2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85281Two paradoxical aspects of the prevailing kinetic equations are presented. One is related to the usual understanding of distribution function and the other to the usual understanding of the phase space. With help of simple counterexamples and direct analyses, involved paradoxes manifest themselves.9 pages, LatexFluid Dynamicstext