: Ekeland
mesh_terms: D000818:Animals; D017753:Ecosystem; D020387:Food Chain; D005716:Game Theory; D006801:Humans; D011209:Power, Psychological; D012641:Selection, Genetic; D012942:Social Sciences; D013598:Systems Theory; D013816:Thermodynamics