2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89975A recent claim (Deutsch and Hayden (2000)), that non-locality can be refuted by considering the evolution of the system in the Heisenberg picture, is denied. What they demonstrated was not the falsity of non-locality but the no-superluminal-signalling principle.Comment on Deutsch and Hayden, Proc. R. Soc. Lond., A456, no.1999, 1579 (2000). 3 pages. LATEXQuantum Physicstext