2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35418Recently, Griffiths presented a generalization of the consistent history approach to quantum mechanics. I can easily construct all possible complete families satisfying Griffiths' "noninterference conditions". Since only trivial families exist one may conclude that Griffiths' proposal has not got farther than the ordinary theory of quantum measurement.4 pages, REVTEXGeneral Relativity and Quantum Cosmologytext