2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93832In this note I expand further on the main assumptions leading to the consistent-amplitude approach to quantum theory and I offer a reply to Jerry Finkelstein's recent comment (quant-ph/9809017) concerning my argument for the linearity of quantum mechanics (Phys. Rev. A57, 1572 (1998)).This contains a reply to a comment by J. Finkelstein (quant-ph/9809017)Quantum Physicstext