2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/154155This talk offers some comments and perspectives on Lorentz and CPT violation.7 pages, presented at the Fourth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, August 2007General Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - Phenomenologytext