2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224331A semi-classical mechanism which leads to the isotropization of the Mixmaster Universe is developed. A wave function of this Universe, which has a meaningful probabilistic interpretation, is constructed and it describes the evolution of the anisotropies of the Universe with respect to the isotropic scale factor, which plays the external observer-like role. We show that, once large volume regions are investigated, the closed Friedmann-Robertson-Walker configuration is deeply privileged.5 pages, to appear in the Proceedings of the 3rd Stueckelberg Workshop, July 2008, Pescara - ItalyGeneral Relativity and Quantum Cosmologytext