2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/1815Some points related to the exponential instability of N-body gravitating systems and which are misinterpreted in various papers are clarified. Exponential instability is a phenomenon essentially responsible for the relaxation, evolutionary, morphological and other properties of certain type of galaxies and star clusters.in "The Chaotic Universe", (V.G.Gurzadyan and R.Ruffini, eds.), p.245, World Sci. 2000; the paper by M.Valluri and D.Merritt in the same volume, p.229; astro-ph/9909403Astrophysicstext