2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116825We consider possibilities of modification of Maxwell's equations of electrodynamics that could have automatically led to a massive photon. Why weren't such questions considered at the time when quantum theory was introduced at the beginning of the 20th century? We try to answer this question.8 pages, LatexHistory and Philosophy of Physicstext